DESCRIPTIONS OF NEW SPECIES. 



although the more conspicuous of the spots formed by the nmcl- 

 colored hairs are arranged in N series corresponding with the costa3 

 of that species. 



352. B. trimcaticollis. Elcmgatus cylindricus, niger opacus, pilis 

 sordidis irregulariter maculatus, thorace latitudiue paulo longiore, for- 

 titer granulate, postice subtiliter canaliculate, antice late emarginato, 

 augulis anticis acutis, lateribus sinuatis, antice acute pluridentatis, 

 angulis posticis rectis ; elytris rude subseriatim punctatis, apice con- 

 vexis. Long. -30 -40. 



Mas, elytris ad apicem spina subsuturali acuta armatis, angulo suturali 



acuto. 

 Femina, elytris ad apicem singulatim subangulatis. 



One specimen, from Alabama, given me by Prof. S. S. Halde- 

 man, and another from Kentucky, by Mr. J. Ph. Wild. Very 

 distinct from the preceding by the anterior part of the thorax not 

 being produced into acute horns, but being only prominent 

 laterally ; the anterior outline is broadly emarginate, and the 

 sides near the apex are armed as in the preceding with a few 

 acute teeth. 



AMPHICERUS LEG. 



353. A. fortis. Elongatus cylindricus, piceo-niger, thorace latitudine 

 breviore, rude granulate, autice bicornuto, et lateribus dentato, lateribus 

 dein parallelis, angulis posticis rectis apice rotundatis ; elytris nitidis 

 farther subseriatim punctatis, postice haud callosis. Long. -46 '66. 



Two specimens, collected at Cape San Lucas, Lower California, 

 by Mr. Xantus. Differs from A. punctipennis by the hind angles 

 of the thorax being prominent, the sides more parallel and scarcely 

 rounded, with the hinder portion of the disc granulated, and not 

 aciculate in a reticulated manner, as in that species ; and finally 

 by the posterior declivity of the elytra having no callosities. 



DIXODERUS STEPHENS. 



354. D. porcatllS. Elongatus cylindricus, niger opacus, setis fulvis 

 erectis vestitus, thorace latitudine haud breviore, antice angustato, 

 lateribus cum apice rotundatis, fortiter insequaliter dentatis, rude aspe- 

 rato, angulis posticis rectis ; elytris granulis subacutis asperatis sub- 

 striatis, apice sequaliter convexis. Long. -12 -22. 



A common species, throughout the Atlantic States, and easily 

 distinguished by the dull color, and strongly serrate thorax. 

 In D. substriatus of Europe, which occurs also in Canada and 



