TEMNOCHILA. 409 
usual; but it is possible that they may be the females of two different species. The 
head is rather narrow, and the frontal channel is very deep; there are no coarse 
punctures across the upper part. The thoracic channel is very marked, and is 
entirely free from any punctuation, while the rest of the surface of the thorax is more 
or less feebly punctured. There is ne punctuation at the apices of the elytra, but the 
depression on each side of the sutural elevation is well-marked and elongate. 
28. Temnochila boboensis, sp. n. 
Ainea, subtus eneo-subcyanea, antennis pedibusque nigricantibus; capite prothoraceque minus nitidis, illo 
fortiter punctato, hoc crebre punctato, medio vage longitudinaliter impresso, margine basali subtili; 
abdomine segmentis 2°-4™ medio fortiter punctatis. 
Long. 10-14 millim. 
Mas, area submentali medio fasciculo lato instructa; abdomine segmentis 1°-4™ ad latera punctis minutis 
adjectis numerosis. 
Hab. Mexico, Bobo, Jalapa, Misantla ({ége). 
Distinguished from the other species of the group by the hind portion of the 
terminal ventral plate being markedly perpendicular; this peculiarity (which is also 
seen in 7. chalcea and its allies in the preceding group) is more largely developed in 
the female than it is in the male, and in the former sex it is more or less prolonged 
forwards in the middle, so as to give the appearance of a small depression in the 
middle of the hind edge of the segment. The punctulate thorax, and the fact that the 
impressions at the apices of the elytra are less marked than in the allies, will, in 
addition to the abdominal structure, permit of the identification of the species with 
ease. We have received ten examples of 7. boboensis. 
29. Temnochila reversa, sp. n. 
Supra senea, nitida, prothorace marginibus virescenti-micantibus, antennis nigris, articulo basali, pedibus 
corporeque subtus virescenti-cyanibus ; capite fortiter punctato ; prothorace basin versus fortiter angustato, 
margine basali subtili, parce punctato, medio tantum obsolete longitudinaliter impresso; abdomine parce 
punctato. 
Long. 14 millim. ; 
Mas, area submentali medio punctata, fasciculo transverso munita; abdomine segmentis 1°-4™ ad latera 
punctis adjectis numerosis. 
Fem., area submentali fere laevigata. 
Hab. Mexico, Toxpam, Tuxtla (Sal/é). 
T. reversa is not very similar to any other species of this group, owing to the thorax 
being more narrowed behind ; this character, in addition to the elegant colour of the 
under surface and the very obsolete impression along the middle of the thorax, will 
prevent its being confounded with 7. polita, which, moreover, has a broad basal 
margin to the thorax. There is no punctuation at the apex of the elytra. 
Only two specimens of the species have been received; the female has the last 
ventral plate quite flat, with the fine margin at its hind edge distinct, but in the male 
BIOL. CENTR.-AMER., Coleopt., Vol. II. Pt. 1, September 1891. 3 G* 
