442 Carcinulogical Fauna of India. 



; This genus is really identical with Epigrapsus ( = Nectograpsus), 



'*'-*-^ ^''^)^ fi?Qm which it only differs in having the regions of the carapace even 



more indistinct, the lateral borders of the carapace enti re, the male 



chelipecls remarkably unequal, and the dactylus of the legs alone 



hirsute. 



126. Grapsodes notaUis, Heller. 



Grapsodes notntus, Heller, Novara Criiat. p. 58, pi. v. fig. 2 : Miers, P. Z. S. 1877, 

 p. 136 : J. S. Kingsley, Proc, Ac. Nat. Sci. Philad. 1880, p. 197 : de Man, Notes 

 Leyden Mua. V, 1883, p. 160. 



Carapace five-sixths as long as broad, the regions defined, though 

 faintly, the surface smooth except sometimes for some granules near 

 the lateral borders. The antero-lateral borders are cut into three 

 shallow teeth or lobes behind which are some inconspicuous crenula- 

 tions. On the line of flexion of the front are two eminences separated 

 by a notch. Epistome and pterygostomian regions tomentose. 



Tlie chelipeds differ considei-ably in the sexes, though always 

 smooth. In the adult male they are nearly twice the length of the 

 carapace, the inner angle of the wrist is pronounced but not spiniform, 

 the palm (which is as high as long) has a strong bulge at the infero- 

 posterior angle, the dactylus (which is twice as long as the upper 

 border of the palm) is much longer than the immobile finger and 

 closes very obliquely, and there are two molariform teeth, one near 

 the base of the dactylus, the other nearer the tip of the immobile 

 finger. 



In the female the chelipeds are hardly 1| times the length of the 

 carapace, the inner angle of the wrist is dentiform or spiniform, the 

 palm is not enlarged or inflated, and the fingers are of nearly equal 

 length, meet in the greater part of their extent, and are finely denticu- 

 lated except near the tips. 



The second pair of legs, which are the longest, are about twice the 

 length of the carapace, the third pair are a little shorter than the 

 second, and the first and last pair are about 1^ times the length of the 

 carapace. 



In the Indian Museum are 8 specimens from the Nicobai-s. The 

 carapace of the largest male is 25 millim. long'and 30 millim. broad, 

 but a female is somewhat larger than this. 



That this species is probably terrestrial is evidenced by the vaulted 

 branchial cavities, and also by the folding of the membrane that lines 

 them, which is practically the same as that of Ocypoda, Cardiosoma, and 

 Pelocarcinns. 



784 



