28 PROCEEDINGS OF THE NATIONAL MUSEUM vol. ii4 



fourth, and fifth intervals forming two irregular rows. Pygidium 

 convex near apex, surface finely alutaceous with scattered poorly 

 defined punctui-es usually bearing minute setae. Underside of thorax 

 with coarse punctures laterally, the punctures bearing moderately long 

 reddish setae; impunctate or with very fine jDunctures medially. 

 Abdominal segments bearing scattered punctures laterally, last seg- 

 ment moderately emarginate medially. Foreleg scarcely longer than 

 in female, not slender or bent in anterior third; four teeth of the tibia 

 broad and stubby; tibial margin only serrate or finely denticulate 

 above the last tooth, not serrate on or between the teeth. Ventral 

 surfaces of femora with a few widely scattered coarse punctures and 

 v/ith more numerous but still scattered, fine punctures. 



Male minors.- — Length 7.2 to 8.4 mm., width 4.1 to 4.7 mm. 

 Similar to females in clypeal outline and pronotal configuration. 

 Clypeal carina present but not as pronounced as in females; frontal 

 carina low, nearly straight, highest in middle instead of at ends as in 

 females. Similar to male majors in other respects. 



Females. — Length 7.1 to 9.6 mm., width 4.0 to 5.2 mm. Differing 

 from the male majors in the foUow^ing respects: Head with broadly 

 arcuate clypeus, shallowly reflexed anteriorly and laterally, anterior 

 margin slightly emarginate; disc flat, transversely rugosely punctate; 

 clypeal carina broadly raised, highest medially, laterally becoming 

 merely a raised hne between the clypeus and genae. Frons and genae 

 coarsely, irregularly punctate, some of the pmictures bearing fine 

 reddish setae. Carina of vertex distinct, lowest at the midpoint, rising 

 evenly (in the majority of specimens) to the point where the carina 

 terminates near the base of each eye; in a few of the diminutive fe- 

 males the carina straight across, not raised laterally, but in the larger 

 specimens the carina distinctly elevated near each eye, horns not 

 present, the elevated portions being merely the ends of a very obtuse 

 V-shaped carina. Behind the carina the vertex bears some scattered 

 coarse punctures, with impunctate areas finely alutaceous. 



Pronotum moderately convex, broadly tumid in the large females, 

 only slightly so in small specimens; tumosity, when developed, approx- 

 imately as wide as head with only faint concave areas on each side; 

 lateral margins of the pronotum only vaguely bent in anterior third ; 

 surface of pronotum bearing large and small punctures similar to 

 male major, many of the large punctures of the disc bearing short 

 inconspicuous setae. Elytra and pygidium similar to those of male 

 major. Ventral surface generally with more pronounced punctures 

 than in male. Last abdominal segment not narrowed medially. 

 Foretibia slightly shorter and wider than in male major but not 

 greatly different, outer margin serrate or denticidate only above the 

 four tibial teeth and not between them. 



