AMERICAN COLEOPTERA. 157 



In Leconte's series are types of many of Mannerlieim's and Maklin's 

 species, and specimens of their determination as follows : 



Q. erythrogaster Mann. Q. plagiatus Mann. 



Q. siibliinbatus Miikl. 



Q. jyedkulus Nord. (Mann.) 



Q. marginalis Miikl. 



Q. longipennis Mann. 



Q. senescens Miikl. 



Q. Kmhifer (Fauvel mss.) 



The following previously unknown have been determined from 

 description : 



Q. melanocephalus Mann. 

 Q. brunnipennis Mann. 

 Q. Tiyperboreus Erichs. 



Q. bardus Mels. 

 Q. terminatus Mels. 

 Q. peregrinus Grav. 



Q. tramparens Mots., Bull. Mosc. 1845, iv, p. 358. — I have been 

 unable to determine this species satisfactorily, but suspect it to be 

 that form of molochinus with the front bipunctate. Motschulsky, 

 however, says the " labrum is transverse and a little emarginate," and 

 this latter character is the only one which deters me from referring it 

 to that species. 



Q. explanatns Lee. Proe. Acad. 1858, p. 61.— Head large, oval, slightly 

 longer in the 9 > semiopaque, finely alutaceous and finely but distantly punc- 

 tured, with two supra-orbital large punctures distant from the eyes, another 

 near the insertion of the antennse and numerous small punctures at the side 

 behind each eye; neck rather feebly constricted. Labrum bilobed. Eyes 

 small, oval, oblique, subtruncate in front. Antennae a little longer than the 

 head, slightly fusiform, last joint slender and obliquely emarginate. Thorax 

 wider than the head, broader than long, apex feebly emarginate, sides feebly 

 arcuate and scarcely narrowed posteriorly, margin explanate, base broadly 

 arcuate; disc convex, surface subopaque, finely alutaceous, very minutely 

 punctulate, anteriorly with three small equidistant punctures on each side of 

 middle in converging rows, and numerous marginal punctures along the sides 

 and at base. Scutellum sparsely punctate. Elytra narrower than the thorax, 

 conjointly a little wider than long, surface rather finely and closely punctate 

 and clothed with recumbent black hairs. Abdomen a little less densely punc- 

 tured than the elytra, more sparsely along the middle. Body beneath moder- 

 ately closely punctulate and clothed with black pubescence. Legs similarly 

 punctate. Tibiae spinulose. Length .40— .80 inch; 10— 20 mm. 



The males have the anterior tarsi a little more broadly dilated than 

 the female, the head larger and the sixth ventral segment slightly 

 emarginate at tip. 



The color of this species is black, without any tendency what- 

 ever to vary. The prothoracic process behind the coxa is large 

 and corneous. 



Occurs in California, from Tejon southward, and to Bitter Root 

 Valley, Montana. 



