CERAMBYCID^E 351 



that the legs are longer and the tarsi relatively shorter than in 

 Ondderes. Mr. Schseffer has lately (Can. Ent., 1906, p. 18) identi- 

 fied certain examples of this genus, taken by Prof. Snow in southern 

 Arizona, as tessellatus Thorns., but, with a male of that species 

 from Honduras before me, I am able to state that this identifica- 

 tion is not exactly correct, although it is an allied species. The 

 true tessellatus is much smaller: 



Lochmaeocles marmoratus n. sp. Body stout, deep black, with pale 

 cinereous-white vestiture, uniform and concealing the surface on the 

 head and prothorax, though often in great part fulvous at the sides; on 

 the elytra it is disposed in dense and uniformly distributed small spots, 

 which are irregularly pale fulvous, except about their peripheries, not 

 concealing the punctures or tubercles but forming in the interspaces 

 smaller white spots, sometimes united in slightly vermiculiform lines, 

 and with a large unevenly condensed oblique white area at the side of 

 each medially; anterior parts impunctate where denuded, the prothorax 

 fully twice as wide as long, transversely truncate at apex, feebly bisinuate 

 at base, with a strong angular lateral prominence at basal third; surface 

 coarsely, transversely plicate; elytra three-fourths longer than wide, 

 feebly cuneiform (d"), broader and almost parallel (9 ), together broadly 

 rounded at apex; punctures fine and sparse, becoming rather abruptly 

 coarser in about basal two-fifths and, in about basal fourth, coarser still, 

 closer and strongly lucido-granose, these granules abruptly wanting 

 however on the basal slope, the humeri obliquely truncate, with a promi- 

 nent tubercle at the posterior limit of the truncature; legs thick, the 

 femora moderately clavate, uniformly densely cinereo-pubescent, some- 

 times partially fulvescent, the under surface also very densely and uni- 

 formly cinereo-pubescent, excepting the met-episterna and one or two 

 small sternal spots of pale fulvous. Length (cf 9 ) 24.0-28.0 mm.; 

 width 9.0-10.8 mm. Arizona (San Bernardino Ranch, Cochise Co.), 

 F. H. Snow. Four examples. 



This species differs from tessellatus in having the flat frontal 

 surface rather sparsely pubescent, with a fine fulvous line at each 

 side along the eyes, in having longer antennae, almost three-fourths 

 longer than the body in the male, becoming gradually blacker 

 basally through feebleness of the pubescence, the scape stouter and 

 nearly glabrous, in having the spiculiform porrect processes of the 

 antennal tubercles nearly parallel, in having the elytral punctures 

 very much sparser, the ferruginous spots paler and more margined 

 with white and the lateral white area not limited behind by a slightly 

 darker region. In tessellatus the front is very densely clothed, the 

 tubercular processes short and strongly oblique inwardly, the 

 antennae densely clothed to the base and the elytra with a feeble 



