780 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



G. robustus (Uhler). 



Bull. U. S. Geol. Geog. Surv. Terr., iii, 390, 1877. 



Black, shining ; antennae, rostrum, and legs dark reddish brown ; 

 corium sometimes reddish; membrane white, slightly tinged with 

 brown. Length 3.7 mm. 



Known from New England only by Uhler's Massachusetts 

 record. 



Amnestus Dallas. 



Small, convex, brownish species having margin of head toothed ; 

 metasternal orifices with long and scarcely curved canal. Scutel- 

 lum triangular, almost equilateral, sides nearly straight. Corium 

 broad, posterior margin sinuate ; clavi contiguous behind scutel- 

 lum. The male genital segment is triangular with a tubercle at 

 middle ; the female ring-like, enclosing the smaller plates. 



Key to Species. 



1. Length 4 mm. ; color dark ; form strongly convex spinifrons 



Length less than 3 mm. ; usually paler ; less strongly convex 2 



2. Juga with four teeth ; disk of pronotum strongly punctate anter- 



iorly pusillus 



Juga with five teeth ; disk of pronotum obsoletely or sparsely 

 punctate anterior^ pallidus 



A. spinifrons (Say). (PI. xviii, 3.) 



Jour. Acad. Nat. Sci. Phila., iv, 316, 1825. 



Shining chestnut brown, corium a little paler ; membrane trans- 

 lucent white; antennae, rostrum, and legs reddish brown. 

 Anterior femora in female armed with a large bifid spine. Length 

 4 mm. 



A rather rare species, sometimes found under stones in spring, 

 after hibernation in the adult condition. 



West Haven, 11 May, 1905 (B. H. W.) ; Yalesville, 26 May, 1908 

 (B. H. W.) ; Southington, 27 Apr., 1910 (W. E. B.) ; Orange, 21 May, 

 191 1 (B. H. W.) ; Meriden, 1 May, 1914 (H. L. J.). 

 A. pusillus Uhler. 



Bull. U. S. Geol. Geog. Surv. Terr., i, 278, 1876. 



Reddish to pale brown, shining, corium lighter in color, mem- 

 brane white. Anterior femora of the female without bifid spine. 

 Length 2.25-2.75 mm. 



This species, occurring in Maine, has been confused with the 

 following. 

 A. pallidus Zimmer. 



Can. Ent, xlii, 166, 1910. 



Similar to the preceding but somewhat larger and having much 

 finer and less regular punctation, the disk of the pronotum being 

 almost impunctate before and behind the coarsely punctate trans- 

 verse impression. Anterior femora in the female armed ventrally 

 with a large bifid spine. Length 2.75 mm. 



