1058 FAMILY XXXIX. — NOTONECTID^E. 



a bluish-black tinge, due to the transmitted darker hues of the under 

 parts; eyes pale brown; under surface with sterna dull yellow, ventrals 

 fuscous-black, the connexivals and last ventral in part paler; beak and 

 legs dull yellow, the tip of former darker. Vertex with sides straight 

 and subparallel, feebly widened opposite middle of eyes, the narrowest 

 point at base one-half or more the greatest width. Pronotum of male 

 as long as scutellum, its disk with an oblong depression each side of a 

 narrow median carina, and a broader triangular one on each flank, the 

 disk thus appearing tricarinate; in female slightly shorter than scutel- 

 lum and with only a vague median carina; front legs as in fig. 213, / 

 and y. Scutellum about three-fifths the length of claval commissure. 

 Length, 6.7 — 8 mm. 



Marion Co., Ind., Oct. 14 (W. S. B.). Staten Island, N. Y., 

 Oct. 25 (Davis). St. Paul, Minn., Oct. 10 (Hussey). Ranges 

 from Vermont and Massachusetts west to South Dakota and 

 Kansas and southwest to Titusville, Fla. On Staten Island 

 it was taken by Bueno and Davis in large numbers from a rock 

 hole in a trap-rock quarry, and Hussey found it abundant in a 

 large concrete tank at New Buffalo, Mich. 



1197 (1361). Buenoa carinata Champion, 1901, 372. 



Elongate, robust, smooth, shining. Color sordid white; scutellum 

 blackish in front, testaceous behind, sometimes wholly pale; elytra with 

 dark markings on metanotum and abdomen showing through ; antennae 

 and legs testaceous, femora and tibiae often with a blackish streak; ven- 

 trals black, the genitals and some spots on sides paler. Head, including 

 eyes, nearly as wide as pronotum in male, slightly narrower, female; 

 vertex not twice as wide in front as at base. Pronotum of male as long 

 as scutellum, its disk with two broad, elongate depressions towards 

 middle and a larger triangular one each side, the latter with an oblique 

 oval elevation between them, the narrow intervals separating the de- 

 pressions carina-like. Length, 8 — 9 mm. 



Temax, Yucatan (British Mus. Coll.). A neotropical species 

 recorded from Lakeland, Fla., by Barber, and from New Mexico 

 and California by Uhler. It is very doubtful whether the true 

 carinata occurs east of the Mississippi, the "Southern United 

 States" record of Champion being based upon a doubtful 

 determination of the Anisops platycnemis of Uhler (1884, 253), 

 now known as H. margaritacea Bueno. The specimens received 

 from W. E. China bear out his statement that "carinata is a 

 much larger and more robust species than margaritacea, being 

 almost nearly one-half as big again." 



1198 (— ). Buenoa scimitra Bare, 1925, 226. 



Smaller and more slender than margaritacea. General color as in 

 key; eyes brown; scutellum orange-yellow-; legs and sterna mostly pale, 



