NATURAL SCIENCES OP PHILADELPHIA. 379 



the main brood appeared, has the hyaline part of the wings much extended, 

 their brown color paler, and the sette pale. 



Length Q 79 mill. Alar. exp. 9 2225. Seta $ 45 mill. Four $; J* 

 unknown. 



Cloe. 



\\ Cloe. Subgenus A. Wings four, cross-veins rather numerous, 50 60 in 

 number. Hind wings with only two long veins and one short one. 



Cloe ferruginea, d. sp. $ Ferruginous. Eyes in the living insect double, 

 the superior ones peduncled or contracted at their base, and separated above 

 by a fissure; ocelli peduncled, the two hind ones overhung by the upper eyes, 

 so as to be entirely concealed by the shrunken eye in the dried specimen ; an- 

 tenna? with the two basal joints long, each a little fuscous at tip ; setse whitish 

 at base, fuscous at tip, in one instance vice versa. Anterior mesothoracic lobe 

 subtruncate, the corners rounded ; sternum pale, generally freckled with reddish- 

 brown. Abdomen densely freckled with reddish-brown, occasionally almost 

 piceous ; venter pale reddish-white, not so much freckled; anal processes and 

 seta? whitish. Legs pale-yellowish, with the tips of the tibiae, the tarsal inci- 

 sures and tips, and in the anterior legs the first tarsal joint, fuscous. Wings 

 hyaline, a little yellowish on the costa; veins and cross-veins moderate, sube- 

 qual, hyaline ; the costal veins yellowish, and a few of the other veins generally 

 tinged with fuscous ; a pair of isolated veinlets between the tips of each pair of 

 veins. Hind wings with numerous cross-veins on the two long veins. 



Length tf 7| 9 mill. Exp. J> 1518 mill. Seta tf 1517 mill. Five 

 $; 9 unknown. 



The subimago, from which I have bred the imago, is darker and obscurer; 

 the setas scarcely pilose except at base ; the wings futnose, the cross-veins 

 whitish-hyaline, and bordered with whitish-hyaline, and the postcosta pale; 

 the costal veins and the base of some of the other veins are fuscous, and the 

 costa is fuscous. Hind wings pale. All four wings with dense and long dil- 

 ations behind. 



Length 9 6| mill. Alar exp. 9 17 J mill. Seta 9 9 mill. One 9 ; like 

 rf, bred from. In this species the first tarsal joint is entirely obsolete in the 

 four hind legs.but distinct in the ant. $ legs, where it is about a quarter as long 

 as joint two, and also in ant. legs of 9 subimago, where it is about half as 

 long. In two imagos and one subimago, a very small intermediate seta was 

 visible in the recent insect, which disappears in the dried specimen. 



\\ Clot. Subgenus B. Four wings; cross-veins sparse, about 14 18 in num- 

 ber. Hind wings with only two veins. 



Clos fluctuans, n. sp. 9 Brownish white. Vertex sometimes ferruginous, 

 and with a double longitudinal carina ; basal joints of antennae long ; seta dusky, 

 sometimes pale at base. Thorax with a double, light-brown vitta, confluent 

 behind. Abdomen above and below generally brownish-white, sometimes 

 varied with brown : in two specimens pale-brown, with the sixth segment brown 

 above and beneath ; seta whitish. Legs whitish, with the tips of tarsi cloudy. 

 Wings hyaline, iridescent ; veins rather coarse towards their origin, cross-veins 

 fine; the veins generally brown, and occasionally edged with brown towards 

 their origin, towards the postcosta hyaline; the cross-veins always hyaline; 

 space between the first and second vein of the costa hyaline, with 15 18 small, 

 brown spots on its anterior edge, a few of them confluent; behind the second 

 vein a light brown vitta, containing about fourteen round hyaline spots some 

 of them confluent before or behind with the hyaline part of the wing with its 

 posterior edge variable and irregular, sometimes presenting six or seven large 

 obtuse teeth. Isolated veinlets, mostly single. Hind wings, with many cross- 

 veins. 



Length 9 67 mill. Alar exp. 9 13J 17 mill. Seta 9 10J 12 mill. 



1862.] 



