KO.1170. TnE FAMILY GOMPHODESMID.E— COOK. 709 



Clypeas slightly concave laterad. the oblique lateral margins nearly 

 straight, meeting the labral margin at a distinct comer: above the 

 labium with two transverse rows of closely set setiferous i>uiictations. 



Labrum nearly- transverse, broken only by the incisions which define 

 the three teeth, the median of which is much the largest and projects 

 beyond the transverse k([<^^ of the labrum. 



Antennae filiform, rather robust, the joints distinctly obconic, the 

 distal densely hirsute with fine hairs; the sixth joint is slightly longer 

 than the fifth and equal to the third, 



Gnathochilarium densely hirsute with short hairs. 



First segment subsymmetrical, except that the iwsterior margin is 

 broadly emarginate medianly; laterad the margins converge evenly to 

 a narrow, rounded corner; the marginal callus very short, about as 

 broad as on other segments, and narrowed abruptly into the distinctly 

 raised edges of the anterior and posterior margins. 



iSegments dor.sally smooth, polished and shining, slightly mgulose on 

 the carinje. 



Lateral carina with distinct raised margins in front and behind; 

 marginal calli very prominent, narrow in front, very broad behind, on 

 middle and posterior segments produced more and more: only on the 

 first few segments are the posterior corners of the carina^ right angles. 



Kepugnatorial \*oTt» facing latero-dorsad, located in rather deep 

 depressions in the middle of the calli, which are there distinctlj' broader 

 than on i>oreless segnjents. 



Below the carina? the segments are rugulose : iK)riferou6 segments have 

 a distinct prominence below the insertion of the carina, doubtless indi- 

 cating the location of the repugnatorial gland. 



Anterior subsegmeiits smooth and shining, the transverse sulcus dis- 

 tinct, crenulate; supplementary margin rather short. 



Penultimate segnient very short; exposed portion equal to about one- 

 quarter of the preceding; carina.' small, rather broad. 



Last segment very short, triangular: apex rather broadly truncate, 

 rather thick. 



Anal valves with margins distinct, but not strongly compressed and 

 not very prominent, somewhat exceeded by the ar>ex of the last seg- 

 ment; surfiaee of valves scarcely convex, rugulose. 



Preanal scale rugulose, subsemicircular; setiferous tubercles distinct, 

 abruptly T>rojecting beyond the posterior margin, but not exceeding the 

 acutely apiculate apex. 



Sterna sparsely hirsute with long hairs on the r>osterior sloi)e, other- 

 wise naked: the posterior of the transverse ridges is more i>rominent 

 except behind segment 15. 



Coxa.' of second legs of male with a rounded conic ventral prominence, 

 the base of which is dark colored, the apex white and apparently fleshy; 

 the seminal aperture lies in the posterior face of this and is surrounded 

 bv a raised lim. 



