24 



same writer points out as a misconception on Stimpson's 

 part, the statement that " the abdomen is but slightly 

 indurated posteriorly." Stimpson's remark appears to apply 

 to the carapace, not the abdomen, but in neither part is it 

 appropriate to the adult animal. In an Indian species Dr. 

 Henderson found the sternal sulci of the female approximate, 

 ending in a double tubercle, but in the female of the type 

 species these sulci are apically separated by a narrow eleva- 

 tion of the sternal surface, which might be called a tubercle, 

 but which certainly lies between the sulci. 



PSEUDODROMIA LATENS, Stimpson. 



1858. Pseudodromiay latcns, Stimpson, Pr. Acad. Nat. Sci. 



Philad., Dec, Prodromus, pt. 7, pp. 64, 78. 

 1888. Pscudodromia, latens, Henderson, Challenger Anomura, 



Reports, v, 27, p. 16, t. i, f. 8. 



The tridentate rostrum would be a conspicuous feature of 

 this species, were it not that the hairy covering is apt to 

 obscure the down-bent central tooth and the upper forward- 

 pointing lateral teeth. The carapace has a smooth surface, 

 more or less coated with a fine down ; there is a depression 

 on each side at the cervical groove, which, as Dr. Henderson 

 points out, receives the fifth joint of the fifth pair of trunk- 

 legs. These, when lying on the back, form a strong genicula- 

 tion between the fourth and fifth joints, and yet with their 

 apices reach the front of the carapace. 



The lobes of the lower lip are oval, with a flattening of the 

 inner margin. The mandibles are elongate, the cutting edge 

 broad, convex, not dentate, the outer surface of the plate 

 convex, the inner thickened at a distance from the front 

 margin, with a strong process rising over the base of the 

 much bent palp. The first maxillae have the inner plate 

 very broad at about the middle, the well fringed margins then 

 converging rather sinuously to a blunt apex carrying about 

 half a dozen horny spines ; the next plate widens to a distal 

 border carrying fourteen horny spines besides others of 

 slighter build ; the outer section has a flask-shaped first 

 joint, surmounted by a bent ligulate second. The second 

 maxillae have the innermost plate broadly oval, with two 

 fringes of long feathered setae, the next plate shorter and 

 much narrower, the third widening distally cleft from near 

 the middle, the outer lobe being the longer and wider ; the 

 outer section is produced into a narrow tongue tipped by one 

 seta ; the flabellum, which has all the free margin closely 

 ft-inged, is narrowly rounded above, broadly and obliquely 

 truncate below. In the first maxillipeds the expanded 



