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 ^. 



(Ediarthrus Gerst. 

 (Ediarthrus Gerst. Mon. Endom. p. 344. 



CEdiarthrus algoensis, sp. n. 



QE. natalensi similis et affi.nis. Ferrugineus. antennis, 2)cdpis 

 jjedibusqice nigris, tihiis t^ectis. Long. 4" 5 millim. S ■ 



Mas, antenncm'um articido nono am2)liato. 



Hah. Algoa Bay [Brauns). 1 example. 



Rather larger than (E. natcdensis, and difiering 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 CE. natcdensis, but are lai-ger. 



The legs are black and have their tibise straight, which alone is 

 su.fficient to distinguish this species from ffi". natalensis. For 

 some general remarks on the genus I must refer to Ann. & Mag. 

 N. H. ser. 7, vii. p. 402 (IDOf). 



Lycoperdina sericea Gei-st. Mon. Endom. p. 218? 



Hah. Algoa Bay, Cape Colony {Brauns). 



There is a single specimen of a very small Lyco'perdina in 

 Dr. Brauns' collection which T refer to this species with some 

 little doubt. 



8. On the Foetus and Placenta o£ the Spiny Mouse (Acomy.'i 

 cahirinus). By Richard Assheton, M.A., F.Z.S., 

 Lecturer in Biology in the Medicnl School o£ Guy's 

 Hospital, University o£ London. 



[Received May 23, 1905.] 



(Text-figures 41-45.) 



I received from Mr. F. E. Beddard, F.R.S., Prosector to the 

 Zoological Gardens, London, a bottle containing the fcetus and 

 uterus from an individual of the Spiny Mouse {Acomys cahirhms). 

 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 fcetus and 

 placenta (as shown in text-fig. 41), the uterus with Fallopian 

 tubes and ovaiies, and a third object which was a paitially 

 absorbed foetus and placenta. 



The uterus is bicornuate; each horn measures about 18-20 mm., 

 and passes gi-adually into the Fallopian tube, a short, coiled tube 

 lying alongside the ovary (4 mm, x 2 mm,). 



