9 8 



Postero-lateral margins of carapace keeled and granulate, con- 

 tinued till bases of penultimate pair of legs. Chela (of cf) 

 smooth and naked, movablc finger compressed. Meropodites 

 of walking legs not at all or slightly fringed J's. crassus A. Milne-Edwards 



3. Lateral margins of carapace subparallel in their posterior half. 



Two distinct epigastric lobes behind the front. Chela (of cf) 

 with a small tuft of hairs rilling the gap between the fingers, 



inner surface naked Ps. alètis Stimpson 



Lateral margins of carapace distinctly converging backward 

 in their posterior half. Xo epigastric lobes. Chela (of cf ) with 

 a tuft of hairs at inner surface 4 



4. Antero-lateral teeth of carapace rather distinct, flattened. 



Front not prominent Ps. erythraeus Kossmann x ) 



Antero-lateral teeth of carapace scarcely indicated. Front 



laminar, prominent Ps. laniger n. sp. 



1. Pseudograpsits crassus A Milne-Edwards. 



1868. Pseudograpsits crassus A. Milne-Edwards. Nouv. Arch. Mus. Paris, t. 4, p. 176, pi. 26, 



f. 6—10. 

 1892. Pseudograpsits crassus de Man. Weber's zool. Erg. Reise niederl. Ost-Indien, Bd 2, 



P- 31/- 

 1902. Pseudograpsits crassus de Man. Abhandl. Senckenb. Gesellsch., Bd 25, Heft 3, p. 506. 



Stat. 131. Karakelang, Talaut Islands. 5 cf > 3 9- 



Of this species a sufficiënt description is given by Milne-Edwards, but a few additional 

 remarks may not be superfluous. The carapace is punctate, but the lateral and anterior margins 

 are granulate ; these granules are large and disposed in a single rovv along the sharply-keeled 

 lateral margins, behind the epibranchial teeth, but for the rest they form a narrow stripe of 

 irregularly-arranged and smaller granules ; the anterior border of the front and the supra-orbital 

 borders are much thickened. Infra-orbital border deeply fissured, but the orbit is closed beneath 

 by a long crenulate crest, parting inwardly from the epistome, as in Ps. setosus. The auricle 

 at the external angle of the merus of the external maxillipeds is distinctly present, but does 

 not extend much sideways, the anterior margin has a deep notch in the middle, at the outer 

 part of which the carpus is inserted ; the exognath is somewhat narrower than half the width 

 of the ischium. 



The meropodites of the chelipeds, that are very stout and subequal in the cf, are 

 entirely unarmed, somewhat granulate at the inner margin, near which a deep fissure runs 

 alongside in which long hairs are implanted; the wrist is broader than long in dorsal view, 

 with the inner angle subrectangular and slightly depressed; the palm is very high, longer than 



1) L.c. p. 61, pi. 1, f. 5, pi. 3, f. 14 — 15; Hetcrograpsus erythraeus Ortmann, Denkschv. med.-naturw. Gesellsch. Jena, Bd S, 

 1894, p. 55. 



98 



