360 



CRUSTACEA. 



Length of carapax of a male, eight lines ; breadth, ten lines ; ratio, 

 1 : 1-25; breadth of front, four lines. Male abdomen narrowing much 

 from third segment to penult, and outline in this part very slightly 

 excavate ; penult segment with arcuate sides ; last segment about half 

 as wide as penult, very slightly longer than wide, and broadly rounded 

 at apex. Fifth joint of second pair of legs above, covered, upon apical 

 half at least, with a very short tomentose coat ; tarsus of same pair 

 above tomentose, with either two very narrow naked lines, or none 

 apparent. Fingers denticulate on inner edges. Ciliate crest of third 

 joint of outer maxillipeds is produced backward, so as to reach the 

 outer margin of the second joint, about two-thirds or three-fourths of 

 the way to the base of this joint; third joint nearly naked, longer than 

 broad and hardly shorter than the second. Fifteen or sixteen minute 

 crenatures along the ridge below the orbit. 



The abdomen differs widely from that of the Valparaiso species, in 

 narrowing so much backward, and the orbits are also different in 

 being very imperfect below. The eyes, moreover, are longer. 



Ci/clograjisus Audouinu, Edwards, Crust., ii. 78. 



CrOLOGRAPSUS CINEREUS. 



Carapax parce transversus, non areolcdus, paido nitidus, non granulatus. 

 Orbita infra plerumque circumscripta. Articidus maxiUipfdis externi 

 Btins valde oblongus, 2do non tremor, pubescerts, crista fere ad ungu- 

 ium 2di externo-posterior em product a. Uigiti intus denticulati. Arti- 

 culus pedis 2di htus apice non tomentosus, tarso non spimdoso, linek 

 angustis tomentosis supra ornato. Abdomen maris fere recta/tgulatio/u 

 posticd parce angustius, Icderibiis subparallelis, rectis, segmtnto postico 

 elongate triangidato, triplo angustiore rjuam penidtimum. Sternum 

 pone aream buccalem pubescens. 



Carapax sparingly transverse, not areolate, a little shining, not granu- 

 lous. Orbit mostly complete below. Third joint of outer maxil- 

 lipeds much elongate, not shorter than second, pubescent, crest ex- 

 tending back towards posterior outer angle of second joint. Fiiurers 

 denticulate on inner edges. Fifth joint of second feet not tomen- 

 tose at apex; tarsus not at all spinulous, haying a few narrow 



