REPORT ON THE BRACHYURA. 
45 
136° 5' 0" E. (adult male, having lost nearly all the legs). Station 212, Celebes Sea, 
10 fathoms ; lat. C 54' 0" N., long. 122° 18' 0" E. (adult males and females). 
The males are small or imperfect, 
following dimensions : — 
An adult female (Station 212) 
presents 
Adult ?. 
Lines. 
Millims. 
Length of carapace and rostrum, nearly 
11 
22-5 
Breadth of carapace, nearly 
9 
18-5 
Length of a chelipede, 
16* 
35 
Length of first ambulatory leg, 
61* 
130-5 
The specimen dredged in the Arafura Sea (Station 190) differs slightly in its some- 
what shorter and broader rostrum. 
Chorilibinia, Lockington. 
Chorilibinia, Lockington, Proc. Calif. Acad. Nat. Sci., voL vii. p. 69, 1876. 
„ Miers, Journ. Linn. Soc. Lond. (Zool.), vol. xiv. p. 654, 1879. 
The generic diagnosis of Lockington is in few words, and is as follows : — “ Rostrum 
long, broad, and emarginate at tip as in Libinia, but the eyes concealed beneath it as in 
Chorinus and its allies. Prse- and postorbital teeth acute, separated above and below 
by an acute fissure, and together constituting the orbit. Carapace triangular.” 
The description which follows is taken partly from Mr. Lockington’s specific description, 
partly from the Australian species, Chorilibinia gracilipes, wdrich I have referred to this 
genus. 
Carapace subpyriform, rounded behind, and spinose on the dorsal surface ; orbit 
divided by a hiatus or fissure above and below, upper orbital margin prominent, the 
supraocular lobe terminates usually, but not invariably, in a tooth or spine. Rostrum 
well developed, with its spines coalescent at base, and separated and divergent in their 
distal half or third. Post-abdomen (in the male) in Chorilibinia gracilipes, seven- 
jointed. Eyes (in Chorilibinia gracilipes ) small, retractile. Basal antennal joint some- 
what dilated, with a spine at the extero-distal angle, and (in Chorilibinia gracilipes) on the 
outer margin at the base ; merus of the exterior maxillipedes (in Chorilibinia gracilipes) 
distally truncated, and considerably produced and rounded at the antero-external angle, 
emarginate at the antero-internal angle, where the next joint articulates with it. 
Chelipedes (in the male) small, palm slender, fingers small, in contact through the greater 
part of their length. Ambulatory legs subcylindrical, slender, elongated, the anterior 
pair (or second pair in Chorilibinia angusta V) much the longest ; dactyli nearly straight, 
acute. 
Of the two described species of this genus, one, Chorilibinia angusta, Lockington, 
inhabits the Gulf of California (depth not stated) ; the other, Chorilibinia gracilipes, Miers, 
