126 ENTOMOLOGICAL NEWS. [April, '06 



suggested the specific name (insignis, distinguished by a 

 mark). 



The fourth has a large, comparatively thick expasion up- 

 ward and outward, which is black in color, and is set off from 

 the body of the joint by a white or somewhat silvery crescent. 



The fifth joint is not at all compressed, and has in fact a 

 perfectly normal structure, rather depressed. 



The figure shows the ' ' flag ' ' lapped over a little on the en- 

 larged fourth joint. 



Calotarsa insignis n. sp. 



Male. Length, 6.5 mm. Head and thorax black, cinereous; probos- 

 cis, legs and abdomen yellow. Eyes contiguous for a considerable dis- 

 tance on the front, ocellar tubercle prominent, with a few small brown 

 hairs ; face black, cinereous, concave and receding below ; antennae 

 yellow, short, the third joint, except its base, infuscated, the three joints 

 of successively increasing length ; arista apical bare, slender ; proboscis 

 retracted, short, yellow, palpi very small, yellow ; occiput black, rather 

 flat, almost bare. Thorax black, cinereous, especially on the sides ; four 

 faint brown lines on the dorsum, the two inner ones close together, ab- 

 breviated behind, the two outer ones abbreviated In front ; on the side 

 of the dorsum, before the transverse suture, are three small bristles ; be- 

 fore the scutellum, at each side, are three or four very small ones ; on 

 the margin of the scutellum are five pairs of larger ones, with a consider- 

 able median interval ; the scutellum yellowish, except on the disk ; 

 humeri a little yellowish ; halteres yellow, the large, crumpled knob a 

 little infuscated ; squamae yellow, with delicate yellow cilia ; metanotum 

 black. Abdomen yellow, all the incisures, except the first, narrowly 

 blackish (the first slightly blackish at the sides) ; hypopygiurn exserted, 

 rounded, rolled up under the fifth segment; on the hypopygiurn and 

 along the sides of the abdomen are fine, erect hairs, longer, more bushy, 

 and yellow anteriorly ; behind they are brown. Fore and middle legs, 

 including coxae and tarsi yellow, the femora moderately infuscated 

 above, and with a stripe of black hairs on the front ; the tibiae gradually 

 and moderately infuscated from near the base ; hind tarsi as figured and 

 above described. Wings subhyaline, slightly infuscated toward the 

 apex ; the space between auxiliary and first longitudinal cells yellow ; 

 third vein ending exactly in the apex ; fourth vein forked, the posterior 

 branch ending half way between point of furcation and the margin ; hind 

 cross-vein hardly more than half its length from the margin. 



Female. Length, 4.8 mm. Front rather wide, narrowing slightly 

 below, opaque dark brown in color, near the antennae cinereous, with a 

 median depression ; proboscis and palpi larger, antennae smaller than 

 the male. The brown lines of the thorax are more distinct. The pos- 



