78 



THE VOYAGE OF H.M.S. CHALLENGER. 



des pates-machoires tres-renfl6, et premier article du thorax extremement aEong6. Pates 

 environ cinq fois aussi longues que le corps, sans crochets accessoires au bout. Pates 

 accessoires de la femelle de dix articles." However, as in this description the very- 

 distinct spines on the legs have not been mentioned, which, if present, would certainly 

 have been seen by Milne-Edwards, I think it probable that his Pallene chiragra is a 

 nearly allied but distinct species. Jarvis Bay, New Holland, where Mibie-Edwards's 

 species was collected, is not far from Station 163. 



Pallene Icevis, n. sp. (PI. XL figs. 8-12). 



Diagnosis, — Body robust, lateral processes scarcely separated. Body and legs smooth. 

 Proboscis short, conical ; inserted about the front of the cephalothoracic segment. Ovi- 

 gerous legs with denticulate spines and a long claw. Legs without auxiliary claws. 



Description. — 



Length of the proboscis, 

 Length of the trunk, 

 Length of the abdomen. 

 Total length of the body, 

 Length of the ovigerous leg. 

 Length of the leg of the third pair, 



The body of this species is robust. The cephalothoracic segment is of a curious 

 shape : it is considerably swollen at the front, where it bears the proboscis and the 

 mandibles ; it is constricted in the middle, thus forming a sort of short neck, and it is 

 much wider again at the back, where it bears dorsally the oculiferous tubercle, and 

 ventrally the short lateral processes for the insertion of the ovigerous legs. The 

 ocuhferous tubercle, with two larger eyes directed forwards and two smaller ones back- 

 wards, is situated almost exactly above the insertion of the ovigerous legs. The 

 lateral processes for the insertion of the legs are comparatively long ; the abdomen is 

 short and stout. 



The proboscis is short and conical, and has a very small mouth at the extremity. The 

 mandibles are rather stout. The basal joint is constricted at the base, and indistinctly 

 divided into two joints, it is nearly as long as the proboscis ; the second joint is placed at 

 right angles with the basal joint, and is considerably swollen and stout. At the 

 extremity it is furnished with two claws, one straight, pointed and immovable, the other 

 curved and movable, but also pointed. The inner surface of these claws is smooth, but 

 there is a blunt point in the middle of the movable claw. 



The ovigerous legs of the female specimen (the only one dredged) are not very 

 strong. The first three joints are small, the fourth and the fifth are the longest, nearly 

 of the same length and a little curved. The sixth joint is not quite half as long as the 

 fifth. The four last joints are but little shorter than the sixth. This claw is compar- 



