RHYNCHITIDA—ISOTHEIN.A—TOXORHYNCHINI. 27 
greatly enlarged. Thorax nearly twice as high as long. Elytra heavily 
carinate. Legs moderately slender with normally thickened femora. 
Two small species occur in the western Tertiaries, both at Florissant. 
The smaller should be regarded as the type. 
Table of the species of Toxorhynchus. 
. 
Eye not much, if any, wider than the beak; the latter of ordinary stoutness. .minusculus. 
Hye three times as wide as the beak; the latter exceedingly delicate........ oculatus. 
TOXORHYNCHUS MINUSCULUS. 
I r mos 
PL. ty, Fig. 1. 
Head smooth but for the transverse striation or carding, which is very 
reeular and delicate; eye circular or transversely oval, surrounded with 
granulations, which are also seen upon the rostrum. ‘This is very gently 
arcuate, having a general direction nearly in continuation of the general 
direction of the upper outline of the head, and is of about the length of 
the prothorax. Prothorax rather coarsely and rather densely granulose, as 
is also the whole under surface of the body, though more sparsely, and 
with perhaps larger granulations. Elytra with about ten very prominent 
granulate carina, the interspaces also irregularly granulose, all the granu- 
lations of the same size as those on the prothorax. IFemora, and even 
tibiz, minutely and faintly transversely corrugate, on the tibize showing a 
tendency to break up into granulations. 
Length, excluding rostrum, 2™"; height, 1:1"; length of rostrum, 
O62: 
Florissant, Colorado. Seven specimens, Nos. 7344, 8952, 9224, 10024, 
10902, 14490, 15256. - 
TOXORHYNCHUS OCULATUS. 
piv, Big, 11. 
A single specimen, unfortunately with the very delicate rostrum 
broken. Head very small for this group, apparently smooth, the exposed 
side almost entirely occupied by the large subcircular eye, the hinder 
margin of which reaches the prothorax and the facets of which are unusu- 
