Occasional Papers of the Museum of Zoology 33 



depression or pit at level of inner angles of eyes, where it 

 meets a vaguer transverse line from each side. Clypeal foveo- 

 lae 2-|-2. Eyes angled within, separated by about two-thirds 

 their length. Antennae, when laid back on dorsum parallel 

 with median dorsal line, not fully attaining the caudal edge 

 of the dorsum; when laid back along the side a little surpass- 

 ing the caudal margin of collum. 



In the female the lower edge of the collum on each side 

 is nearly straight with the caudal angle widely rounded, the 

 cephalic angle subrectangular, narrowly rounded. (See PI. 

 15, Fig. 99. j In the male the anterior angle of collum is pro- 

 duced, as, c. g., in the male of Xaiiostrcptiis inccrtclincatiis 

 Silv., but more forward, the end of process rounded. (See 

 PI. 15, Fig. 100.) On each side below there are, in addition 

 to the margining sulcus, three complete sulci, with sometimes 

 (in females, at least) one or more less complete intermediate 

 ones. 



Covered portion of prozonites with encircling striolae that 

 branch and anastamose in the ordinary manner. F<xposed por- 

 tion of prozonite and the metazonite svibdensely finely punc- 

 tulate, otherwise smooth and shining above and laterally, the 

 metazonites longitudinally striate beneath. Aletazonites not 

 elevated. Suture sharply impressed throughout, only slightly 

 and widely curving opposite pore, which is widely removed 

 from it, lying approximately on the line between first and 

 second thirds of metazonite. 



Last tergite with a subtriangular caudal region set off by 

 a shallow transverse furrow, the angle rounded ; with no 

 median keel. Anal valves with mesal borders strongly com- 

 pressed and sharply elevated. Anal scale separated from the 

 annulus by a deep sulcus; broadly triangular. (PI. 16. Fig. 104.) 



