Moesz Gusztáv - Soós Lajos (szerk.): A Magyar Természettudományi Múzeum évkönyve 28. (Budapest 1934)

Hungerford, H. B. ; Evans, N. E.: The Hydrometridae of the Hungarian National Museum and other studies in the family. (Hemiptera)

Metanotum: I he hemelytra are fully developed extending nearly to anterior margin of sixth abdominal segment. C o x a e : The distance between the first and second coxae is to that between the second and third coxae as 32:58; acetabular pitting as in H. transuaalensis sp. n. Femora: The anterior femora attain the apex of the liead and the posterior femora attain the tip of the abdomen. A b d o m e n : The posterior half of the sixth abdominal segment is swollen and provided with a pair of small brushes of stiff hairs as in H. transvaalensis; the seventh segment (first genital) is provided with a ventral keel throughout its length; there is a pair of conspicuous tufts of hair on the first genital much as in H. albolineolata REUTER (now gone from the type); the firsf genital as seen from above is broadest near the middle with dorso-lateral depressions on the caudal half; the terminal process is stout and sharp. about one-fourth the length of the segment; in the female the genital segment is declevent and the process less than a third the length of the segment and pointed. Described from holotype and allotype labeled „Afrique or. Allemande, Tanga, Alluaud and Jeannel Avril 1912". There are also two females labeled „Tanganyika Territory 15. 1. 1918. Loveridge" which were labeled 11. ambulator STAL in the British Museum. The holotype and allotype belong to the Paris Museum. Hydrometra ambulator STAL, 1855. (Plate II). Hydrometra ambulator STAL, Ofvers. Vetenskaps-Akad. Forhandl. XII. 1845—55, nr. 1. p. 46. Doctor STAL described this species most inadequately. His type which we have seen in Stockholm is labeled „Cafraria. J. Wahlb." At the close of his very brief latin description he wrote „In terra Natalensi". We have found four closely related species from Africa and in our studies have appealed to Mr A. ROMAN of the Stockholm Museum who has been kind enough to make two examinations of the type concerning points overlooked in our own examination of the type. The specimens from which our drawings were made are from Cape Province, South Africa. The distinguishing features of this species are given in the key. The acetabula pits were difficult to see on the type and on the dark specimens before us. The Cape Province specimens show some lack of symmetry in this regard. One male has 2 pits in front and 3 pits behind the cleft on both anterior and