A.MPHIPODA. 267 



superiores Jlagello appendicular^ instructs"; but neither does he show any appendage 

 in his figure(which in my copy is accidentally misplaced and numbered as fig. l,p. 5). 

 1 have not been able to find one either in the species to be described or in British 

 specimens of G. coalita (Norman). Della Valle (' Gam. d. Golfo di Napoli/p. 570, 

 Plates 31 and 58) neitber figures nor mentions one. 



Guernea lsevis, Ciievreux.* Plate IV., figs. 26. 



Station LXVI., Cheval Paar, February; Shoal Buoy, Karativo, February. 



Description of female : 



Body tumid. Head longer than the first 2 segments, which are much shorter than 

 the rest, the 5th and 6th being the longest ; first 4 side-plates as deep as the 

 segments. Pleon not much longer than the 3 last segments of the mesosome. Urus 

 rather shorter than the last 2 segments of the pleon, the segments coalesced and 

 carinate, the edge of the carina not denticulate. 



Ocular lobe rather deep, flattened in front, rounded below. Eye large, round ; 

 colour red. 



Upper ahtenine rather longer than the head ; 1st joint twice as long as and much 

 wider than the 2nd ; 3rd about half as long and thick as the 2nd. Flagellum 4-jointed. 



Lower antenna? about as long as the head; 1st joint very short, 2nd longer than 

 the 1st and 3rd united; flagellum very small, about half as long as the 3rd joint. 

 (In the male the 2nd joint is convex below, setose above; the flagellum long and 

 slender, reaching the pleon.) 



Mandibles without palps; these organs were not (dearly distinguished owing to 

 their small size, but they appeal- to be of a more complex structure than is shown by 

 Della Valle in G. coalita. The remaining mouth organs and maxillipeds seem to 

 agree with Della Valle's figures. 



First gnathopods: side-plates oblong, rounded below ; the 1st joint much swollen 

 distally, as long as the 3rd, 4th, and 5th together: 2nd and 3rd subequal ; wrist as 

 long and almost as wide as the hand, with 4 spines on the hind margin ; hand with 

 snl (parallel margins, a few fine setae on the bind margin, palm obliquely truncate, 

 defined by 3 long spines, the margin straight, spinous and setose. Dactylus scarcely 

 as long as the palm, with a secondary tooth; a tuft of long seta? at the base 

 (fig. 26. gn. 1 ). 



Second gnathopods very like the 1st, but rather longer and more slender in all the 

 parts; the 1st joint with 3 long setae on the hind and about 6 short setules on the 

 front margin. 



First and 2nd perseopods : side-plates oblong, rounded below; 1st joint with 

 subparallel margins, about as long as the next 3 ; 4th joint with 4 spines on the bind 

 margin, increasing in length distally. 



* Crust. Anipli. di! S. O. Bretagne,' p. +1 (separate copy), Note. 



2 M 2 



