250 ENTOMOLOGICAL NEWS. [Oct. ,'05 



apically dorsad. At the fifth, sometimes the sixth, segment these stripes 

 coalesce and occupy the full area of the abdominal apex. The brown 

 stripes are of uncertain contour and often intensified in color toward 

 the center of each segment, thus forming a line of indefinitely shaped 

 spots. On some specimens these spots occupy the full width of the 

 lateral stripes, in which case they form a dark brown stripe right and left. 

 The last two or three segments are always more infuscated than the 

 others. Venter yellow, darkened at apex and a light brown line on 

 either side abbreviated anteriorly. Legs reddish yellow, base of hind 

 femora brown, the distal two thirds of front and hind tibise brownish or 

 black ; the distal half of middle tibise brownish. Tarsi black, middle and 

 hind tarsi reddish at base. Wings : the apical spot occupies the entire 

 apex and coalesces with the crossband except on the first submarginaL 

 cell where a quadrate hyaline spot infringes in a diagonal position equally 

 on the crossband as well as the apical spot. The upper corner of this 

 hyaline spot touches where the second longitudinal vein slightly curves. 

 The lower corner infringes slightly upon the first posterior cell and in rare 

 cases continues in a semi-hyaline fashion as a narrow shade into the 

 second posterior cell. The distal corner of the hyaline spot slightly 

 exceeds the point where the third vein branches. The brown costal bor- 

 der embraces the first basal cell except a small distal spot. The second 

 basal cell is slightly infuscated at the upper proximal portion. The third 

 and fourth posterior cells are brown, the fifth is clouded at its distal half, 

 a shade which fades away into the outer border of the anal and axillary 

 cells. The posterior branch of the fifth longitudinal vein is surrounded 

 by a brown shade widening toward the posterior margin. The discal 

 cell lightens towards middle and base into a semi-hyaline shade which 

 often affects the base of the fourth posterior cell. Anal cell widely open. 



In this species the hyaline triangle has practically disap- 

 peared, a character by which it can readily be distinguished 

 from all other North American species. 



The description was made from sixteen females taken at 

 Brown's Mills Junction, N. J. 



v 



Chrysops amazon n sp. 9 



Length 9-10^ mm. Front and face gray. The prominent frontal and 

 facial callosities, also cheeks, shining black. Palpi black. Antenna; slen- 

 der. The first and base of third 

 antennal joints reddish, second 

 joint brown and annulate por- 

 tion of third black. Thorax, 

 shining black ; two broad gray- 

 ish dorsal stripes only percepti- 

 ble anteriorly. A heavy fulvous 



C. amazon. pile on pleura. The thorax and 



the shining black abdonu-n 



