1865.] ENTOMOLOGICAL SOCIETY. 63 



Easily identified from the double sutural striae occurring on the 

 posterior half of elytra. 



9. Polydrosus ? elegans. — Nose black ; head, thorax, under 

 part of body, lateral and sutural margins of elytra covered with 

 white decumbent hairs. The five central ridges of elytra are 

 covered with yellowish hair blending with the white on the 

 shoulders. A mixture of the two colors occurs on the disc of 

 thorax, presenting a white longitudinal line on the sides of the 

 thorax. Legs reddish, covered with white hairs ; tarsi triangular, 

 with a single claw to each. The latter character alone will serve 

 to determine this beautiful insect. Length T \ inch. Quebec ; 

 xare. Dr. LeConte is not satisfied that the above is a true 

 Polydrosus. 



10. Grypidius vittatus. — Mouth obtuse; antennal groove 

 forms the segment of a circle ; head channeled, minutely punctured ; 

 thorax densely punctured, and parallel with the eyes. Entirely 

 covered with short erect white and yellowish hairs, which in cer- 

 tain lights are richly bronzed. White longitudinal vittae obscure 

 on the centre, but visible on each side of the thorax, commencing 

 behind the upper part of the eye and connecting with 5th, 6th, 

 7th, and posteriorly on part of the 4th and 3rd elytral ridges. 

 The three marginal ridges are white. Elytra striate. Abdomen 

 composed of five visible rings, the 3rd and 4th of equal width, the 

 last equal to the 2nd. Legs ferruginous, and pubescent. Length 

 T \ inch. Quebec ; common in fields during the summer. 



11. Microrhopala interrupt a. — Black. Head, thorax and 

 elytra densely punctured. A reddish-yellow stripe near the 

 lateral margin of the thorax is continued on half the elytra, occu- 

 pying the distance of thirteen punctures, where it terminates, — 

 but the stripe occurs again on the same laevigated ridge, posteriorly 

 for the length of five punctures. A yellow mark occurs at the 

 termination of the next kevigated^ridge in the region of the suture 

 and near the apex,on the sides of which are three punctures. Length 

 nearly T 4 g inch. Taken at the Hermitage, north of Quebec ; 

 June. 



The form is that of 31. Pluto, Newman, or 31. Xerne, Newman (?) 

 taken in the same locality. The above species is however differ- 

 ently marked from either. 31. Pluto is entirely black, and the 

 yellow stripe on the elytra of 31. Xerne is continued to within 

 a short space of the apex, and occupies a distance of twenty-four 

 punctures, while the inside mark occupies less than three. — Read 

 before the Quebec Branch, bth January 1865. 



