71 



B The median interstrial row of the elytral pubescence much longer than 



the surrounding scales, hairlike on the sides, and broadly spatulate 



on the declivity; the sides of the prototum very strongly asperate. 



C The elytral striae and strial punctures distinct; the interspaces feebly 



asperate; the colour-markings indistinct; the length usually more 



than 3 mm. Eastern States. imperialis Eichh. Page 71 . 



CC The elytral striae and the strial punctures largely hidden by the 



scales; the interspaces strongly asperate; the colour-markings 



very distinct; the length less than 3 mm. California, Olive trees. 



calif ornicus Sw. 



BB The median interstrial row of the elytral pubescence but little longer 



than the surrounding scales, not conspicuously hairlike on the sides. 



C The asperities on the sides and cephalic margin of the pronotum 



very feebly developed. 



D The scales very pale cinereous, the elytra and pronotum with 



indistinct, pale yellowish markings; the elytral interspaces 



only very feebly asperate; length, about 3 mm. 



cinereus Sw. Page 72. 



DD The scales forming well-defined dark and pale markings; the 



elytral interspaces coarsely, closely, uniseriately asperate; 



length 3 • 5 mm. to 4 mm. pruinosus Eichh. Page 72. 



CC The asperities on the sides and cephalic margin of the pronotum 



rather coarse. 



D The pronotal asperities few in number, near the lateral margin, 

 usually mostly before the middle, those of the submarginal 

 row in front lunular; the pronotum only very feebly emar- 

 ginate in front; the striae and strial punctures distinct, with 

 a median row of scales on the interspaces slightly longer than 

 the others, more distinct on the declivity; the basal transverse 

 pale band on the elytra continuous. 



aculeatus Say. Page 72, 

 DD The pronotal asperities numerous, extending to the caudal 

 margin and upon the disc, those of the submarginal row in 

 front elongate and subacute; the pronotum rather strongly 

 emarginate on the middle line in front; the striae and strial 

 punctures almost entirely hidden by the scales; the median 

 row of slightly longer scales hardly visible on the interspaces 

 even on the declivity; the basal pale transverse band on the 

 elytra absent on the 3rd and 5th interspaces. 



criddlei, n. sp. Page 72. 



Leperisinus fasciatus Lee; Am. Ent. Soc. Trans., 2: 170, 1868. 



Length, 1-5 mm. A very beautiful little species; black, with whitish 

 and yellowish-brown markings. It may be separated from the aculeatus 

 group. 



Distribution. — Pennsylvania (type); Clemmton, N.Y. (Blanchard col- 

 lection). 



Leperisinus imperialis Eichh.; Berl. Ent. Zeit., 149, 1868. 



A large species, the colour markings of the aculeatus type but rather 

 indistinct in our specimens. Apparently rare. 



Recorded from Dakota, Arizona, Wisconsin, Georgia and New York. 

 We have one specimen from New York State, and have seen a closely allied 

 but possibly distinct species from Marin Co., California, in the collection 

 of Mr. H. C. Fall. 



