(0 TERTIARY RHYXCHOPHOROUS COLEOl'TERA. 



m 



jirotliorax witli its ocular lobes, the contiguitv of the trout coxa", uiid the 

 relative jiroportioiiM of all hut the basal se<;'uieut of the alidouieii, conspire 

 to indicate that it belongs to the Alophina'. The first segment of the 

 abdomen, however, is exceptionally long, nearly twice as long as *tlie 

 second, an<l fnlly as long as the long metasteruum, so tliat it is impossible 

 to ])lacc it in anv of our living genei'a of Alophina'. It is also remarkable 

 for tlie relatively small size of the prothorax as compared to the abdomen, 

 being scarceU' half as wide as the elytra at their base, as in Triglvphus. 

 The side ])ieces f)f the luetasternum are narrow and those of the mesosternum 

 equal, and divided diagonalh' bv a sti'aight suture. 

 A single species occurs at Florissant. 



Cp:ntron moricollis. 

 PI. I, Figs. 7, 8. 



This is one of the largest and most striking of tlie Florissant Rhynchoph- 

 ora. The head is small, Avell embraced by the prothorax, finely and deeply 

 punctured, the ])unctnres usually separated from one another by their own 

 diameter, being represented too closely crowded on the plate; the rostrum 

 is stout, unifoi'm, and ncarlx' straight, scarcely longer than the short thorax, 

 broadly rounded at tlie apex, and faintly and finely })unctate; antennal 

 o-roove straight, extending nearly the entire lenoth of the i-ostriun and 

 striking tlie middle of the large transverse oval eye, not given in the figure. 

 Pi-othorax subglobular but nmch broader than long, studded profusely with 

 exceedingly large, shaip, and very deep ^junctures, more closely than repre- 

 sented on tlie ])late, nearU' ()•■_>""" in diameter, and giving the thorax the 

 appearance of a mulberry. Elytra together fnlly twice as wide as the pro- 

 thorax, each about twice as long as l)road, with series of narrow tuberculate 

 and punctate ridges and l)et\veen them series of distinct and sharp, pretty 

 large circular piuictures separated usually by twice their own diameter in 

 eacli row. Legs moderately long, the femora stout and transversely and 

 fineh' striato-})unctulate. 



Length, excluding rostrum, 10"""; rostrum, 2"'"'; width of thorax, 3'1'"™; 

 of elytra,, 6-.^)"'"'. 



Florissant, Colorado. Two specimens, Nos. 520^1, Sc5.'i4 and 925G. 



