NO. 1170. THE FA MIL Y G OMPHODESMID^S—COOK. 691 



Segments dorsally distinctly rugulose coriaceous, evenly convex and 

 strongly arched. 



Lateral carina? narrow, less than one-fifth the body cavity, inserted 

 about the middle line of side; dorsal surface decnrved nearly in the 

 direction of the dorsal arch, only the very large marginal calli project- 

 ing laterad; the calli about twice as thick on poriferous segments; 

 anterior edge distinctly margined, the posterior very indistinctly; pos- 

 terior corners scarcely produced except upon i^osterior segments; 

 dorsal surface very distinctly rugulose. 



Repugnatorial pores facing nearly laterad, surrounded by a fine 

 raised rim and located in a large depression near the middle of the 

 callus, which is distinctly widened opposite the pore. 



Below the carina' the segments are distinctly and finely rugulose; 

 above the base of the leg a small carina. 



Anterior snbsegments distinctly, though finely, granular rugulose, 

 the transverse constriction distinct and rather long, distinctly and 

 irregularly creiiulate; supplementary margin rather short. 



Penultimate segment short, its cariuai short, broadly conic, included 

 between the carinie of segment 18, which are also unusually short and 

 broad. 



Last segment short, broadly triangular, narrowly and distinctly 

 truncate. 



Anal valves slightly rugulose vertically, the margins distinct, dis- 

 tinctly compressed and moderately prominent. 



Preanal scale faintly rugulose, broadly triangular, slightly apiculate, 

 the setiferous tubercles small, distinct, slightly projecting, not equaling 

 the ajiex. 



Sterna sparsely hirsute, the middle and anterior more densely so, and 

 with longer hairs; no transverse ridges; the sterna are flat and plane 

 in the middle and slightly raised at the bases of the legs; on middle 

 and posterior segments the posterior edge of the sterna is broadly pro- 

 duced and rounded caudad, and the posterior part turned slightly 

 ventrad, apparently so as not to interfere with coiling in a spiral. 



Coxii' of second pair of legs of male prominent ventrad, the projec- 

 tion thick and rounded. 



Process of segment 6 with a few very long hairs on the posterior face 

 and ventral margin; the broad and rounded lobes are not entirely sym- 

 metrical, being a little more prominent laterad than in the middle of 

 the distal margin. 



Seventh segment with rim of copulatory aperture projecting on the 

 sides, deeply cut away behind. 



Legs of male moderately robust and hirsute, scarcely tuberculate; 

 fleshy sole of anterior pairs moderately developed. 



Copulatory legs (Plate LVI, figs, \a-lc). 



Color of alcoholic specimens uniform dark brown, possibly stained 

 from large Spirostrei)ti in the same bottle. 



