416 TROGOSITIDA. 
surface of the head in an angular manner. The tibie are broad, and all of them are 
armed with a few short spinules on the outer margin. The front coxe are rather 
short, and a wide space exists between their external end and the side of the thorax; 
the front angles of the prosternal flanks are greatly produced. The other characters 
are those of Tenebroides. 
1. Eupycnus lentus, sp. n. (Tab. XIII. fige. 12; 12a, underside of head.) 
Elongatus, parallelus, parum depressus, niger, antennis rufis, elytris cyaneis; fortiter punctatus, elytris striatis, 
interstitiis biseriatim punctatis. 
Long. 73 millim. 
Hab. Mexico, Tacambaro in Michoacan, Jalapa (Hége). 
Antenne red, very thick, with broad club, the joints of which are adpressed, the 
sensitive areee very small. Head rather narrow, moderately coarsely and closely 
punctured ; epistome feebly emarginate in the middle, but without any projection. 
Thorax quadrate, nearly straight at the sides, a little narrowed behind; the surface 
rather coarsely punctate ; the base truncate, the basal margin very distinct throughout, 
the lateral margin rather fine, the front angles much produced, but broad and not 
acute, the front with a raised margin extending from the angle to a considerable 
distance towards the middle. Elytra parallel, finely striate, the strize viewed externally 
appearing feebly costate, the interstices with fine transverse ruge and distinct biserial 
interstitial punctuation, Under surface shining, coarsely punctate. 
This insect has somewhat the appearance of Pycnomerus, a genus of Colydiide. 
Only two examples have been obtained. 
TENEBROIDES. 
Tenebroides, Piller & Mitterpacher, Iter per Poseg. p. 87, t. 9. f. 9 (1783). 
Trogossita, Olivier, Ent. ii. no. 19, p. 5 (1790). 
Tenebrioides, Reitter, Verh. Ver. Briinn, xiii., Abhandl. p. 65 (1874). 
This is an extensive genus of about 100 species, nearly all of which are inhabitants 
of the New World; the few exceptions are that two or three species are found in the 
Polynesian islands, two or three in the Atlantic islands of Madeira and Teneriffe, while 
a single species has been recently described as a native of Barbary and Corsica, and 
another species is nearly cosmopolitan, having probably been distributed as a result of 
commercial intercourse. 
The genus is widely known in Coleopterological literature under the name of 
Trogosita; but an older name has, however, been recently discovered for it, and 
Reitter and Léveillé having decided to use this, I follow them with hesitation and 
regret. 
The species of Zenebroides are probably all carnivorous in their habits, and when met 
