432 TROGOSITIDA. 
88. Tenebroides helophorus, sp. n. (Tab. XIII. fig. 18.) 
Elongatus, subparallelus, minus depressus, nitidus, piceus, supra enescens, antennis pedibusque Tulis, illarum 
clava, harum tibiis, nigris ; prothorace margine laterali extus fortiter punctato. 
Long. 63-10 millim. 
Hab. Mexico, Jalapa, Chilpancingo (Hége), Playa Vicente (Sai/é). 
Antenne with an elongate black club, the terminal joint much longer than the 
preceding one. Head rather narrow, somewhat closely and coarsely punctured. Thorax 
moderately long, the anterior angles greatly produced, the sides narrowed and sinuate 
behind, the lateral margin marked externally with coarse punctures—these are largest 
behind, and cause the margin, when viewed in some directions, to appear crenate ; 
surface coarsely and closely punctured. Elytra elongate, marked with regular series of 
rather coarse punctures; interstitial punctuation very indistinct. Ventral segments 
sparingly but coarsely punctate, and bearing an elongate, scanty, depressed setosity. 
This species may be readily recognized by the coarse punctuation on the lateral 
margin of the thorax. Some other species (7. anceps and T. nigro-viridis, Lév. e.g.) 
that have an unusually coarse sculpture on the outer margin of the thorax are very 
different in appearance from 7’. helophorus. The seven examples received of this 
species show much variation in size and colour, and a good deal in the sculpture of 
the upper surface. 
39. Tenebroides nigro-viridis. 
Tenebroides nigro-viridis, Léveillé, Ann. Soc. Ent. Fr. 1888, p. 4277. 
Hab. Mexico, Guanajuato (Dugés, in coll. Sallé1), Yolotepec (Sailé). 
A very distinct species allied to 7. helophorus, but of remarkably elongate form, and 
with obsolete sculpture on the elytra. We have received only two examples, both in 
a bad state of preservation. 
40. Tenebroides pollens, sp. n. (Tab. XIII. fig. 19.) 
Major, robustus, minus depressus, nitidus, piceus vel niger, antennis pedibusque rufis; -capite prothoraceque 
subtiliter punctatis ; elytris striatis, striis dense punctatis, interstitiis subconvexis, levigatis. 
‘Long. 11-14 millim. 
Hab. Mexico, Jalapa (Hoge), Cordova (Sallé); Britisa Honpuras, R. Sarstoon, R. 
Hondo (Blancaneaux) ; Nicaragua, Chontales (Janson). 
Antenne with large club, the terminal joint twice as long as that preceding it. 
Head broad, flat, dull, finely punctate, with a small fovea near the middle. Thorax 
strongly transverse, slightly rounded at the sides, scarcely narrower at the base than in 
front, the anterior angles much produced, acute, the lateral margin fine; the surface 
finely and rather sparingly punctate; basal margin with a slight angular dilatation in 
front in the middle. Submental area large and coarsely punctate. 
