7^2 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



segmented ; tarsi three-segmented ; probably always phytophagous, 

 but their habits and life histories are little known. 



Key to Subfamilies. 



Ventral aspect of abdomen with a finely striated stridulatory area 

 on each side near the median line in both sexes; connexivum not 

 prominently exposed in our species Tetyrinae 



Abdomen without stridulatory areas; connexivum prominently 

 exposed in our species Odontotarsinae 



Subfamily Tetyrinae. 



Most of the species of this group are very convex in form and 

 many are of velvety appearance with frequently very variable 

 markings. A single genus and species occurs in our fauna. 



Homaemus Dallas. 



In this genus the species have the scutellum covering hemielytra 

 except at base; connexivum narrowly exposed except at apex of 

 abdomen; orifices situated near the coxae, extended in a long 

 groove with narrow parallel raised margins, curved forward 

 laterally ; and the tibiae sulcate above. 

 H. aeneifrons (Say). (PI. xviii, i.) 



Longs Exp. to St. Peters River, ii, 299, 1824. 



Velvety brown, very variable in shade, with indefinite darker 

 markings on pronotum and scutellum which become scarcely 

 appreciable in the darker specimens ; head black with violaceous 

 iridescence; connexivum spotted. Dorsal surface closely punc- 

 tured; head with decumbent pale pubescence. Length 6.5-9 mm. 



I have taken this species in large numbers in late fall in the 

 White Mountains by sweeping Solidago. It is very rare in the 

 lowlands, but extends far to the south in mountainous regions. 



Thompson, 11 July, 1905 (H. L. V.) ; Scotland, 30 July, 1904, 10 Aug., 

 1905 (B. H. W.) ; Litchfield, 16 Sept., 1908 (L. B. W.) ; Colebrook, i 

 Sept., 1911 (W. M. Wheeler). 



Subfamily Odontotarsinae. 



In this group the abdomen is destitute of stridulatory areas, and 

 many of the species are less convex than in the preceding, although 

 generally equally rounded above and below. Of the few North 

 American forms, one is found within our limits. 



Eurygaster Laporte. 



The species of this genus have the connexivum and costal margin 

 of hemielytra exposed; orifices distant from the coxae, prolonged 

 in a short straight groove, and the tibiae sulcate above. 

 E. alternata (Say). (PL xviii, 5.) 



Am. Ent., iii, pi. 43, 1828. 



