THE COPENHAGEN MUSEUM AND OTHER SOUECES. 31 



lip broader tlian deep, slightly bilobed. Lower lij) with the front lobes wide apart, not 

 larger than the hind lobes, and snrmonnted with a single spinule at the outer corner. 

 Mandililes a slightly sinnous oblong in shape, with straight smooth cutting-edge ; a 

 tooth-like accessory plate on tbe left * mandible. First maxilla? with inner plate rather 

 large, bordered with 7-11 long plumose setae ; outer plate moderately broad, carrying nine 

 slender spines and a tuft of setules ; the palp one-jointed, nearly reaching the end of the 

 outer plate, tipped with seven setae or slender spines. Second maxillae with inner plate 

 very broad, with a fringe of 18 or 19 setae, most of them plumose ; the outer jilate shorter 

 and greatly narrower, tipped with nine setae. Maxillipeds with inner plates very broad, 

 the apical margin sloping outward, with three little spine-teeth; the outer plates not 

 nearly reaching the end of the palp's second joint, fringed with 13 spine-teeth on the 

 inner margin ; the joints of the palp successively diminishing in size, the third and fourth 

 slender and small. Appendages of the perteon nearly as in Andania. Uropods with the 

 peduncles robust, much longer than the rami; both peduncles and rami successively 

 diminishing. In the male, outer ranuis of first pair thick, curved, smooth, inner rather 

 shorter, straight, slender, each with two marginal spinules ; rami of second pair slender, 

 smooth, subequal ; rami of third pair minute, the outer nearly twice as long as the inner, 

 with a tiny second joint. In the female all the rami slender ; those of the third pair- not 

 minute, subequal, nearly as long as the peduncles. Telson broadly oval, but ending 

 almost acutely, cleft nearly to the middle, but without any dehiscence, shorter than the 

 peduncles of the tliird uropods. 



Andaniotes corptjlentus (Thomson). (Plate 8.) 



1882. Anonyx corpulentus G. M. Thomson, Trans. New Zealand Institute, vol. xiv. p. 231, pi. 17. 



figs. 1 a-f. 

 1888. Andania abijssorum Stabbing ' Challenger ' Amphipoda, p. 739, pi. 37. 

 1893. Stegocephalus abyssorum Delia Valle, Gammaiini, p. 629, pi. 59. fig. 38. 



Head vdth lateral angles rounded and below them produced downward in long straight 

 triangular lobes hidden under the first side-plates, below which the mouth-organs of the 

 down-bent head are visible. Third pleon-segment with the postero-lateral angles 

 narrowly rounded, the dorsal line distally bent abruptly downward, having (in the male) 

 two little eminences below the bend, the distal margin somewhat squared ; the fourth 

 segment dorsally convex ; the fifth depressed ; the sixth long, dorsally convex, forming two 

 longitudinal eminences, between which the telson is concealed in a lateral view. 



First antenncp. The third joint of the pedimcle is transversely oval ; the first joint of 

 the flagellum carries transparent filaments ; the setiform spine at the apex of the accessory 

 flagellum is longer than the joint. 



Second antenme. The flagellum is eight-jointed. 



First (inathopods. The side-plates are roughly triangular. The second joint is long 

 and broad, stronger in the male than in the female ; the third joint longer than broad ; 

 the fifth joint in the male longer and much wider, in the female wider but only little 



* Not on the right, as stated in tlie ' Challenger " Arnphipoda, p. 739. 



