14 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 123 



Variation: The range in size of all specimens examined is: length 

 3.20-4.22 mm; width 1.57-2.14 mm. 



Male genitalia: The anterior end of the internal sac is illustrated in 

 figure 6. 



Type: Not seen; collected by Champion; Gorham (1888, pi. 4: 

 fig. 19) shows the type in color, but the name is misspelled 

 "redivivus" on the plate. 



Type-locality : Guatemala, Quiche Mountains, 8000 feet. 



Distribution: Known only from Guatemala: the type-locality and 

 Sacatepequez, Finca San Rafael, 7200 ft. 



Triplax sola, new species 



Figure 7 



Diagnostic description: Entire dorsal surface black except for 

 tawny basal three-fourths of elytra; antennae, mouthparts, and legs 

 piceous, rest of the underside black. Body moderately nitidous. 

 Body shape elongate-elliptical, ratio of length to width about 1.95 

 to 1; anterior and posterior ends about equally parabolically rounded, 



Figure 7. — Triplax sola, new 

 species: underside of head. 



widest point at about one-fifth of elytral length behind base; pronotum 

 subtrapezoidal, basal width about seven-tenths greater than apical 

 width. Antennae extending to pronotal base, segment 10 about 

 twice width of segment 8. Apex of epistomofrontal region of head 

 feebly concave. Postmandibular lobes with lateral edges straight 

 (fig. 7) ; terminal segments of maxillary palpi strongly widened, width 

 about 3.5 times length (fig. 7). Pronotal punctures laterally dense 

 and large, medially somewhat finer, with setae that exceed rims; 

 cephalic punctures dense; elytral striae strongly impressed, elytral 

 intervals punctulate; elytra distinctly margined basally. 



Discussion: The specific epithet sola refers to the single specimen 

 examined in this work. 



Male genitalia: Male not known. 



Holotype: Female. Labeled "San Juan del Rio, 10 Mi. E., Quere 

 Taro, Mexico, 30-VII-1954, J. G. Chillcott collector" (DA). Its 

 measurements are: length 4.08 mm; width 2.12 mm. 



Type-locality: San Juan del Rio, Quere Taro, Mexico. 



