21 a 



c 



The antennular peduncle is more than half the length of the carapace, the 

 3rd joint being the longest and the basal joint the shortest : the upper flagellum, 

 which tapers to a setaceous filament, is nearly as long as the peduncle, the lower 

 is, in the female, a short fine filament. 



The antennal peduncle exceeds the eye by nearly as much as it falls short 

 of the antennular peduncle : the finely serrated acicle reaches a little beyond the 

 eye : the flagellum is over half the length of the body. 



The large chelipeds, which are equal to one another and quite symmetrical, 

 are about as long as the abdomen : their upper surface is setose, especially on 

 the hand : their ischium and merus are elegantly toothed along the inner edge, 

 where they meet their fellows, across the mouth parts, in a perfectly straight 

 line : their hand, which is subcylindrical, is about twice the greatest length of 

 the carpus : the fingers, which are a little more than half the length of the palm, 

 have hard horny tips. 



The 2nd and 3rd thoracic legs are a little longer than the chelipeds : their 

 joints are smooth and compressed, with sparsely setose edges, and though the 

 dactylus is a long joint it is only about half the length of the propodite. 



The 4th and 5th legs (coxal joint included) are only about half as long as 

 the carapace : both are subchelate and have a short broad propodite and a tiny 

 claw-like dactylus, the propodite having a pavement-like patch of setose granules 

 on its outer surface. 



In the female the appendages of the 1st abdominal somite are uniramous, 

 those of all the other somites are biramous : in the male the abdominal append- 

 ages 1-5 are all uniramous. 



Colour in life, dull chalky red. 



The female, is 28 millim. long, the carapace being 9 millim., the male is 

 larger. 



Andaman Sea, 4)05 fathoms. 



— and — (Types of the species). 



Family Pagiiriclce, Dana. 



Dana, U.S. Expl. Exp. Crust, pt. i. p. 435 : Ortmann in Bronn's Thier Reich, Halacostraca, p. 1145. 



Body sometimes straight and symmetrical, but the abdomen is more usually 

 asymmetrical and coiled in a spiral : the abdominal terga are never all broad 

 well calcified plates in close contact one with another, but the abdomen is 

 generally soft and has its segmentation more or less obscured. Rostrum wanting 

 or quite inconspicuous. 



Ophthalmic somite more or less exposed. Antennal acicle well developed. 



