260 HAUSTELLATA. — LEPIDOPTERA. 



The crenated posterior margin of all the wings at once distin- 

 guishes this genus from the foregoing genera with simple antennae, 

 and the narrowness of the anterior wings combined with their dull- 

 ness, indistinct or oblique strigations, dissimilarity in the length and 

 structure of the palpi and elongation of the abdomen of the males, 

 serve to distinguish it from Triphosa, exclusively of the diversity in 

 the period of flight, the insects of the present genus revelling in 

 the obscurity of midnight, or appearing in greatest plenty very late 

 in the evening. 



Sp. 1. Rhamnata. Alls fusco-castaneis, lineis undatis obscurioribus , anticis 

 fascia obliqud medio fused pundoque nigra. (Exp. alar. 1 unc. 6 — 8 lin.) 



G. Rhamnata. Wien. Ver%. — Sc. Rhamnata. Steph. Catal. part ii. p. 139. 

 No. 6609. 



Wings of a castaneous-brown, with various darker waved lines, and a paler un- 

 dulated one near the posterior margin, the anterior with a broad deep brown 

 fascia in which is a black dot, the middle sometimes broken into waved lines 

 — deeply angulated towards the costa, the outer angle bilobed, and somewhat 

 crenate towards the inner margin : on the hinder margin of all the wings is a 

 waved blackish line, and the cilia are clouded with fuscous. 



Caterpillar green, with a fuscous dorsal line and the margins of the segments 

 yellow ; head brown ; it feeds on the Buckthorn (Rhamnus catharticus) : — 

 the imago appears about the end of May or beginning of June. 



Local, but not very uncommon where found : I have taken it 

 repeatedly at Darenth-wood, and not unfrequently at Hertford, 

 " Strand-on-the-green." — Rev. A. H. Matthews. " Epping." — Mr. 

 Doubleday. 



Sp. 2. vetulata. Alis fuscis, fascid medio, strigisque undatis communibus ob- 

 soletissimis saturatioribus albido adnatis, anticis puncto medio fusco. (Exp. 

 alar. 1 unc. 2—3 lin.) 



Ge. vetulata. Wien. Ver%. — Ge. vetulata. Steph. Catal. part ii. p. 139. No. 

 6610. 



Fuscous j anterior wings with numerous very obscure waved fuscous striga;, and 

 condensed into a fascia in the middle of the anterior, and alternating as it 

 were with very obsolete whitish ones ; in the central fascia towards the costa 

 is a dusky spot: posterior wings similar: towards the hinder margin of all is 

 a fuscous waved line ; cilia immaculate. 



Caterpillar gray-brown, with a white dorsal line and a yellowish lateral one. 

 head brown; it feeds on the buckthorn:— the imago appears towards the 

 end of June. 



