62 



The 6th abdominal tergum is not produced to a spine posteriorly in the 

 middle line. 



The tip of the telson is deeply forked in the middle line, the inner edge of 

 the branches being elegantly serrated. 



The eyes are pale brown, and the antennular scale is twisted. 



The external maxillipeds are much stouter than any of the last 8 pairs of 

 legs, and reach beyond the antenna! scale by about a fourth of their terminal 

 joint. 



The first two pairs of legs are like those of P. sivado, except that the 

 posterior border of the carpus of the 1st pair is not produced to a spine. The 

 5th pair of legs are much stouter than the 3rd pair, but are otherwise as in 

 P. sivado. 



Colour in life deep crimson. 



In the largest specimen the median length of the carapace is 25 miHim., of 

 the abdomen 54 millim. 



Bay of Bengal, 922 fathoms: Gulf of Manar 406 fathoms : Arabian Sea, 

 off the Sind coast, 947 fathoms. 



-r> 3 AT 6107 / m ,. ,1 -, 290 335 535 



Eegd. No. -j- (Type of the species) : : -^ : . 



SYMPASIPH/EA, nov. gen. 



Body compressed. Carapace of fair length, produced to form a normal 

 though short rostrum, and furnished with an orbital and a post-antenna! spine. 

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



Byes of fair size, not oblique. 



Mandibles with a slender almost straight palp. The 2nd maxillae have the 

 coxa and basis distinguishable, but extremely small. The 1st maxillipeds have 

 the epipodite quite distinct and the endopodite distinguishable. The 2nd 

 maxillipeds consist of a 7-jointed pediform endopodite, the terminal joint of 

 which is a recurved claw-like dactylus : they have no exopodite, and the epipodite 

 is represented by a tiny papilla. The external maxillipeds differ from those of 

 'fisi^ltaea only in having a small epipodite. 



post The legs only differ from those of Pasiphxn in respect of the 5th pair, 

 largei-h, instead of being nearly as longjas the 3rd pair, arejno longer than those 

 A 3 reduced 4th pair. 



posterior antennules, antennae, and 1st maxillae are as in Paaiphxa. 



