PROC. ENT. SOC. WASH., VOL. 20, NO. 8, NOV. 1918 163 



3. Middle fovea very shallow, nearly circular in outline; basal plates 



black phytophagicus (Dyar) 



Middle fovea deep, rectangular in outline; basal plates pale 4 



4. Supraclypeal area broad, gently convex; ocellar basin broader than 



long, the lower wall rounded; stigma truncate 



albidovariatus (Norton) 



Supraclypeal area narrow, strongly ridged; ocellar basin longer 

 than broad, the lower wall rather sharply defined; stigma oblique 



floridanus Rohwer 



5. Head and scutellum smooth, shining; antennae rather slender 



reaching beyond the apex of the scutellum; small species 



californicus Rohwer 



Head and scutellum opaque, with distinct sculpture; antennae 

 stout, not reaching beyond the apex of the scutellum 6 



6. Middle fovea elongate breaking through the frontal crest ; pre- 



scutum black; tergum black fraternalis (Norton) 



Middle fovea shorter, not breaking through the frontal crest; pre- 

 scutum rufous; tergum suffused with ferruginous basally 



quercivorus Rohwer 



7. Abdomen with a pale band dorsally 8 



Abdomen black 9 



8. Postocellar furrow straight; no oblique impression behind the 



lateral ocelli; postocellar area gently convex, four times as wide 



as long floridanus Rohwer 



Postocellar furrow angulate medianly; an oblique impression be- 

 hind each lateral ocellus; postocellar area convex parted by a 

 median impression, three times as wide as long 



albidovariatus (Norton) 



9. Middle fovea breaking through the frontal crest; postocellar area 



convex, with a median impression, about three times as wide as 



long fraternalis (Norton) 



Middle fovea not breaking through the frontal crest; postocellar 

 area flat, without a median impression, about four times as wide 

 as long quercivorus Rohwer 



Craterocercus fraternalis (Norton) 



Hemichroa fraternalis Norton Trans. Amer. Ent. Soc., vol. 4, 1872, p. 811. 

 Craterocercus fraternalis Rohwer, Proc. U. S. Nat. Mus., vol. 41, 1911, p. 

 385. 



Type. Probably in collection Academy Natural Science, Phila- 

 delphia. Specimen subsequently determined by Cresson in 

 Coll. U. S. Nat. Mus. 



Distribution . Texas . 



As far as known the species as here restricted occurs only in 

 Texas. The species which has been previously confused with 



