70 FAMILY ii. C 



mm. in length, occurs in Canada and Michigan and probably in 

 northern Indiana. 



77 (305). BEMBIDU-M CARINULA Chaud., Rev. et Mag. Zool., XX, 1808, 239. 



Broad, slightly depressed. Coppery bronze to black ; antennae and 

 femora bronzed-piceous, the tibine and tarsi often paler. Thorax with the 

 sides curved in front, deeply sinuate behind; hind angles subacute, cari- 

 nate; disk alutaceous, finely wrinkled near base and along the median 

 line ; basal impressions broad, deep, bistriate. Elytra one-half witter than 

 thorax, alntaceous, finely striate, the striae finely punctate. Length 5.5-7 mm. 



A handsome bronzed form, common along the beach of Lake 

 Michigan and the larger lakes of northern Indiana ; also in Craw- 

 ford County, May 13-October 21. 



78 (304). BEMBIDIUM PUNCTATOSTRIATUM Say, Trans. Anier. Phil. Soc., II, 



1823, 83; ibid. II, 498, 550. 



Robust, moderately convex. Bronzed, more or less coppery ; antennae 

 and legs bronzed-piceous, the femora at base and the tibiae beneath often 

 reddish-yellow. Thorax with sides slightly curved in front, sinuate behind : 

 hind angles prominent, acute, not carinate ; disk slightly rugose at base 

 and along the median line, the basal impressions broad and deep. Elytra I 

 striae deep and very distinctly punctate. Length 6.2-7.5 mm. 



Crawford County; rare. May 17. The largest species of the 

 group. 



B. robusticolle Hayw., 5.7-6.2 mm. in length, is known from 

 Michigan, Iowa and Kansas, and doubtless occurs in northern In- 

 diana. 



79 (311). BEMBIDIUM COXENDIX Say, Journ. Phil. Acad. Nat. Sci.. Ill, 



1823. 151 ; ibid. II, 97. 



Slightly elongate, rather slender. Greenish-bronze or bluish-black, 

 shining; antennae, femora and tarsi bronzed-piceous; tibiae, base of femora 

 and two basal joints of antenna reddish-brown. Thorax one-half wider 

 than long, sides moderately curved in front, sinuate behind : hind angles 

 slightly prominent, subacute, very finely carinate; disk minutely alu- 

 taceous, the basal impressions broad and deep. Elytra one-third wider 

 than thorax, deeply striate-punctate. Length 5.5-6.5 mm. 



Throughout the State; scarce. April 19-September 7. Occurs 

 along moist sand bars of streams. One of the most handsome mem- 

 bers of the genus. 



80 (311a). BEMBIUIUM CONFUSUM Hayw., Trans. Auier. Ent. Soc., XXIV, 



1897, 52. 



Moderately robust, convex. Bronzed, usually coppery, shining; disk 

 of elytra dull brownish-yellow; legs and basal third of antennae pale yel- 

 low. Thorax less than one hall wider than long, sides curved nearly to 

 base,; hind angles not prominent, subrectangular, feebly carinate; disk 



