TRIPLAX AND HAEMATOCHITON — JOHNSON 



13 



and posterior ends about equally parabolically rounded, ratio of length 

 to width about 1.95 to 1. Antennal club 4-segmented, setal vestiture 

 moderate, width of segment 10 about 2.6 times that of segment 7. 

 Apex of the epistomofrontal region of the head essentially straight. 

 Lateral edges of postmandibular lobes posteriorly divergent (fig. 5), 

 overall shape close to that of T. californica; terminal segments of 



Figure 5. — Triplax rediviva Got- 

 ham: underside of head. 



Figure 6. — Triplax rediviva Gor- 

 ham: anterior end of internal 

 sac, anterodorsal view. 



maxillary palpi moderately widened, their width about 2.75 times their 

 length (fig. 5); men turn small. Pronotal punctures coarse and deep; 

 head punctures somewhat coarse, not evenly arranged; elytral 

 striae impressed, elytral interval punctures present; presternum 

 covered with exceptionally large and deep punctures; pronotum 

 covered with finer punctures; metasternum with large punctures 

 laterally but not so sharply incised as on the prosternum, a single 

 long seta projecting from each metasternal puncture. 



