



chambxrun: imuopoDi <>i thi &ustrauam region, LM7 



of pore prosonite marked -w i 1 1 1 i scries of finely beaded striae which curve 

 doraooephalad; metaaonite with striae <>n ventral Burfaoe. 

 Anal tergite caudally rounded, scarcely equalling the valves. Latter 



Sometimes compressed dorsomesally, llic upper incsal border (hen appearing 

 a little elevated. 



Processes of coxae of third to seventh legs strongly compressed antero- 

 caudany, those of the third pair distally most acute, the others being (list all v 

 blunt and rounded. 



The anterior median plate of male gonopods with distal median portion or 

 tongue narrowly subtrajM'ziform, its sides distally more nearly parallel than 

 proximally, the distal corners rounded with margin between them straight. 

 The telopodite of anterior gonopods with main part distally covex, extending a 

 little beyond coxa; mesa] edge thin, the distal process at distal end rounded, 

 on ectal side near middle bearing a small angular process. 



Numl)cr of segments, forty-eight or forty-nine. 



Length, about 42 mm.; width, 3.2 mm. 



614. Plokamostrophus manni, sp. nov. 



Type.— M. C. Z. 4,883; Paratypes.— M. C. Z. 4,884. Solo- 

 mons: Santa Anna (W. M. Mann). 



General color black, a narrow caudal border on each segment obscurely 

 ferruginous above, the stripe widening and becoming more distinct below. 

 Legs ferruginous. In females especially often an obscure longitudinal fer- 

 ruginous line or series of dots on each side of the dorsum. 



Eyes transversely broadly subelliptic; ocelli in four series. Sulcus as 

 usual. Foveolae 2 + 2. 



Collum strongly narrowed dow r n the sides and margined up to level of eyes 

 as usual; not striate. 



Segments constricted or encircled by a furrow deep on the sides and shallow 

 above; the furrow marked dorsally with a series of curved impressed marks 

 and puncta. Metazonites with numerous longitudinal striae - , prozonites 

 with oblique striae present farther dorsad than those of metazonite, attaining 

 very nearly the level of the pores. 



Anal scutum not quite wholly covering the valves, rounded caudally. 

 Valves not margined. 



The usual tarsal pads present in the male. 



Number of segments, forty-seven. 



Length of male, near 33 mm.; width, to 3.2 mm. 



Easily distinguished from the other species here described by the 

 different form of the male gonopods. The anterior median plate has 

 it- distal undivided portion longer, almost equalling the anterior divi- 

 sion of the first gonopods in length, and not triangular in form, being 



