TENTHBIDINUDE ZAR.EA. ABIA. 13 



basal segment not emarglnated : kgs slender; femora not incrassated in the 



males ; tibiae armed with 2 obtuse spurs at the apex. 



The 6-jointed antennae of Zaraea distinguish this genus from the 

 other genera of this group, and from all the preceding the dissimi- 

 larity in the proportions of the basal and terminal joints of the palpi, 

 also serve to remove it, as do likewise the fasciated wings, small head, 

 having the eyes approximating behind in the males, and other differ- 

 ences in the tropin. 



Sp. 1. fasciata. ^neo-atra, tihiis tarsisque luteis, alis anticis fascia fused ; 



abdominis 9 basi albido. (Long. corp. 5 — 6 Ihi. ; Exp. Alar. 10 — llg lin.) 

 Te. fasciata. i/n«e.— Za. fiisciata. Curtis, v. ii. pi. 97. — Steph, Catal. 325. 



Nu. 3751. 

 Brassy-black; thorax with its extreme hinder margin whitish; abdomen with 



the basal segment also whitish and diaphanous; legs black, with the tibiae 



and tarsi dull luteous : wings hyaline, with a central fasciaeform fuscous 



spot. 

 The male is said to diifer in having the basal segment of the abdomen conco- 



loroiis with the others. 



Not very uncommon within the metropolitan district : it has been 

 taken at Highgate and at Birch and Coombe woods ; in the latter 

 places in some plenty in June and July : the males appear to be 

 very scarce. 



Genus V. — ABIA, Leach. 



Antennce 7-jointed, short, 2 basal joints transverse, 3rd very long, bent, 4.th and 

 5th of equal length, more robust, 2 following very short, and forming an ob- 

 tuse club : maxillary palpi of 6 unequal joints : head very small : e^es nearly 

 united behind in the male : ocelli 3 : wings as in Cimbex : body villose, 

 cylindric, and adorned with a velvety dorsal patch in the males, broader 

 and ovate in the females ; the base not emarginate : legs short and slender, 

 femora not incrassated in the males ; tibice armed at the tip with rather 

 obtuse spurs. 



Abia differs from the cognate genus in having 7 articulations to the 

 antennae ; the body of a rich metallic silken hue, the males having a 

 raised velvety patch on the back of the abdomen, which latter in the 

 females is broad, ovate and destitute of the patch : the insects are 

 comparatively of small size, and appear to be gregarious. 



Sp. 1. nigricornis. Subvillosa, nigro-cenea, antennisferrugineis,abdomineviridi~ 

 wneo, pedibus Jlavis, femoribus nigro-oeneis, alis nebula media maculaque 

 apicalij'uscescentibus. (Long. corp. 4-§ — 5^ lin.; Exp. Alar. 9 — 11 lin.) 



Ab. nigricornis. Leach.— Curtis, v. ii. pi 89 — Steph. Catal. 325. No. 3752. 



