// 



as the last throe joints of the pechincle^ its own five joints succes- 

 sively shorter^ all these eight joints with a seta a-piece. the last 

 of them with two setae. 



The lirst and second g^natliopods differ from the following- 

 limbs by having- the fifth joint more prolonged and more strong^ly 

 under-riding- the hand, which is plump and oval, affording a 

 slightly oblique palm for opposition to the short curved finger. 

 The five pairs of perccopo^ls have the wrist or fifth joint very 

 small, the sixth joint somewhat tapering, seemingly with a little 

 notch or spine near the middle of the opposable margin, though 

 these hmbs can scarcely be called subchelate. since the finger is 

 straight^ except at the extreme apex. In all the trunk limbs the 

 long second joint is attached to a pectinate coxal plate, which is 

 prominent in a ventral view of the animal- 



Pleopods. The peduncle is short but broad, its outer part form- 

 ing a narrow apex, to which the outer ramus is attached ; its 

 inner margin, at least in the lirst pair, carries two apically bent 

 spines; the inner ramus is rather the broader, and has its distal 

 margin armed with five long plumose setse; the outer ramus has- 

 four such setas and a spine or simple seta on the outer angle- 



The uropods have a peduncle as long- as broad, and as long as- 

 the inner ramus; the latter has a seta at the middle of its inner 

 margin and four setse on the apex ; the outer ramus, which i?- 

 rather shorter and narrower, has also four on the apex. 



The ovigerous female, with eggs not far advanced, was 8 mm. 

 long by 7 mm- broad ; the larval form was 2.5 mm. in length, and 

 rather less than three times as long as broad. There were three 

 larvae in the same Ostracode with the developed female above 

 described, and wdth a well developed egg of the host, CrossopJiorus 

 africanus- In another female of the same Ostracode a single 

 larva of the parasite occurred. 



CRUSTACEA ENTOMOSTRACA. 



OSTRACODA. 



Myodocopa. 

 Fam.: Cvi'Kidinidae 



1896. Cypridinidac, Brady and Norman, Trans. Royal Dublin 



Soc ser- 2, vol. 5. p. 638- 

 lyoo. Cypridinidac, Stebbing, Willey's Zoological Results, Part 

 '5, p. 662. , . , , 



Further references arc given in the last-mentioned work. 



Gen-: Ckossopiiokus, Brady. 



1S80. Crossophonis. Brad}-- Challenger Ostracoda, Rejjorts. vol- 

 I. p. 157. 



