OF THE COLEOPTEUA I.ONGICORNIA OF THE UNITED STATES. 51 



MONOHAMMUS, Latr. Serv., Ann. Em., iv. 91. 

 153. M. titillator, Fa!»:, ii. 295. Oliv., Ins., pi. 15, fig. 109. Drury. — . Harris, 88. 

 L5 I. AI. dentator, Fabr., ii. 294, carolinensis, Oliv., pi. 12, fig. 88. 



155. M. bifidator, Fabr., ii. 2S(i. 



156. AI. scutellatus, Say. (Cerambyx.) Long's Expedition, ii. 289. AT. Faber, D(j. 

 AI. resutor, Kirby, N, Z., Hi7. 



L57. M. sutor, Lin. Harris's Catalogue. 



Perhaps Dr. Harris's insect is the preceding species, which is the analogue of AT. scu- 

 tellatus. 



158. AI. MACDLOSUS. 



Blackish-brown, thoracic spines and scntel wliite; elytra cinereous and brown intermixed, the tatter in raised, 

 tufted patches, apex armed at the suture; sternum and tip of the venter reddish. 

 9'" long; (elytra 7,) 3 wide. M. maculosus, Dej, Cab. Le Conte. 



Closely allied to AI. scutellatus, but is less shining, and scarcely brassy, and the white 

 of the scutel is less pure. The essential character is the white upon and around the 

 lateral armature. 



159. AI. PULYERULENTUS. 



Ground colour brown, entirely covered with short, prostrate, whitish hair, indistinctly clouded with pale-brown 

 upon the elytra. 85'" long; (elytra 6.3,) 2J wide. Cab. Le Conte. 



General surface covered with small, impressed, brown punctures: mandibles black; labriim dotteil with brown, 

 and fringed with fulvous hair; front minutely spoitcd with brown between the eyes and antennas; frontal line 

 entire; eyes black; scapus brown, dotted ; prothorax equal, lateral spines slender; scutel whitish : base of the 

 elytra brownish, an indistinct, irregular band of the same colour behind the middle, tip unarmed; medial femora 

 and tibia' with a small, glabrous, brown spot about the middle of the posterior side. 



160. AI. tomentosus, Ziegter. Proceed. Acad. N. Sc, ii. 47. AT. confusor? Kirby, N. Z., 1G8. 



Dull cinereous with a tinge of reddish; elytra with an irregular, transverse, dark-brown band near the base, and 

 another behind the middle; base shagrined. 12"' long; (elytra 8 .J,) 4 wide. Pennsylvania. 



Head dark-brown, with a reddisli tinge, sparsely covered with prostrate, cinereous hair; an impressed line 

 above; labium blackish, hairy, margin piccous; clvpeus, testaceous with reddisli h:iir; eyes dark reddish-brown j 

 antenna' concolorous with the head, outer articulations paler, except at the tips; •'pronotum transverse, cinereous, 

 with a medial, glabrous, brown space, and two indistinct ones each side; lateral spine large, direct; scutel cine- 

 reous, impressed glabrous along the middle: elytra separately slightly rounded at lip, basal angles prominent, base 

 squate, finely shagrined ; surface densely covered with short, prostrate, cinereous hair, with a confluent series of 

 blotches, forming an irregular, transverse band near the base, and another behind the middle: under parts reddish, 

 sparsely covered with cinereous hair; feet dull brown cinereous. 



161. M. TESSELATUS. 



Ground colour brown; above, sparsely covered with yellowish-brown hair, and several irregular spots of the 

 same material; beneath, densely clothed with short, prostrate, fulvous hair. 12'" long; (elytra 9,) 4 wide. 



M. tesselatns, Dej. Cat. Cab. !,<■ Conte. M. Marm orator? Kirby, Northern Zoology, 109. 



Trophi dark reddish-brown, mandibles 1 bhtek, frontal line entire; eyes black; head above, and pronolum, sca- 

 brous; scutel covered with fulvous hair: elytra inutic, minutely shagrined at base, covered with small, impressed, 

 punctures, and scattrred dots of yellowish hair, of which there is an irregtdar row mar the suture, a more regular 

 one between two indistinct coal 1 . and a few exterior to these, the remainder lying along the external margin and 

 at the apex. 



