83 



The antennal scale is more than three-fourths the length of the carapace 

 proper. The spine at the far end of the outer border of the 2nd joint of the 

 antennal peduncle has no fringe of setae. 



The external maxillipeds reach about two-thirds of the way, the 2nd pair 

 of legs hardly a third of the way, the 4th pair of legs nearly to the tip, of the 

 antennal scale. 



Except as regards the palm, the 2nd pair of legs are not slenderer than 

 the 1st. 



The last 8 pairs of legs are slender and the 4th pair are a little longer than 

 the 3rd and a good deal longer than the 5th. In the 3rd and 4th pair the 

 posterior border of the ischium and merus is spinose, and the dactylus is a long 

 and slender joint : in the oth pair the posterior border of the merus is spinose, 

 and the dactylus, though much shorter than those of the 8rd and 4th pairs, is of 

 fair length and not at all hidden in setae. 



In our single specimen, winch was dredged in the Arabian Sea in 890 

 fathoms, the length of the rostrum is 11 millim., of the carapace 14 millim., 

 and of the abdomen 43 millim. 



Colour in life crimson. 



P. n AT 4794 



Regd. No. -y-. 



EPHVRINA, S. I. Smith. 



Ephyrina, S. I. Smith, Proc. U. S. Nat. Mn. VII. 1884 (1885), p. 506, and Report U. 8. Fish. Coram. for 1885 

 (1886) [p. 69]. 



Tropiocaris (part) Spence Bate, Challenger Cruat. JIacrnra, p. 834. 



Body moderately compressed. Rostrum compressed and high, but short. 

 Carapace smooth, not articulating with the abdomen by any special processes : 

 antennular and branchiostegal spines are present, the former being more or less 

 coincident with the orbital angle. 



Abdomen little or not at all can'natcd : the pleura wide : the telson long and 

 acute. 



Antennules and antenna 1 as in Acaiitheplu/i-ti, as also are the exopodites of 

 the thoracic appendages. 



The terminal joint of the 2nd maxillipeds although it articulates obliquely, 

 is a distinct and independent dactylus. External maxillipeds stout, pediform, 

 their 2nd segment (basis-ischium-merus) arched outwards. 



Thoracic legs not elongate, the longest of them being not much longer than 

 the carapace and rostrum combined : some or all of th^m A<nv the isrliixm n.iI 

 'uterus brooil, thin, ami h-a/liki' : the first two pairs end in well formed chelae. 



Abdominal appendages as in Hoplopkonu, 



