1908.] Records of the Indian Museum. 217 



margin is divided into three or four small obtuse teeth and the 

 arcuate, inner part appears somewhat uneven ; the outer part of 

 the margin carries a small, rounded notch not far from the outer 

 orbital angle, and appears for the rest entire. Between the crenulate 

 anterior margin of the buccal cavity and the arcuate, inner part 

 of the infraorbital margin one observes a small, obtuse, dentiform 

 lobe, at some distance from the anterolateral angle of the buccal 

 cavity ; in Pack, minutus this lobe is broader, transverse, almost 

 contiguous to the antero-lateral angle of the buccal cavit}^ and 

 nearly in a line with the anterior margin of the latter. Subhepatic 

 and subbranchial regions smooth, though pubescent. lyobe or tooth 

 near the arcuate, inner part of the orbital margin triangular, sub- 

 acute, separated by a rather broad hiatus from the front. 



External maxillipeds (fig. 2a) as in Pack, minutus, a male 

 specimen of which from the Bay of Batavia is lying before me ; in- 

 ner margin of the ischium straight (in Pack. IcBvis, Borr., concave), 

 merus slightly broader than long, little shorter than the ischium, its 

 inner angle obtuse, less produced than in Pack. IcBvis. Terminal 

 segment (fig. 2h) of the male abdomen obtuse, almost as long as 

 broad at base and distinctly longer than the penultimate segment ; 

 sternum and abdomen smooth. 



Outer and inner sides of the merus of the right chelipede (the 

 left is wanting in both specimens) furnished with transverse, squami- 

 form, pubescent ridges, lower margin denticulate and with a sharp 

 spine at the far end ; anterior margin with a large, acute spine 

 distalh^ followed on the distal margin by two smaller ones and 

 preceded by three or four very small, acute teeth. Tapper surface 

 of the carpus with transverse and oblique ridges and with a small 

 acute spine at the inner angle. Chela (fig. 2c) less convex than 

 in Pach. minutus, upper margin of the palm with finel^^ granular, 

 oblique ridges, outer surface very finely granular, the granules 

 only visible through a lens ; a strong longitudinal ridge runs from near 

 the tip of the immobile finger until near the carpal articulation; 

 lower side of the palm with oblique markings and ridges. Fingers a 

 little shorter than the palm, dactylus granular above and at its 

 base, outer side of the fingers and lower margin of the index smooth ; 

 tips of the fingers spoon-like, glabrous. 



Ambulator3'- legs (fig. 2) slenderer than those of Pack, minutus. 

 Meri with transverse ridges on their outer surface and with an acute 

 tooth above ; the meri of the first pair are armed with two strong 

 spines at the far end of their lower margin, those of the two middle 

 legs with three and those of the last pair also with two, but on the 

 three posterior legs these teeth are smaller than the two spines 

 with which the lower margin of the m.eri of the ist pair is armed. 

 The three last joints are bristly and the dactyli, which are slightly 

 curved at the acuminate tips, are but little shorter than the 

 propodites. 



Pachygrapsus IcBvis, Borr., from Funafuti {Proc. Zool. Soc, 

 1900, p. 592, pi. xlii, fig. 7) is no doubt different. Of the single 

 female on which this species was founded, the distance between the 



