55 



guished from I), eballoides (1) by the sharply pentagonal carapace and less-coin- 

 pletely isolated areolae, (2) by the much more prominent front, (3) by the ant(}ro- 

 lateral borders being broken by irregular tubercle-like lobules, and (4) l)y the 

 more abundant sculpture of the abdominal terga : in everything but the form of 

 the meropodites of the chelipeds and first pair of legs it strongly resembles 



Fefalomera. 



— ^ — '—. (Types OP THE si'ECiEs). Off Malabar coast, 28 fathoms. " Investigatoi'." 



Named after Lt.-Col. G. M. J. Griles, I.M.S., who was Surgeon-Naturalist 

 to the Investis:ator from 1884-1888. 



^t) 



Petalomeua, Stimpson 



Pefalomera, Stimpson, Proc. Acad. Nat. Sci. Philad. 1858 (1859), p. 226: Alcoek, J. A. S. B , LXVJII. 

 pt. 2, ]89y, p. 147. 



Closely resembles Crypiodromia, especially those species (e.g. G. rbalioidf's 

 and Gilrsii) in which the carapace is granular and areolated, and indeed only 

 differs from Cri/ptodromia in having the upper border of the meroj^odites of the 

 chelipeds and next, or next two, pair of legs cristiform. 



The sternal grooves of the female are widely separated and end on the 

 posterior part of the sternum corresponding with the 1st pair of (mono- 

 dactylous) ambulatory legs. ' 



The chelipeds carry a small epipodite. 



Distrlhnfiou : Ceylon, Andamans, Japan, N. Australia. 



Pctalomem imika, Alcoek. Plate III., figs. 14, 14(6. 



Fetnlomcra granulata var. indicn, .\Icock, Joarnal Asiatic Soc. Bengal, LWIII., pt. 2, 1899, p. 148. 



Carapace etc. hardly at all hairy : edges of the legs with some hairs. 



Carapace a little longer than broad, convex in both directions, with very 

 numerous unevenly distributed vesiculous granules all the regions are distinct, 

 but are not all equally well defined. The cervical and branchial grooves are 

 both present. 



Front dorsally grooved in the middle line, cut into 3 serrulate teeth, of 

 which the lateral ones are large and triangular, while the middle one is small 

 and is on a much lower plane. 



Upper border of orbit serrulate : a tooth near its middle marks the true 

 inner supra-orbital angle. Outer orbital angle pi-onounced but not dentiform 

 The suborbital lobe forms a granular tubercle or denticle. 



Antero-lateral borders of the carapace cut into 3 granular teeth the first 

 being subhepatic. 



