FRANK E. BLAISDELL, SR. 323 



not clearly defined in any single form, much less can it be said to 

 be comprised of a definite number of joints, the width of the sev- 

 enth and eighth varying in a series, leaving this character of no 

 value. 



CiLiATUs Group 



Sy7iopsis of the Ciliatus Group 



Epistoma more broadly and not deeply though conspicuously sinuate, sinus 

 at bottom more or less transv^erse; prosternal process more or less glabrous and 

 usually much less or scarcely punctate longitudinally along the middle third 

 and central area of the dilated apex. 

 Average size moderate. 



Pronotal surface rather finely, very sparsely punctate, the punctures 

 larger at base than at apex and unequally distributed, leaving occasional 

 impunctate areas, with scattered coarse punctures at the sides. 



ciliatus Eschscholtz 

 Pronotal surface finely punctate throughout, punctures very sparsely 



placed ciliatus var. sparsus new variety 



Average size small. 



Pronotal punctures irregular, fine but dense toward the sides; impimctate 



areas not evident ciliatus var. debilis Casey 



Epistoma broadly and very feebly sinuate, the sinus generally subevenly 

 rounded. Process as in ciliatus. 



Form variable, oblong-oval, or elliptical, sometimes narrowly elongate- 

 elhptical. 



Pronotal punctures strong and not very coarse, more or less irregularly 

 distributed, sometimes leaving impunctate areas. 



Prosternum in front of coxae and process not strongly punctate and 



more or less asperate arenarius Casey 



Prosternum strongly, coarsely punctate, punctures impressed and 

 rounded, scarcely at all confluent . . arenarius var. sternalis Casey 

 Form stout, oblong to subquadrate. Pronotal punctures quite evenly 

 distributed, coarse and closely placed. 



Prosternum coarsely and more or less confluently punctate, subrugose. 



arenarius var. latus Casey 

 Coelus ciliatus Eschscholtz 



Large series of specimens have been collected yearly and care- 

 fully examined in a relaxed condition, with all parts protruded or 

 drawn out. The characters here recorded have been verified over 

 and over again. 



Foryn ol)long-o\-al, strongly convex. Lnhrum glabrous, usually with two 

 to six punctules along the apical margin. Epidomn broadly and not deeply 

 sinuate, punctuation strong, somewhat swollen at about the middle third, 

 there sparsely punctate; base arising abruptly from the frontal suture and 



TRANS. AM. ENT. SOC, XLV. 



