GEOMETRIDiE. — VENILIA. 303 



similarity from all the foregoing- insects, exclusively of their diversity 

 in form and other characters. 



Sp. 1. clathrata. Alis omnibus Jlavicantibus aut albidis, venis strigisque anasto- 

 mosantibus sinuatis fuscis. (Exp. alar. 11 lin. — 1 unc. 2 lin.) 



Ph. Ge. clathrata. Linne. — Don. vii. pi. 24i8.f. 2. — Hercyna clathrata. Steph. 

 Catal. part ii. p. 149. No. 6703. 



Wings in general yellowish and pulverulent, sometimes whitish j all with the 

 nervures fuscous, and with transverse common, more or less broad strigae, 

 occasionally anastomosing, usually four in number, but variable, sometimes 

 one and sometimes another being wanting, and in some cases two become 

 united into a kind of fascia ; cilia flavescent or whitish, according to the colour 

 of the wing, with large quadrate fuscous spots. 



In some rare instances the wings are deep fuscous, with a few scattered white 

 spots, the positions of the strigae being scarcely visible ; while in others the 

 wings are very delicately strigated, the strigae being very narrow and remote, 

 and the nervures but faintly fuscous : — it is in fact a most variable insect. 



Caterpillar bluish-green, with a pale lateral stripe spotted with black : it feeds 

 on trefoil (Trifolium Meliloti) :— the imago is found at the end of May, and 

 again about the middle of July, frequenting chalky districts. 



Local, but very abundant where found, especially at Darenth 

 and near Hertford. " York."— ^. C. Hewitson, Esq. " New- 

 castle and Tynemouth."— G. Wailes, Esq. « Durdar."— T. C. Hey- 

 sham, Esq. " Wood Ditton, Ely, &c. not unfrequent." — Rev. L. 

 Jenytis. ''Epi>mg:''—Mr.Doubleday. " Strand-on-the-green."— 

 Rev. A. H. Matthews. 



Genus CCXXXIV.— Venilia, Duponchel 



Palpi short, somewhat approximating, sparingly clothed with rather long loose 

 scales, triarticulate; the basal joint longer than the other two united, rather 

 incrassated, curved at the base; the second somewhat fusiform; terminal 

 minute, subglobose, acute at the apex : maxillw long. Antennce simple, slightly 

 robust in the males, slender in the females: head sraaR ; forehead not pro- 

 minent: e^jessm^M: thorax s\ender : t^m^-^ forming a triangle during repose ; 

 anterior with the hinder margin repanded, posterior obscurely emarginated 

 towards the apex; all, without fasciae, of a yeUow or flavescent hue, more or 

 less irregularly spotted on both surfaces with a dark colour. 



In this genus the wings are maculated on both surfaces with large 

 black blotches, disposed somewhat in transverse fasciae ; the posterior 



