Dr. Éva Murai szerk.: Miscellanea Zoologica Hungarica 2. 1984 (Budapest, 1984)
Varga, A.: The Cochlostoma genus (Gastropoda, Prosobranchiata) in Yugoslavia. I. Anatomical studies
of C. septem spirale heydenianum , C. s. bosniense, C. s. riedeli, and C. scalarinum sca- larinum. An interesting version of aphalia was observed in various Cochlostoma species. The penis of some specimens coming from the same population may be reduced. This feature will be described in detail later (see C. scalarinum scalarinum and C. nanum) . My studies revealed that the growth of the penis at its early developmental stage, i. e. , prior to the formation of apertural lip, stops or slows down due to unknown factors. As a result, only very small penis develops. For each population, the large penis will be termed the ' macropenis', whereas the small, reduced penis will be called consequently the 'micropenis*. Cochlostoma septemspirale heydenianum (Clessin 1879) Material: Hrvatska (Croatia), north of Bihac, Pljesevica Mts, in scrub vegetation, 650 m, Ca, coll. A Wiktor, 22.5.1982 (Figs 1-11). Female reproductive system (Fig. 1). Oviduct thin and sinuous. Stipes of bursa copulatrix joining oviduct much below apex of uterus gland. Seminal receptacle positioned from this point at a distance 1.4 times longer than length of stipes of bursa copulatrix (abbreviated as SBC). Seminal receptacle separated quite well from oviduct, length-width ratio 3:1. SBC continueing as a large elongated sac. Uterus gland strongly developed with an opening into mantle cavity near rectum. Male reproductive system (Figs 2-10). Thin sperm duct opening at apex of prostrate, shifted slightly to side. Distal part of prostrate more elongated, clearly distinct from strongly developed thick proximal part. Latter with a narrow opening into mantle cavity close to rectum at posterior end, connected to penis by a short tube. Penis large, strong, inflated a little, tapered abruptly but bluntly. Only macropenile form detected in the sample. Lengthwidth ratios at free section of penis 6:1, 5.4:1, 7:1, 8:1, 4.8:1, and 5.5:1, respectively (mature specimens, Figs 2, 4 and 6 to 9), and 6:1 in immature specimens (Fig. 10). Vas deferens gently undulate inside penis. Remarks on the development of penis as based on Fig. 10 are: spire of full size but lip thin and translucent. Intensive increase of penis and completion of its growth coinciding with completion of lip-thickening. Vastly thickened lip of C. s. heydenianum , a characteristic feature of this subspecies, associated with a modification of mantle. Lateral mantle margin notched, anterior part of mantle protrudes so that head is covered to the eyes (Fig. 11). Cochlostoma septemspirale bosniense (Boettger 1885) Material: I.Bosna, in the Konjuk Mts near Kladnj (north of Sarajevo), moist beechwood, Ca, 650 m, coll. A. Wiktor, 16.6. 1982 (Figs 12 and 22) - II. Bosna, near Olovo in the Zvijezda Mts (north of Sarajevo), on limestone rocks, 800-1000 m, coll. A. Wiktor, 15.6.1982 (Figs 13-18, 24) - III. Bosna, Trebovic Mt in the Jahorina Mts near Sarajevo, 1300-1500 m, Ca, Fagus and Corylus dominated woodland, coll. A. Wiktor, 18. 6. 1982 (Figs 19-21). Female reproductive system (Figs 12-13). Oviduct thin and undulate. SBC joining oviduct much below tip of uterus gland. Seminal receptacle positioned from this point twice as far as length of SBC. Seminal receptacle distinctly separated from thin oviduct only at apex, towards uterus gland this separation less clear. Length-width ratio 7:1. SBC directly continued as a vastly inflated elongated sac. Uterus gland strongly developed, opening into mantle cavity close to rectum. Male reproductive system (Figs 14-24), Sperm duct as in C. s. heydenianum. Distal and proximal parts of prostate less clearly separated than in C. s. heydenianum, but size differences between two sections still existing (Fig. 15). Narrow opening into mantle cavity near rectum at posterior end. Prostrate and penis connected by a tube, which longer than in C. s. heydenianum and more slender. Length-width ratios in the order of Figures 6:1,6.7:1, 7.5:1, 6.6:1, 7.6:1, 7.5:, 7.8:1, respectively in mature specimens (Figs 14, 16-22), and 5.1:1 and 3.1:1 in immature specimens (Figs 23-24). Vas deferens gently undulate or coiled inside penis (Fig. 18). Remarks on the growth of the penis as based on Figs 23 and 24 are: shells with 8 whorls, no lip developed (Fig. 23). Lip thin, intensive growth of penis and lip thickening just as in C. s. heydenianum . Unlike heydenianum, mantle margin of bosniense not protruded.
