CURCULIONIDA.—BALANIN-AE. 141 
Subfamily BALANIN 42-. . 
As the only fossil species of this family have been referred to the genus 
Balaninus, the reader is referred to that genus for general remarks concern- 
ing them. 
BALANINUS Germar. 
The genus Balaninus comprises nearly fifty species, most of which 
belong to the northern hemisphere; in America, where eight species occur, 
none are found south of the United States. A couple of species have been 
found fossil in Europe, one at Aix and one at Kutschlin. while in America 
no less than six species occur and are found exclusively at Florissant, so 
that the genus may be regarded as very characteristic of the Lacustrine 
fauna. The Kutschlin species, Bb. gemitzi Deichmiiller, seems to be not far 
removed from our B. minusculus. : 
The species here’ referred to Balaninus differ from modern types in 
the brevity of the rostrum, which nevertheless is longer than in nearly all 
other fossil Rhynchophora. Whether or not males only have been found 
can hardly be told, but in no case does the rostrum nearly equal the body 
in length, and in some it is only half as long. 
Table of the species of Balaninus. 
Rostrum only about half as long as the body, or less. 
Rostrum much longer than head and prothorax together. 
Basal half of rostrum considerably arcuate........-.....-.--.--- anicularis. 
Basal half of rostrum nearly straight. 
Larger species with coarse markings; rostrum gently arcuate. .restrictus. 
Smaller species with fine markings; rostrum strongly arcuate .minusculus. 
Rostrum no longer than head and prothorax together................ Semoratus. 
Rostrum about two-thirds as long as the body. 
Larger species, with regularly and moderately arcuate rostrum... .--.--- duttoni. 
Smaller species, with strongly arcuate rostrum, bent in the middle so that the two 
ends are nearly at right angles -..-....---...:.......-- flexirostris. 
