STALK-EYED CRUSTACEA 159 



and have three spines, without counting the one forming 

 the orbital angle. 



The walking legs are long and thin, with a row of 

 sharp spines on the upper surface. 



Range. — Barbados ; in deep water. 



5. Pilumnus lacteus. 



PUiunnus lacteus . . Stimpson, A. Milne Edwards, 



Miers. 



Resembles Pilummts geinmatus, except that the 

 carapace is much wider and almost flat transversely. 

 The regions are well marked in front, but completely 

 smooth. The frontal lobes are slightly advanced. 



The antero-lateral teeth are spiniform ; there is no 

 subhepatic tubercles or spines. 



Range. — West Indies, Cuba; in deep water, 



6. Pilumnus quoyi. 



Pihimmis quoyi . . A. Milne Edwards, Miers, H. 



Milne Edwards, 



The carapace strongly convex, and covered, as well as 

 the legs, with short hairs, regularly arranged and not 

 hiding completely the test ; on the legs there are some 

 longer hairs. The regions are distinctly marked, but their 

 surface has no spines, tubercles, or granulations. The 

 front is formed of two sloping lobes, with rounded and 

 granular edge. The superior orbital border is unarmed, 

 the inferior border is granular. There are, independently 

 of the postorbital spine thin strong spines on each antero- 

 lateral border, and in front of these, another shorter sub- 

 hepatic spine. The pterygostomian regions are granular. 

 The legs of the first pair, very strong, are of unequal 



