NOTES. 231 



etlier in the middle of May 1875 near Enterprise, Florida, by M. M. 

 Hubbard and Schwartz. 



Dr. Loew acknowledges that the description of Dasyporjoti qiiadri- 

 maculcdus Bellardi agrees with his Di~0)iiafi hiciuctus. The only diffe- 

 rence he finds, consists in the latter not having any white hairs on the 

 front coxae, and having such hairs on the hypopygium. I have seen 

 Mr. Bellardi's type; is looks exactly like D. bicindus. I have also 

 seen specimens from the Southern States (in Mr. v. Boeder's collection), 

 which were certainly D. hicindu!^, although they had some white hairs 

 on the fore-coxae. I doubt therefore the importance of this character, 

 and believe that the synonymy of those two names can be safely assumed. 



104. Cyrtopogon. To the description of C. Ji/ratus n. sp., I add a 

 more complete one of Walker's C. LutatiKs, and also an analytical table 

 for determining the five species hitherto known from New England. 



IScutellum flat, with very few, indistinct hairs Lutatius'SVaLiker 

 Scutellum convex, with distinct, long, erect 

 hairs (2) 

 2 f Third joint of the antennae red .... marginalis Loew 

 ' \ Third joint of the antennae black (3) 

 o f Tibiae and tarsi altogether black . . . lyratus n. sp. 

 ■ \ Tibiae and tarsi more or less red or yellow '4) 



I Tibiae red, the tip only black; the male 

 with two large black spots on the wings bimacidatiis ^alk.. 

 Tibiae red at the base only; the male 

 without large black spots on the wings chry^opoijon Loew. 



105. Cyrtopogon Lutatius. 



Dusypogon Lutatins Walker, List, etc. II, p. 357. 



Finialc. Less black, bristles on the tibiae whitish; mystax white; 

 abdominal segments, except the first, with interrupted crossbands of 

 white pollen near the hind margin; wings hj'aline. Length: 7,5 mm. 



Front and face grayish poilinose, mystax white; antennae black. 

 Thoracic dorsum clothed with a brown pollen, which forms the usual 

 stripes; the humeral callosities and the sides of the dorsum are cover- 

 ed with a more yellowish -gray pollen, which sometimes also extends 

 more or less distinctly to the intervals between the dorsal stripes and 

 the median line of the geminate stripe; a rather distinct, grayish- white 

 spot on each side of the median geminate stripe, where the thoracic 

 suture reaches it; scutellum rather flat, rugose, with but little hair; 

 grayish -poilinose in the middle, black on the sides; pleurae grayish- 

 pollinose; a shining black spot under the root of the wings; the fanlike 

 fringe of hairs in front of the halteres seems to be mixed of whitish 

 and black hairs. Halteres yellow. Abdomen of very nearly equal breadth 

 (the seventh segment distinctly narrower^, convex, black, moderately 

 shining; with microscopic transverse rugosities; first segment with whitish- 

 poUinose spots on the sides; segments 2 — 7 with crossbands of vhite 

 pollen posteriorly; interrupted on segments 2 5, subintirrupted, nearly 

 entire, on segments O — 7; they touch the hind margin of the segments 

 on the sides, but diverge from it a little in the middle; the sides of 



