70 TERTIARY RHYNCHOPHOROUS COLEOPTERA. 
prothorax with its ocular lobes, the contiguity of the front coxze, and the 
relative proportions of all but the basal segment of the abdomen, conspire 
to indicate that it belongs to the Alophine. The first segment of the 
abdomen, however, is exceptionally long, nearly twice as long as the 
second, and fully as long as the long metasternum, so that it is impossible 
to place it in any of our living genera of Alophinze. It is also remarkable 
for the relatively small size of the prothorax as compared to the abdomen, 
being scarcely half as wide as the elytra at their base, as in Triglyphus. 
The side pieces of the metasternum are narrow and those of the mesosternum 
equal, and divided diagonally by a straight suture. 
A single species occurs at Florissant. 
CENTRON MORICOLLIS. 
Piet Biss G76: 
This is one of the largest and most striking of the Florissant Rhynchoph- 
ora. The head is small, well embraced by the prothorax, finely and deeply 
punctured, the punctures usually separated from one another by their own 
diameter, being represented too closely crowded on the plate; the rostrum 
is stout, uniform, and nearly straight, scarcely longer than the short thorax, 
broadly rounded at the apex, and faintly and finely punctate; antennal 
groove straight, extending nearly the entire length of the rostrum and 
striking the middle of the large transverse oval eye, not given in the figure. 
Prothorax subglobular but much broader than long, studded profusely with 
exceedingly large, sharp, and very deep punctures, more closely than repre- 
sented on the plate, nearly 0-2"" in diameter, and giving the thorax the 
appearance of a mulberry. Elytra together fully twice as wide as the pro- 
thorax, each about twice as long as broad, with series of narrow tuberculate 
and punctate ridges and between them series of distinct and sharp, pretty 
large circular punctures separated usually by twice their own diameter in 
each row. Legs moderately long, the femora stout and transversely and 
finely striato-punctulate. 
Length, excluding rostrum, 10""; rostrum, 2""; width of thorax, 3-1"; 
of elytra, Laxey oan 
Florissant, Colorado. Two specimens, Nos. 5209, 8354 and 9256. 
