TETRAOPES. 201 
Approaches very near the common United-States species T. tetraophthalmus in the 
form and elevation of the thoracic umbo, which is of oval shape, ¢. ¢. with much-rounded 
sides, and punctate and shining; but it differs from that species in the obtuse lateral 
margins of the umbo being slightly elevated, even in the middle, and not continuous 
with the rest of the disk. In all varieties of elytral coloration the antenne retain the 
same character, having the bases and apices of the joints narrowly edged with grey. 
4. Tetraopes thoreyi. 
T. varicornt var. 11-punctato valde affinis et similis, at differt antennis omnino nigris. Oylindricus, robustus, 
cinereo subtiliter pubescens et nigro setosus, niger, supra ruber, thorace maculis quatuor, scutello elytrisque 
utrinque maculis quatuor nigris; thoracis umbone sic ut in 7’. varicorni. 
Long. 4-8} lin. 
Hab. Mexico, Oaxaca (Sailé). 
Possibly only a local variety of 7. varicornis. I retain for it the name given by Che- 
vrolat in the Sallé collection. 
5. Tetraopes thermophilus. 
Tetraopes thermophilus, Chevrolat, Journ. Ent. i. p. 190’. 
Hab. Mexico, Vera Cruz! (Sallé). 
6. Tetraopes subfasciatus. 
T. thermophilo affinis et similis, at differt thoracis umbone angustiore magis punctato et nigro-hirsuto, lateribus 
a disco sulco separatis. Niger, cinereo subtiliter pubescens, et nigro setosus, supra ruber, thorace maculis 
quatuor, scutello, elytris maculis quatuor (2* et 3* interdum fasciatim conjunctis, quartaque valde trans- 
versa) nigris ; antennis nigris, scapo aut intus aut toto rufo, femoribus (apice exceptis) rufis. 
Variat scapo pedibusque toto nigris. 
Long. 54-64 lin. 
Hab. Mexico, Cuernavaca, Puebla (Sallé). 
The second (lateral) spot of the elytra, absent in 7. thermophilus, is in this species 
large and transverse, sometimes joining the subsutural spot, and thus forming an angular 
fascia. The thoracic umbo is decidedly narrower, and much more sharply limited on 
the sides, which are also separated from the rest of the disk by a distinct sulcus; its 
surface is thickly punctured and hairy. In some respects it approaches 7. collaris of 
New Mexico, in which, however, the thoracic umbo is opaque and impunctate. The 
variety with black femora is named nigripes, Chev., in the Sallé collection. 
7. Tetraopes umbonatus. (Tab. XV. fig. 15.) 
Tetraopes umbonatus, Leconte, Journ. Ac. Phil. ser. 2, ii. p. 156 nota’; Bates, Trans. Ent. Soc. 
1873, p. 232”. 
Hab. Mexico, Puenta Nacional!, Cuernavaca, Puebla, Izucar (Sallé); Nicaraava, 
Chontales (Belt *). 
BIOL. CENT.-AMER., Coleopt., Vol. V., June 1881. | 2d 
