Dr. Éva Murai szerk.: Miscellanea Zoologica Hungarica 2. 1984 (Budapest, 1984)

Varga, A.: The Cochlostoma genus (Gastropoda, Prosobranchiata) in Yugoslavia. I. Anatomical studies

Male reproductive system (Figs 50-51). Prostate small, divided, opening into mantle cavity near rectum. Prostrate connected to penis with a short tube. Penis short, thick, curved, tapering towards tip. Length-width ratio 5. 1:1. Vas deferens strongly undulate inside penis. Cochlostoma elegáns imoschiense (A.J. Wagner 1906) Material: I. Hrvatska, Starigrad, coll. P. Subai, 17. 6. 1970 (Hung. Nat. Hist. Mus., A. 521). Figs 52-56. - II. Starigrad, Paklenica Nationalpark, coll. L. Pintér, E Subai and A. Szigethy. 5.8.1972 (Hung. Nat. Hist. Mus., A. 825). Fig. 57. Colour difference between sexes as above. Female reproductive system (Fig. 52). Main features identical with those of nominal form. Seminal receptacle appearing as a weakly inflated section of oviduct, so distinction difficult. SBC joining oviduct below apex of prostrate. Seminal receptacle positioned from this point at a distance equal to SBC length. Sac of bursa copulatrix one-sided, A:B ratio 1:4. Male reproductive system (Figs 53-57). Chief characteristics of penis as in nominal form. Figs 53-54 illustrate mature specimens with a length-width ratio of the free section of penis of 5:1 and 4.4:1, respectively. Remarks on the development of penis: Fig. 55: shell with 7 whorls, lip not developed. Under high magnification interesting phases of early development of penis may be observed (Fig. 56 and the associated details). Penis rooted with two radicles below tentacle. Sinistral branch long, dextral branch shorter and with a wide basal area. These two branches bending towards each other, enclosing a funnel-like opening. At meeting point of radicles a slit formed, latter running over penis. This slit is not identical with the penis stria characteristic for the genus Toffolettia Giusti, because in that case the stria corresponds to the vas deferens. In C. e. imoschiense vas deferens runs inside the sinistral branch (see the cross sections and Fig. 57). In Fig. 57 the next step of penis development is seen. Now the two radicles are almost completely fused, being separated only at the basal part of penis. Vas deferens clearly seen in the sinistral branch. On the surface of the penis of an old specimen's traces of the aforementioned slit, shifted to the right, may be recognized. Cochlostoma mostarense (A.J. Wagner 1906) Material: Mostar, above the town, Ca, coll. A. Wiktor, 7. 6.1982 (Figs 58-60). Female reproductive system (Fig. 58), Oviduct thin and sinuous. SBC joining oviduct approximately at tip of uterus gland. Seminal receptacle appearing as slightly inflated section of oviduct, but no clear separation seen. Sac of bursa copulatrix mushroom-shaped with an A:B ratio of about 1:1. Uterus gland strongly developed, opening into mantle cavity at rectum. Male reproductive system (Figs 59-60). Gradual transition between sperm duct and band-like prostrate. Prostrate narrowly opening into mantle cavity close to rectum at posterior end of animal. Prostrate connected to penis through a tube. Penis short, thick, curved, pointed. Length-width ratio of free section of penis 3:1, Vas deferens strongly undulate inside penis. Cochlostoma gracile croaticum (L. Pfeiffer 1871) Material: I. Plitvice, coll. L. Pintér, 1972 (Fig. 61) - II. Hrvatska, Velebit Mts, . northeastern slopes of Voganski Vrh above the village of Sveti Rok, 1300-1550 m, above the timberline, Ca, steep rocky slopes with grassy vegetation, coll. A. Wiktor, 29. 5. 1 982 (Figs 62-65). - III. Hrvatska, Plitvice area, dry hills over the village of Lavinac, north of Gracac, Ca, 700 m, coll. A. Wiktor, 30. 5. 1982 (Figs 66-67). The few Croatian specimens I had a chance to examine yielded only preliminary information on the anatomy of this subspecies. The identification of the gracile complex is often difficult if based on the shells. Female reproductive system (Figs 61-62). Plitvice specimen (Fig. 61): Oviduct thin and undulate. SBC joining oviduct close to apex of uterus gland. Seminal receptacle situated right over this meeting point. Apex of seminal receptacle clearly distinct from oviduct. Length-width ratio 3:1. SBC very short. Sac falling into sections A and B with their ratio being about 1:1. Uterus gland strong, opening with a slit into mantle cavity at rectum.