39 



or two little spines near the middle of their dorsal surface : the wrist has a large 

 spine in the distal half of its upper border : the hand has its outer (upper) edge 

 carinate up to a subterminal denticle, and has its lower edge cut into two or 

 three sharp teeth: the dactylus has its cutting edge faintly and irregularly 

 sinuous, but by no means denticulate, and the opposed edge of the immobile 

 finger is irregularly and rather bluntly jagged. The legs are almost free from 

 hair, a few hairs occurring on the posterior edge of the propodite and dactylus 

 of the third pair and on the last two joints of the rudimentary fourth pair only : 

 in the first and third pairs the carpus is dorsally carinate and the propodite folia- 

 ceously expanded, in the first and second pairs the dactylus is little more than 

 broadly palmulate, and in the third pair the dactylus is foliaceous. The third 

 and fourth abdominal terga are armed each with a median recurved spine, in both 

 sexes. 



The largest female in the Indian Museum collection has the carapace 28"5 

 miUim. long, a smaller ovigerous female has the carapace 26'5 millim. long, 



Wood-Mason established his two species on two specimens, one of which — 

 L. channeri — had suffered a good deal from breakage and imperfect re-growth 

 about the frontal region. 



A considerable series of the specimens since obtained shows that the two 

 supposed species are really one. 



In the Indian Museum collection are numerous specimens, from the Andaman 

 Sea 220 to 271 fms., from the Bay of Bengal 200 to 405 fathoms, from both 

 sides of Ceylon 296 to 406 fms., and from off the Malabar coast, 360 fms. 



Uniform salmon-colour in life, white in spirit. 



Beachtura vera. 



OXYRHYNCHA. 



Family 3Iaiidce. 



Sub-family Inachinse. 



PHYSACHiEUS, Alcock. 

 Phy$ach^us, Alcock, Joarn. As. Soc. Bengal, Vol. LXIV. pt. 2, 1895, p. 174. 



Carapace triangular, inflated (especially in the branchial regions) constricted 

 behind the eyes, ending in a shortish bifid rostrum to the tips of the teeth of 

 which the distal end of the long slender cylindrical basal joint of the antenna 

 of each side is fused. 



Eyestalks short, immovably fixed at right angles to the rostrum, eyes well 

 formed but deficient in pigment. 



Antennules large, folding longitudinally into the respective hollows of the 

 rostral teeth. Antennse longer than the carapace and rostrum combined. 



