258 JOHN L. LE CONTE, M. D. 



Atomaria. — The species of this genus are numerous, thus far found 

 only in the northern temperate zone; the following divisions may be 

 recognized : 



A. Prothorax with the lateral margin double; 1st joint of the antennal elul» 



conspicuously smaller than the other two : 



a. Prothorax feebly bisinuateat base ferruginea, testacea. 



B. Prothorax with single lateral margin; all three of the joints of the auten- 



nal club of nearly equal size; 



b. Prothorax feebly bisinuate at base ochracea. 



c. Prothorax not sinuate at base ephippiata. 



Atomaria testacea Zira.= — Length § line. Ferruginous, smaller than^./er-r«- 



ginea, more strongly punctured, with the pubescence thinner and shorter; up- 

 per surface shining, prothorax distinctly broader than long, with rounded 

 sides and distinct hind angles. — South Carolina. 



Atomaria ochracea Zim. — -Length J line. Eounded oval, ferruginous or pale 

 brown, moderately shining, very finely and thickly punctured and clothed 

 with very short pubescence; head scarcely visibly punctured, prothorax trans- 

 verse, very convex, in front much narrower than behind, sides rounded; ely- 

 tra broadest before the middle. I found this species in Maryland, in co2)ula, 

 in September. 



Atomaria ephippiata Zira. — Length 5 line. Black, antennse legs, anus, and 

 elytra ferruginous yellow, the last with a large black spot, at the middle, which 

 extends from the side margin to the suture, near which it is very mucli nar- 

 rowed thus forming an irregular transverse band; upper surface sparsely 

 clothed with fine silvery pubescence. Prothorax and elytra very convex, so 

 that in a side view the dorsal is as great as the lateral curvature, which is 

 greater in this than in the other species, the puncturing of the prothorax is 

 finer and closer than that of the elytra. — Middle States. [A common species 

 resembling the Californian A. loetula Lee, but larger and more convex, and 

 differently colored.] 



Anthrenus museorum. — [Dr. Zimmermann notes this common European in- 

 sect as found in N'orth America; I have not as yet seen any native specimens.] 



Anthrenus adspersus Herbst. — [Dr. Zimmermann considers this species the 

 very common insect generally known as A. castanece Mels.] 



Hadrotoma Er. — [Dr. Zimmermann refers to this genus the in- 

 sect described by me as Dcarthrus lonr/ulm, New Spec. Col. (Suiiths. 

 Inst.) 73, with the remark that the antennae properly consist of but 

 ten joints, which agrees with the description given by Duval, Gen. Col. 

 Eur. ii. 256; I was misled by the original description of Erichson 

 (Ins. Deutschl. iii. 444,) in which this important character is not no- 

 ticed, and proposed for our native species a new genus.] 



Byrriius. — [In this genus, as defined by Dr. Zimmermann, are in- 

 cluded 3 divisions or groups of species, Jllicrochsefcs, Sijncali/pta and 

 Curiniiis, in which all the tarsi are retractile into tibial groves and the 

 body clothed with erect bristles; a division with 3rd tarsal joint lobed 



