346 REVISION "i nil: TENEBRIONIDiE OF AMERICA, 



SITOPHAGUS, Muls. 

 Bitophagus, Muls., < ol. France; Latigenes, p. 204. 



Easil) known from our other genera bj its depressed form, being almost perfectly Hat 

 above. The epipleura? are abbreviated. 'Hie antenna?, though gradually thickening to- 

 ward the tip. arc less coinpad than in Bius, in which also the epipleura? do not attain the 

 tip ol the elytra. The sexes differ from cadi other by the presence of horns on the male. 

 formed by the sides of the gena? and the sides of the epistoma. 



Two species arc known in our fauna. 



S. pallidus, Say, Pytho Journ. Acad. 3, p. 271; Lee, (Adelina Ann. Lye. 5, 148 \ata, Dej. Cat 



This is the larger of our two species, ami has the side of the head in front of the eyes 

 : rolonged into a horn on each side of the head of the male. 

 Length .20 inch. 

 Hare in the Middle and Southern State-. 



s. lecontei, Born; planus I] Lee, (Adelina Ann. Lye. Y.. Mi'. 



Differs from the preceding in size and by the head of the male having a second horn 

 i'ii each side, concealed from above by the larger horn formed bj the prominence of the 

 sides ol' the front. 



Length .1 8 inch. 



Occurs rather ahundantlv in the Colorado Desert of California, in Owens' Yallev, and 



Arizona. 



ALJ3PHUS, n. g. 



Mentum trapezoidal, narrowed toward base, cmarginate in front, anterior angles prominent; ligula free, basal 



ibrane visible; gular peduncle short, narrow. Maxillary palpi long, second joint longer than third or fourth, 



tider al base, thickened toward tip, lasl join! longer than the preceding, conical, Battened anil obliquely truncate. 



i -i rongly exsert, very slightlj narrower behind the eyes, which an- distant IV. mi (Ik- prothorax, reniform .mil aot 



iiicni. Head prolonged in front of eyes, frontal suture indistinct. Epistoma hemi-hexagoual, emarginate in 



utirelj i sealing the labruni. Lateral margins of front slightly reflexed. Antennas a- long as head 



id tin i idei first joint thicker, second small, I Inn I long, equal the two following; joints four t.> eleven sub- 



join! i " i iM in. Prosternum not prominent behind the coxae, mesosternum oblique, middle coxae with dis- 

 ii aantin. Metasternal parapleural simple, moderate, slightly narrower behind. Metasternum Inns;, body 

 winged, [ntercoxal process of abdomen acute. Epipleurae entire. Tibial spurs distinct; tarsi slender; the first joint 

 ind tarsi longer than the two mccceding together. Scutellum broader than long, sub quadrate. 

 The male has tin- anterior tarsi very slightly dilated, ami a slight brush of hairs near the tip of the penultimate 

 id 'ininal segment. 



This genus is proposed for an insect to which 1 haw seen nothing similar. The head 

 JN the form seen in Cerenopus and other Scaurini, though differing from them in the 

 tarsal vestiture, the form of the antenna?, and the distribution of the antennal pores. 



A. pallidus, pale brownish ti I i ub-opaque, elongate oval. Head moderately but nol coarselj punc- 



1. Thorax broader than long, narrower in front, apex feebly emarginate, base feebly bisinuate, sides moderately 



