ROLAND HAYWAED. 211 



apex nearly truncate; anterior transverse impression nearly obsolete, the poste- 

 rior deep, tripunctate at middle; median line fine, abbreviated before and 

 behind; basal impressions broad, deep ; base truncate; sides with the margin 

 narrowly, but distinctly, reflexed, rounded, more or less sinuate in front of the 

 hind angles, which are rectangular and carinate. Elytra oblong-oval, about one- 

 half wider than the thorax, with a deep, impunctate sutural stria and sometimes 

 with traces of a second stria; first dorsal puncture slightly in front of, the second 

 slightly behind, the middle. Body beneath ferrugineous or rufo-piceous. Legs 

 testaceous. Length .12 -.15 inch : 3 3.75 mm. 



Readily distinguishable from the others of the group by its more 

 robust form and larger size. From femigineus, which in general 

 faeies it most nearly resembles, it is at once recognizable by its im- 

 punctate sutural stria and more prominent eyes. The sinuation of 

 the sides of the thorax varies from moderately deep to feeble, and 

 with it the hind angles vary from scarcely rectangular to almost 

 subacute, being more prominent in specimens in which the sinuation 

 is deepest. The angular carina is also more marked in some exam- 

 ples than in others. The spots on the elytra, when present, are 

 not well defined, and in specimens in which the margin is paler, the 

 pale color of the sides gradually merges into the darker color of the 

 disk. 



It occurs in Arizona and California. 



19. T. ferrugiiieiis Dej. — Form robust. Color ferrugineous, shining. Head 

 slightly elongate, as wide as the thorax at apex ; eyes rather small, somewhat 

 flattened ; antennae scarcely one-half as long as the body, pale fuscous, more or 

 less testaceous at base ; palpi testaceous. Prothorax about one-half wider than 

 long, wider at base than apex, subquadrate; apex very slightly emarginate; an- 

 terior transverse impression obsolete, the posterior distinct, finely punctate, tri- 

 punctate at middle; median line distinct, abbreviated at each end ; basal impres- 

 sions broad, moderately deep; base truncate; sides with the margin narrowly 

 reflexed, slightly arcuate in front, feebly sinuate behind ; hind angles rectangu- 

 lar, not carinate. Elytra more than one-half wider than the thorax, nearly oval, 

 convex, with a sutural and one fine, abbreviated dorsal stria, rarely also with 

 traces of a third ; sutural stria distinctly punctulate to behind the middle; first 

 dorsal puncture about one-fourth from base, the second very slightly behind the 

 middle. Body beneath ferrugineous. Legs testaceous. Length .10. 13 inch; 

 2.5-3.25 mm. 



A very distinct species, easily recognizable from the others of the 

 group. The superficial resemblance between it and the next is, 

 however, quite strong, but the two may be distinguished by several 

 characters besides the difference in the structure of the mentuni, on 

 account of which the latter is placed in a separate group. Among 

 these the most marked are the greater length of the frontal grooves, 



TRANS. AM. ENT. SOC. XXVI. FEBRUARY, 1900. 



