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Show 280 MR. R. ASSHETON ON THE FCETUS AND [June 6, yellow, there is no difference in these examples and those from Natal. E n d o m y c h i d a (E d iar th r u s Gerst. (Ediarthrus Gerst. Mon. Endom. p. 344. CEd iar t i ir u s alg o en s is , sp. n. (E. natalensi similis et affinis. Ferrugineus, antennis, palpis pedibusque nigris, tibiis rectis. Long. 4-5 millim. 3 . Mas, antennarum articulo nono ampliato. Hab. Algoa Bay (Brauns). 1 example. Bather larger than CE. natalensis, and differing from it in having the antennae wholly black, with all the joints rather longer and more stoutly built; the ninth joint is triangularly enlarged, as in other species of this genus, in the males; the two terminal joints are formed quite as in (E. natalensis, but are larger. The legs are black and have their tibiae straight, which alone is sufficient to distinguish this species from CE. natalensis. For some general remarks on the genus I must refer to Ann. & Mag. N. H. ser. 7, vii. p. 402 (1901). L yco p e r d in a ser ic e a Gerst. Mon. Endom. p. 218? Hab. Algoa Bay, Cape Colony (Brauns). There is a single specimen of a very small Lycoperdina in Dr. Brauns' collection which I refer to this species with some little doubt. 8. On the Foetus and Placenta of the Spiny Mouse (A cornys ca h ir in u s ). By R i c h a r d A s s h e t o n , M .A ., F.Z.S., Lecturer in Biology in the Medical School of Guy's Hospital, University of London. [Received May 23, 1905.] (Text-figures 41-45.) I received from Mr. F. E. Beddard, F.B.S., Prosectoi to the Zoological Gardens, London, a bottle containing the foetus and uterus from an individual of the Spiny Mouse (Acomys cahirinus). The exact age of the fcetus was not known, but the figure (text-fig. 41) given here shows that it was well advanced. In the bottle were three objects-namely, the foetus and placenta (as shown in text-fig. 41), the uterus with Fallopian tubes and ovaries, and a third object which was a partially absorbed foetus and placenta. The uterus is bicornuate; each horn measures about 18-20 mm., and passes gradually into the Fallopian tube, a short, coiled tube lying alongside the ovary (4 mm. x 2 mm.). |
