ROLAND HAYWARD. 25 



The type is a male and is in my own collection. It is from 

 Phoenix, Ariz. Cotypes exist in the collections of Messrs. Blauch- 

 ard, Bowditch, Fall and Wickham, and in the National Museum 

 and Museum of Comparative Zoology. 



Specimens have been seen from Plioenix, Arizona; Albuquerque 

 and Coolidoje, New Mexico; Utah; La Junta, Colorado, and El 

 Paso, Texas. 



7. A. aclstricta. Putz. — Elongate, convex. Color piceous or nearly black, 

 shining, tlie females finely alutaceous. Head as wide as the thoiax at apex ; 

 frontal grooves short, moderately deep, not extending forward on to the epis- 

 toma; antennae nearly as long as the head and thorax, slender, ferruginous; 

 palpi rufous. Prothorax about one-half wider than long, widest in front of mid- 

 dle, subcordate, as wide at base as apex, inipunctate or very sparsely punctured 

 at apex, punctate at base; apex emarginate, the anterior angles moderately 

 prominent, rounded; median line distinct, abbreviated for a short distance in 

 front; transverse impressions moderate; basal impressions deep, bifoveate, punc- 

 tate; base emarginate; sides strongly arcuate, the margin narrowly reflexed, 

 suddenly and deeply sinuate immediately in front of the hind angles, which are 

 prominent, acute and acutely carinate. Elytra together scarcely wider than the 

 thorax and nearly twice as long as wide, subparallel, deeply striate: humeri 

 scarcely subangulate; strise very distinctly jiunctate, more finely toward the 

 apex, the scutellar stria moderate, the eighth with the row of ocellate {lunctures 

 moderately widely interrupted at middle; intervals slightly convex. Body be- 

 neath rufopiceous or piceous; meso- and metasternal episterna, sides of metaster- 

 num and of first two ventral segments sparsely punctured. liegs rufous; poste- 

 rior femora with two setigerous punctures along the inner margin; tarsi not 

 grooved on the outer side. Length .45-. 54 inch ; 11.25-13.5 mm. 



The middle tibise are normally dentate in the males. 



Very closely allied to laticollis Lee, from which it differs by its 

 more elongate form. The thorax is more deeply emarginate at base, 

 and, as a result, the hind angles are acute and more prominent. 

 The strise of the elytra are usually more strongly punctured. Ex- 

 treme forms of the two species are often difficult to separate. 



As is the case in both laticollis and carinata, the number of 

 setigerous punctures along the inner margin of the middle femora is 

 not constant. These are either two or three. When three are 

 present, the two nearest the base of the femur are usually placed 

 near together and are shorter than the one nearest the apex. In 

 some specimens examined there are two on one femur and three on 

 the other. 



It is known to me from ^[ontana, Colorado, Utah, Arizona and 

 New Mexico. 



TRANS. AM. KNT. SOC. XXXIV. (4) FKBRUARY. 190S. 



