64 



The external maxillipeds reach about three-fourths 6f the way along the 

 antennal scale : they are stouter than any of the last three pairs of legs, and 

 their 2nd joint (basis-ischium-merus) is somewhat broadened distally. 



The 1st two pairs of legs are similar in form, being much the stoutest and 

 longest of all, the 2nd pair, which are the longer, are about half the length of 

 the body including the rostrum and tail-fan. In the 1st pair there is a spine on 

 the posterior border of the basis and a few spines along the same border of the 

 merus, and the fingers are a little shorter than the palm, the whole hand 

 forming not quite two-fifths the total length of these appendages. In the 2nd 

 pair there is a spine on the posterior border of the basis and a series of spines 

 along the same border of the merus, the posterior border of the carpus is pro- 

 duced distally to a very large spine, and the fingers are hardly as long as the 

 palm, the whole hand forming more than two-fifths the total length of these 

 appendages. 



The 3rd pair of legs are broken in the single specimen. The 4th and 5th 

 pair are nearly alike, their length is about two-fifths that of the carapace proper 

 and their terminal joint is coarse and setose. 



In the single specimen dredged the length of the carapace and rostrum is 

 30 millim. (the rostrum contributing a little over 5 millim.) and of the abdomen 

 45 millim., measured in the middle line. 



From the Arabian Sea, south-west of C. Comorin, 487 fathoms. 



Eegd. No. (Type of the species.) 



PARAPASIKH.KA, S. I. Smith. 



Parapasiphxa, S. I. Smith, Albatross Crust, in Rep. U. S. Fish. Comm. for 1882 (1884), p. 383. 



Body only moderately compressed. Carapace of fair length, produced to 

 form a normal, though short, rostrum : a post-orbital and post-antennal spine 

 may be present. 



Abdominal pleura wide and deep : telson acute, of fair length. 



Eyes of fair size, not oblique : the eye-stalks are vertically compressed and 

 have a small papilla on their inner edge. 



The mandibles have a slender, almost straight, two-jointed palp. In the 

 2nd maxilla? the coxa and basis are small but quite distinct. The 1st maxillipeds 

 have a large epipodite and a small but distinct endopodite. The 2nd maxillipeds 

 consist of a 7-jointed endopodite and a small epipodite : their terminal joint is a 

 spinose dactylus. The external maxillipeds differ from those of Pasiplisea only 

 in having a small epipodite. 



The thoracic legs are as in Pasiplisea, except that the 5th pair are much 

 shorter. 



