The 6th abdominal tergum alone is carinate : the 6th abdominal somite is 

 twice as long as the -5th. The telson is not much more than half the length of 

 the endopodite of the caudal swimmeret. 



Eyes deficient in pigment, not broader than the stalk, having a speck of 

 black pigment near their base : the tubercle of the eyestalk is acute and very 

 large. 



The antennular flagella are long, the upper one is thickened at base. The 

 antennal scale barely surpasses the antennular peduncle. 



The dactylus of the external maxillipeds is short and broad and compressed, 

 being narrowest at its basal end. 



The exopodites of the 1st abdominal appendages are not as long as the 

 carapace: between the bases of the 1st abdominal appendages is an acute 

 tubercle, most prominent in the male. 



The " thelycum " consists of a horizontal subtriangular plate or tubercle, 

 placed between the 3rd pair of legs, followed by two transverse bars between the 

 4th and 5th pairs. The first of these bars is somewhat W slia P ecl > with the 

 posterior notch of the W filled by a toot ^ m tne middle of the anterior border 

 of the 2nd bar. 



The " andricum " consists of a pair of large leaves which are a good deal 

 pleated longitudinally and a good deal fimbriated distally. 



Colour in life deep crimson. 



In one of our larger specimens the carapace and rostrum are 10 millim. 

 long, and the abdomen is 25 millim., measured in the mid-dorsal line. 



Bay of Bengal, 764, 922, 1260 fathoms : Arabian Sea, near and north of the 

 Laccadives 738, 764, 865-880, 891, 931 and 1043 fathoms. 



„ , T 530-531 538 G142-6143 64,77 9208 311 371 , 526 _ 531 



Regd. iNos. — — : -y : — 9 : "TT : "9" : To ' "10 • To • 10 ' 



Family ScvgestUUe, Dana. 



Dana, U. S. Expl. Exped. Crust, pt. 1. p. 601 : Spence Bate, Challenger Crust. Macrura, p. 345: Stebbing, 

 Hist. Crust., p. 221 : Ortmann in Bronn's Thier Reich, Arthropods, p. 1121 : Hansen, P. Z. S. 1896. 



Rostrum very small or absent : ophthalmic somite usually much exposed. 



Epipodite of 2nd maxillipeds small. Exopodites are absent from all the 

 thoracic appendages behind the 1st maxillipeds. 



The first pair of legs are non-chelate : the 4th and 5th pair are short, with 

 the number of segments reduced— sometimes they are rudimentary or altogether 

 wanting. 



Branchiae few— never more than 8 on either side— sometimes wanting 



altogether. 



