OF THE COLEOPTERA LOXGICORNIA OF THE UNITED STATES. 53 



stems of small trees are cut in a similar manner, and were the insect abundant, much 

 damage would be done to valuable young forests of a material extensively used for hoop- 

 ing casks. Guildiug (Lin. Tr., vol. xiii. pi. 30,) gives a figure of "Lamia amputator" in 

 the act of cutting off a branch. 



PTYCHODES, Chevr. 

 Body oblong fusiform, tapering forwards and backwards from the base of the elytra: head 

 long and narrow, contracted forwards; antenna' approximate, filiform, two and a half 

 times the entire length, fifth articulation reaching to the end of the elytra in the male; 

 eleventh longest, (5. J- "',) the third being next in length, (-11",) the fourth to the tenth 

 being about half the length of these: eyes divided into two upon each side, the inferior 

 pair large and nearly circular, and the upper ones contracted to a narrow line; palpi 

 slender, ultimate articulation fusiform: prothorax narrowed forwards: elytra tapering 

 rapidly, and ending in a sutural spine: feet long and slender, posterior pair shortest, 

 femora simple, anterior tilme curved, medial pair with a notch near the extremity upon 

 the outside. 



16G. P. vittatus, Fubr., (Saperda) ii. 322. 



Pale-brown, with fulvous dots, a broad, lateral, and common, BUtural white villa. 10"' long; 2f wide. 

 Drury's Illustrations, i. pi. 41, fig. 1. Inhabits Louisiana. 



Head deeply impressed between the antennas, eyes dark reddish-brown, antennae scabrous at base, a white 

 lateral vitta extending from the base of the antenna' backwards along the bead, propleura, and cpipleura: pro- 

 notuni transversely rugulose, with a white, dorsal villa, abbreviated before: elytra with a sutural spine at tip; 

 slightly shagrined and punctured at base, with about two longitudinal rows of fulvous spots, and having a broad 

 marginal vitta with its inner edge, and a common, sutural one with its outer margins scalloped: feet and under 

 parts cinereous, except a white spot upon the lateral margin, above the medial — and another above the pos- 

 terior feet. 



TETRAOPES, Dolman. 

 107. T. tetkofhthalma, Forster, tornator, Fain-., ii. 301. Am. Om., ii. pi. 11. 



Occurs from Massachusetts to Carolina, on Asclepias syriaca. Appears in Pennsyl- 

 vania in June and July. Common. 

 168. T. i wteriatoii. Drapiez. Ann. (Jen. des Sc, phys. ii. 17, pi. 16, fig. 6, — arator, 



Germar, Sp. nov., 180, — cordifer, Dej. 



Mas-achusetts to Alabama, on Asclepias. Rare in Pennsylvania. M. Drapiez' figure 

 does not represent the usual characters of the species. All the specimens I have seen 

 have the medial elytra! spots confluent, forming a cordate spot, of which the apex 

 extends backwards and unite- with the apical spot, which is also common. 



Hi!). T. 5-ma< i r. \ i \, 7> Conte. 



Rufous; antennae, scute!, feet, and inferior parts black; four black spots arranged in a quadrangle upon the 

 pronotum, one upon the basal, external angle of the elytra, and another towards the outer margin behind the 

 middle; apex blackish. 4 J'" long. Inhabits Sault Ste. Marie. Cab. I. e Conte. 



VOL. X. 1 1 



