156 LE CONTE — LONGICORN COLEOPTERA 



1. T. CANESCENS, plumbeo-niger, breviter cinereo-pubescens, parce cinereo-pilosus, capite, thorace, prosternoqne 



Isete rufis, thorace parce punctate, utrinque modice constricto, macula magna dorsali nigra, elytris grosse 

 ■vix seriatim punctatis, apice rotundatis, antennis cinereo-annulatis. Long. '4. 

 Missouri Territory. 



2. T. MONOSTIGMA, niger, pilis nigris erectis parce villosus, capite thoraceque parce punctatis, laete rufis, 



hoc macula parva ad medium, margineque basali nigris, elytris seriatim grosse punctatis, pedibus rufis, 



antennis articulis 5 — 11 rufis fusco-annulatis. Long. '25. 

 Oherea monostigma Hald. 57. 

 Oheropa mono&tigma Hald. Proc. Am. Phil. Soc. 4, 373. 



Pennsylvania ; Dr. Melsheimer. Smaller and more slender than the preceding ; 

 the anterior thoracic impression is very faint. 



TETKAOPES Dalman. 



Ungues fissi. 



Oculi divisi. 



Palpi articulo ultimo ovali, apice subacute. 



Tarsi articulo ultimo brevi. 



1. T. CANTERiATOR, niger, undique subtiliter cinereo-pubescens, supra coccineus nigro-villosus, thorace 



quadrimaculato, latitudine duplo breviore, lateribus modice dilatatis, elytris confertim punctatis, scutello 

 macula humerali, altera communi cordata ad medium, alteraque magna apicali nigris. Long. -45. 



Say, Bost. Journ, Nat. Hist. 1, 196 ; Hald. 53. 



Lamia canteriator Drapiez. Ann. Sc. Physiques 2, 47; tab. 16, fig. 6. (1819.) 



Lamia arator Germ. Ins. Nov. 486. 



Middle, Western and Southern States : the antennae and feet are entirely black : 

 like all the other species of the genus, it lives on various kinds of Asclepias, and is 

 usually abundant where it occurs.* 



2. T. TETROPHTHALMUS, niger, undique subtiliter cinereo-pubescens, supra coccineus, parce nigro-villosus, 



thorace 4-maculato, parce punctate, medio paulo elevate, lateribus magis subito dilatatis, margine 



basali nigro, elytris maculis utrinque 4-scutelloque nigris. Long. -37 — '54. 

 Harris Cat. 572 : Hald. 53. 



CeramLyx tetrophthalmus Forster. Cent. Ins. 41. (1771.) 

 Lamia tornator Fabr. Ent. Syst. 2, 287 : Syst. El. 2, 301. 

 Ceramhyx tornator 01. 67, 8, 52. 

 Tetraopcs tornator Sch. Syn. Ins. 3, 401. 



Middle and Southern States. The medial external spot of the elytra is oblong. 

 The antennse and feet are entirely black. The pubescence of the thorax is less dense 

 than that of the elytra. 



•A very singular Mexican species was found at Puento Nacional by Mr. Pease. 

 T, UMBONATUS, niger undique breviter cinereo-pubescens, supra coccineus, breviter nigro-pilosus, thorace 

 quadrimaculato, medio subito valde elevate, parte elevata nigra punctata, elytris parce punctatis, macula 

 communi transversa ad medium apiceque usque ad quadrantem plumbeo-nigris, scutello maculaque postica 

 nigerrimis. Long. -45. 

 The elevation of the thorax is elliptical, and quite sharp at the edge ; the antennae and legs are black. The black 

 spot of the elytra is at the anterior part of the apical blotch. 



