75^ CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



/t.^''^^H^?\ ^^xT^'^fv ^905 (B. H. W.); Westville, 9 Aug., 1906 

 (B H. W.); New Haven, 14, 20 July, 1908, 11 Aug., 1908 (B. H. W.). 

 30 July, 1911 (A. B. C). 



Tribe ALYDINI. 



Key to Genera. 



1. Hind tibiae without spines 2 



Hind tibiae armed with numerous spines Stachyociiemus 



2. First antennal segment about equal to or shorter than the second . . 3 

 First antennal segment longer than the second Megalotomus 



3. Orifices obsolete ; posterior femora extending beyond apex of abdo- 



men Tollius 



Orifices distinct, produced laterally; posterior femora scarcely 

 extending beyond apex of abdomen Alydus 



Megalotomus Fieber. 



M. quinquespinosus (Say). (PL xviii, 32.) 



Jour. Acad. Nat. Sci. Phila., iv, 323, 1824. 



Color clear brown; fourth antennal segment black apically; 

 length about 15 mm. 



New Haven, 19 July, 1905 (B. H, W.), 9 July, 1914, 6 July, 1915 

 (M. P. Z.) ; Branford, 28 July, 1905 (H. L. V.) ; Granby, 3 Oct., 1905 

 (B. H. W.) ; Darien, 4 Aug., 1908 (C. W. J.) ; Woodbury, 19 July, 1913 

 (W. E. B.) ; Portland, 15 Aug., 1913 (B. H. W.) ; Meriden, 16 Aug., 1913 

 (H. L. J.) ; Greenwich, 9 Oct, 1918 (M. P. Z.) ; Canaan, 18 Aug., 1894 

 (A. P. M.). 



Alydus Fabricius. 



Key to Species. 



1. Lateral margins of pronotum concolorous ; lateral angles blunt . . 2 

 Lateral margins with a pale raised line ; lateral angles acute ; color 



light brown ; length 10-12.5 mm pilosulus 



2. Membrane usually finely spotted; pronotum usually brown poste- 



riorly ; claspers of male arcuate ; lateral genital plates of female 



rounded at apex ; length 10-11.5 mm , conspersus 



Membrane imspotted; pronotum usually black; claspers of male 

 not arcuate, twisted; lateral plates acute; length 10.5-12 eurinus 



A. conspersus Montandon. 



Proc. U. S. Nat. Mus., xvi, 49, 1893. 



Not as yet recorded from Connecticut. 

 A. eurinus (Say). (PI. xviii, 39.) 



Jour. Acad. Nat. Sci. Phila., iv, 324, 1824. 



New Haven, 17, 24 June, 1902 (E. J. S. M.), 5 June, 1910 (A. B. C.) ; 

 Yalesville, 19 Oct., 1903 (H. L. V.) ; Thompson, 11 July, 1905 (H. L. V.) ; 

 Westville, 15 July, 1905 (W. E. B.) ; North Haven, 3 Aug., 1905 

 (B. H. W.) ; Farmington, 6 Sept., 1914 (W. M.) ; Meriden, 4 July, 1915 

 (H. L. J.) ; Kent, 10 Aug., 1918 (M. P. Z.) ; Cornwall, 11 July, 22, Sept., 

 1920 (K. F. C.) ; Westport, 24 June, 1921 (W. E. B.). 



A. pilosulus Herrich-Schaeffer. (PI. xviii, 38.) 

 Wanz. Ins., viii, loi, 1848. 

 New Haven, 24, 27, 28 June, 1902 (E. J. S. M.), 12 July, 1905 



