166 JOHN L. LE CONTE, M. D. 



2. S. fagi Walsh, Practical Entomologist, ii, 58. — Black shining, head {%) 

 flattened, slightly concave, covered with erect yellow hair, rugosely punctured, 

 prothorax oblong, narrowed in front, broadly rounded on the sides, punctures 

 distant, finer upon the disc than at the sides, glabrous, except towards the front 

 angles, where there are a few scattered hairs; elytra with distinct strise formed 

 of approximate subquadrate punctures, intervals broad, flat, marked with a row 

 of fine distant punctures, tip rugosely punctured; venter strongly retuse in 

 front, segments coarsely punctured except at the hind margins, which are 

 smooth and slightly elevated; antennte ferruginous, feet brown. Long. 5-5 

 mm. 



One specimen from Illinois. Larger than our other species, and 

 easily distinguished by the characters above given. The last ventral 

 segment is feebly longitudinally impressed at the middle, and fringed 

 behind with long hairs. Mr. Walsh mentions that this species lives 

 upon the beech tree. 



3. S. californicus. — Black shining, head {%) slightly convex, finely and 

 densely rugosely ])unctured, with very short erect hair; prothorax oblong, 

 more strongly narrowed in front, very slightly rounded on the sides, moderately 

 punctured, more finely on the disc than at the sides; elytra brown, with dis- 

 tinctly marked strise, composed of close-set punctures, intervals broad, flat, 

 each with a row of fine distant punctures, tip rugosely punctured ; venter ob- 

 tusely prominent at base, declivous part scarcely concave, segments finely 

 punctured, third and fourth with a very small rounded tubercle at the middle 

 of the hind margin; antennae and feet brown. Long. 4-5 ram. 



One specimen from California kindly sent me by Mr. Andrew Mur- 

 ray. The last ventral segment has a broad, shallow, somewhat trans- 

 verse depression. Judging from the series of the next species before 

 me, specimens with black elytra may be expected. 



4. S. caryae Riley, Prairie Farmer, Febr. 1867 ; "Walsh, Pract. Entom. ii, 53. — 

 Black shining, elytra sometimes yellowish-brown; head longitudinally acicu- 

 late, clothed with longhair, front feebly impressed transversely; prothorax a 

 little longer than wide, narrowed in front, slightly rounded on the sides, not 

 densely punctured, punctures at the middle very fine, at the sides tolerably 

 coarse, and bearing a few short hairs; elytra with strise composed of approxi- 

 mate small punctures bearing short gray hairs ; tip rugosely punctured, and 

 l>ubescent; venter with the declivity slightly concave, densely punctured be- 

 hind, but more sj^arsely towards the base; the anterior margin of the declivity 

 is acute, but not retuse; antennre and feet yellowish-brown. Long. 4 — 5 mm. 



New York, Nebraska*: three specimens, which show no sexual dif- 

 ference. Said by Messrs. Walsh and Riley to affect hickory trees. 



5. S. muticus Say, Journ. Acad. Nat. Sc. iii, 323. 



One specimen, Pennsylvania. Easily recognized by the long hairs 

 proceeding from the elytral punctures; the striae are composed of large 

 punctures, separated by a greater distance than their diameter, and the 



