1864.] 631 



size, but always narrowly connected with the margin a little before the tip of 

 the anterior branch of the 3rd longitudinal. Neuration normal, save that the 

 cross-vein between the 1st and 2nd longitudinals is entirely absent. Anterior 

 branch of the .Srd longitudinal slender, but distinct throughout, and nearly de- 

 scribing a circular arc of 45°. with the convexity towards the costa. Length 

 (dried) % .05 inch: ? .05— .06 inch. Wing % .06 inch; 9 .06— .07 inch. 



Oue S . five 9 - bred from the gall S. bras><icoirles Aug. 24 — 28. Of 

 their Natural History I kiiow nothing. This .species may not impro- 

 bably be identical with Say's Cec. ornata, so far as we can judge from 

 his very brief and imperfect description, though it seems that Osten 

 Sacken and Wiedeman still refer that species to Cecidom;i/ia, perhaps 

 from not having identified it with any specimens in their possession. 

 Say's species occurred Sept. 13th in Philadelphia, so that the time of 

 capture agrees very well. In any case his description is utterly insuf- 

 ficient to identify any insect in th.s very difficult family, and ought 

 therefore to be disregarded. The hairiness of the hind legs in 1-macn- 

 lata is remarkable and unusual; but. judging from the name. 6Vc. 

 liirtlpes 0. S. must also have some of its legs hairy, though nothing is 

 said on the subject in the description. In the following species all 6 

 femora are hairy. 



H. D. decem-maculata n. sp. (Recent.) % 9- Pale luteous with sparse whit- 

 ish-gray hairs. Head with the eyes coal-black. Antennfe (dried) % full 1^ 

 times as long as the dried body, 22 — 25-jointed (2-f-20 to 2-\-'i:\), 22-jointed in 

 one recent %, the last joint in one of the 25-jointed antennae tapered suddenly 

 to an acute point; the scapus more elongate than usual: the flagellar joints 

 fuscous, globular, sometimes towards the tip alternately small and large in an 

 irregular manner and with here and there a sessile i. e. double joint : the pedicels 

 whitish-hyaline and about as long as the joints : the verticils dusky, a little 

 oblique and scarcely as long as the two complete joints from which they spring. 

 Antennae (dried) 9 nearly as long as the dried body, 12 — 13-jointed (2-|-10 to 

 2-f-ll), in a recent 9 counted as 13-jointed ; the scapus more elongate than usual : 

 the flagellar joints fuscous, oval, and J longer than wide: the pedicels whitish- 

 hyaline and about J as long as the joints: the verticils fuscous and fully as 

 long as the complete joint from which they sj^ring. Thorax (recen') with a spot 

 above the origin of each wing, and the tip of the scutel, pale fuscous: in one 

 dried 9 these spots do not appear. Halteres pale, generally with the club a little 

 obfuscated. Abdomen (recent) with a terminal dorsal spot on joints 1 — 5, and a 

 large, lateral, medial spot, which is scarcely interrupted at the sutures, on 

 joints 1 — 6, all pale fuscous: in one dried 9 the lateral spots are obsolete, in 

 the others % 9 they are all as well as the dorsal spots distinct. Oviduct not 

 exserted. Legs (recent and dried) whitish, with a pale-fuscous spot on the ex- 

 terior surface of the co.xse ; femora, except towards tlieir bases, fuscous above 

 and laterally, the fuscous color almost meeting below; tibiae pale fuscous iit 



