hungerford: aquatic hemiptera. 123 



Microvelia atrata Bueno. 1916. 



Bueno, Bui. Brookl. Ento. Soc, XI, p. 60. 



"Head comparatively short and broad; eyes round, rather prominent; 

 antenna short, rather stout, not much longer than head and thorax taken 

 together, joint 1 stoutest, 3 thinnest, 2 shorest, 4 longest, fusiform, 3 

 shorter than 4 and subequal to 1, which is longer than 2. Pronotum not 

 much produced, rounded behind; humeri prominent. Collum yellowish 

 with narrow black median line; suture before middle of thorax grayish 

 pilose. Hemelytra not so wide as abdomen. Corium and clavus milk- 

 white at base, a white patch in the middle cell. Legs comparatively 

 short and stout, tibiae straight in both sexes. Subparallel in shape. 



"General color, sooty black; pronotum narrowly flavous toward apex; 

 connexivum flavous edged with black above and below; grayish black 

 pilose beneath; femora light yellow basally. 



"Long., 2 mm.; lat., .9 mm. at humeri. 



"Type, female, Billy's Island, Okefenokee Swamp, Georgia, June, 1912, 

 collected by J. C. Bradley. 



"Allotype, male, differs from female in having the genital segment 

 rounded and slightly prominent. Same locality and date. 



"Long., 1.7 mm.; lat., .8 mm. at humeri. 



"Apterous male, subparallel in form; genital segment visible from 

 above, small, not very prominent; a glabrous indentation in the last 

 abdominal segment; connexivum not much reflexed; prothorax short 

 with two more or less obscure transverse sutures. Vestigial wings visible 

 at posterior edge of thorax as two minute milk-white pads. Entire in- 

 sect brown pilose. 



"Long., 1.6 mm.; lat., .8 mm. at widest part. 



"Morphoparatype, apterous male from same locality, same date. 



"Apterous female, differs from male in form, which is obovate, and 

 in the shape of the genital segment, which is visible from above. 



"Long., 1.8 mm.; lat., .9 mm. at widest part of abdomen. 



"Paratype, same locality and date as type. 



"Additional paratypes, four specimens of the forms. 



"This velvety black species secured in numbers by J. C. Bradley, and 

 so far is known only thence." 



Locality : Georgia. 



Microvelia borealis Bueno 1916. 



Bueno, Bill. Brookl. Ento. Soc, XI, p. 59. 



"Head with an impressed line down the middle; antennae slender; not 

 quite as long as head and thorax taken together; joint 1 stoutest, 3 slen- 

 derest, 2 and 4 nearly equal in thickness, the last fusiform; joint 2 

 shorter than 1, which is subequal to 3 and shorter than 4, the longest; a 

 white line next the eyes. Pronotum as long as broad, with a distinct 

 collum, rounded behind, humeral angles prominent, tumid. Both head 

 and thorax velvety black, except for the silvery stripe next the eyes in 

 the former. Eyes round, diameter half the distance between them. Hem- 

 elytra as wide as abdomen, entirely membranous; nervures prominent, 

 black, cells gray, except apical, which is white. Femora slightly stouter 

 than the tibiae, legs pilose, posterior tibise curved, bases of femora lighter 

 in color. Genital segment prominent. Fusiform in shape. 



"Long., 1.6 mm.; lat., .7 mm., at humeri. 



"Type, winged male, taken at Cranford, N. J., on the Rahway river, 

 August 8, 1904. 



"Winged female : Differs f I'om the male principally in the broader 

 form, sides of abdomen subparallel and more or less curving; hemelytra 

 do not quite cover connexivum; posterior tibiae straight. 



"Long., 2 mm.; lat., .8 mm. 



