630 PROCEEDINGS OF TEE NATIONAL MUSEUM. vol.40. 



Anterior subsegments covered with a rather regular minute reticu- 

 lation of raised lines; separated from the posterior subsegment by a 

 very deep, abrupt, and distinctly beaded transverse constriction. 

 Reticulation interrupted a little in front of the constriction by a deli- 

 cate transverse impressed line. 



Pleurae roughened with scattered granules, thickened below into an 

 oblique ridge, sharply angled behind, especially on anterior segments. 



Penultimate segment scarcely shortened, but the carinae distinctly 

 smaller and less acutely produced; not transversely impressed like the 

 preceding segments, but with a pair of bristles on the posterior part of 

 the segment in addition to the six anterior bristles. 



Last segment nearly twice as long as the exposed part of the penulti- 

 mate, the projecting apex rather large, about as long as broad, ending 

 in a pair of prominent rounded, nonsetiferous tubercles separated by aj 

 distinct notch with two pairs of setiferous punctations. A trans- 

 verse row of four bristles in front of the apex, one pair dorsal, the 

 other lateral, another transverse row of eight bristles near the middle 

 of the segment, two pairs dorsal and two pairs lateral, near the upper 

 corners of the anal valves. 



Anal valves rather flat, but distinctly convex in the middle, with 

 distinctly compressed raised margins; two setiferous tubercles dis- 

 tinct from the margins. Preanal scale nearly as long as broad,; 

 convex, distinctly angled by the prominent setiferous tubercles thai 

 equal or exceed the scarcely produced apex. 



Sterna smooth, rather sparsely hirsute, with a distinct but grad- 

 ually sloping cruciform impression; a small broadly conic tubercle or 

 spine at the base of each leg, directed caudad. Spiracles with large 

 ear-like expanded rims on the outer side, especially the anterior pailS 

 of each segment. Coalesced pleurae of second segment of male with a 

 median process in front and behind; those of the third segment of I Ik: 

 female with a median process in front. 



Legs of moderate length, rather robust; joints 3 and 6 the longesq 

 subequal, all the joints moderately hirsute, at least on the ventral 

 surface; joints 5 and 6 also tuberculate on the ventral surface in the 

 male, but not provided with cushions of dense hairs. Seminal ducts 

 opening in small pores on the rounded mesial corners of th-3 basal 

 joints of the second pair of legs. 



Gonopods rather short, accommodated by a slight excavation between 

 the bases of the seventh pair of legs; aperture without a raised rim; 

 basal joint prominent; apical joint with a very short, cushion-like 

 hirsute base, a robust, obconic slightly curved shaft, and four terminal 

 curved prongs, a short one projecting mesad, and two much larger 

 projecting distad, but strongly incurved and decurved; the shorter of 

 the two rises from a slender base and expands into a thin oblique, 

 triangular decurved blade; the longer prong rises from a rather broad, 



