140 CONNECTICUT GEOL. AND NAT. HIST. SURVEY [Bull. 



chanters pale, the front femora pale below ; venter of femora v^ith 

 scattered spines not in definite rows; wings clear with 10-12 ante- 

 nodals in the front wing, 6-7 in the hind; 6-9 postnodals in front 

 and 6-9 in the hind wing. 



Abdomen: black or dark brown, the following pale: ventral 

 half of the lateral surface of terga i and 2 ; a dorsal mesal stripe 

 on I and 2 and a basal spot on 3 ; lateral spots at the base of terga 

 4-8, the lateral areas on 7 and 8 sometimes indefinite; superior 

 anal appendages yellow, the tips sometimes greenish, the two 

 together forming a distinct lyre-shaped figure; inferior appen- 

 dage brown, nearly as long as the superiors, each of the two arms 

 half as long as the entire appendage. 



Female. — Yellow of the male usually replaced by green or 

 greenish yellow. Vulvar lamina (Fig. 20, No. 3) consisting of 

 two short lobes (.3 mm. long) united on the meson for half their 

 length, their tips evenly rounded ; ventral margins of terga 9 sep- 

 arated by .7 to i.o mm.; superior anal appendages green or pale, 

 .5 mm. long and pointed at tips; length of terga 7, 8, 9 and 10 

 measured on the dorso-meson, 2.5, 1.5, i and .5 mm. respectively. 



Measurements: total length, male 35, female 31 mm.; length 

 of abdomen, male 24-25, female 21-25 mm. ; length of hind wings, 

 male 20, female 20 mm. ; width of hind wings, male 6.5, female 

 7 mm. 



Connecticut.— Guilford, 13 July, 1920; Orange, May, 1922 (P. G.). 



New England. — June 24- August i. 



Lanthus parvulus (Selys) 



Bulletin de rAcademie royale . . . de Belgique, 21 : 56 : 1854. 



Adult, male. — Color yellowish green and black. 



Head: yellow with dorsal and ventral margins of the labrum 

 and a stripe between front and clypeus black ; vertex and occiput 

 mostly black, with pale spots in front of the ocelH, and small spot 

 on caudal surface of the occiput. 



Thorax: pronotum black, with two small mesal spots, a lateral 

 spot on each side and portions of the cephalic margin pale; meso- 

 thorax with less yellow or green than albistylus, with a median 

 streak and caudal spot on each episterna, and a faint yellow line 

 above the mesopleural suture ; legs entirely black, wings clear. 



Abdomen: nearly all black, with yellow on the sides of seg- 

 ments I and 2, and sometimes a trace on 9; anal appendages 

 black; in lateral profile the dorsal surface of the superiors is 

 nearly straight, the ventral surface has a basal tubercle ; in dorsal 

 view the lateral surfaces are gently curved but never sigmoid as 

 in albistylus. 



Female. — The vulvar lamina (Fig. 20, No. 2) are nearly two- 

 thirds as long as the ninth sternum, the median notch is broad and 

 the apical points well separated ; length about i mm. 



