101 



It agrees with the subgenera Plesionilca and Parapandalus in having the 

 posterior lobe of the scaphognathite short broad and rounded off, and in the 

 presence of an exopodite to the external maxillipeds. 



It agrees with the subgenera Pandalus and Plesioniha in having epipodites 

 on the 1st four pairs of thoracic legs. 



The branchial formula is exactly the same as that of Pandalus and not as 

 given by Spence Bate. 



57. Chlorotociis gracilipes, A. M. Edw. 



Chlorotocus gracilipes, A. Milne Edwards, Rec. Fig. Crust, pi. 16: Carus, Prodroin. Faun. Medit., I. p. 474 : 

 Adensamer, Denk. Kais. Akad. Wien, LXV. 1898, p. 623. 



Chlorotocus gracilipes var. andamanensis, Anderson. 



Ann. Mag. Nat. Hist., April 1899, p. 284. 



Rostrum about two-thirds the length of the rest of the carapace, nearly 

 straight and horizontal, serrated both dorsally and ventrally — dorsally through- 

 out, ventrally from in front of the eye : its gastric crest is continued on behind 

 the middle of the carapace, which is otherwise smooth except for a broad, blunt, 

 and very faint epibranchial ridge on either side. The usual orbital and bran- 

 chiostegal spine are present. 



The posterior border of the 3rd abdominal tergum is straight, not convex. 

 The 6th abdominal tergum is only as long as the 5th, and the telson is as long as 

 both combined and very slightly longer than the caudal swimmerets. 



Eye large, globular, without an ocellus. 



The antennular peduncle reaches rather more than halfway along the 

 antennal scale : the antennular flagellum is about as long as the carapace proper. 



The antennal scale is little more than half the length of the carapace : the 

 spine at the far end of the outer border of the 2nd joint of the antennal peduncle 

 is remarkably long. 



The external maxillipeds and 1st pair of legs are setose ; the former, which 

 have a very well developed exopodite, are not stouter than the latter, but exceed 

 them in length by the whole of their long terminal joint, which reaches well 

 beyond the antennal scale. 



The legs of the 2nd pair are a little unequal, one of them not quite reaching 

 to, the other reaching a short way beyond the external maxillipeds : their carpus 

 is divided into two unequal segments, and their chela? are, for a Pandaloid, large, 

 and have the palm longer than the fingers, and the dactylus furnished with a 

 relatively large tooth at its proximal end. 



