NOMOPHILA] PYRAUSTIDAE 411 



blackish-edged spots between them. Hindwings light brown ; 

 termen suffused with dark fuscous ; a darker discal crescentic 

 mark. 



Britain to the Orkneys, Ireland, common but irregular ; 

 Europe, Asia, Africa, America, Australia; 6-9. Larva olive- 

 ochreous ; dorsal line darker, pale-edged ; spots large, black, 

 pale-edged ; head reddish-brown or dark brown, black-marked : 

 on Polygonum aviculare (?) and probably grasses; 8-10. 



17. PSAMMOTIS, Hb. 



Antennae f. Labial palpi porrected, second joint with 

 dense projecting scales attenuated to a point forwards, terminal 

 concealed. Maxillary palpi filiform. Tibial outer spurs . 

 Fore wings : 10 out of 9. 



The two European species constituting this genus are hardly 

 a natural group, and might perhaps be merged with Pyrausta. 



Forewings much sprinkled with fuscous . \.pulveralis. 

 not sprinkled with fuscous . 2. hycdinalis. 



1. P. pulveralis, Hb. 21-23 mm. Forewings pale yellow- 

 ochreous, much sprinkled with fuscous; first line indistinct, 

 second fuscous, somewhat curved ; orbicular and discal spots 

 very obscure, fuscous ; cilia ochreous-whitish, with two distinct 

 fuscous lines. Hindwings as forewings, but ground more whitish, 

 first line and spots obsolete. 



Kent, I. of Wight, Norfolk, Cambridge, Lancashire, local 

 and scarce ; C. and S. Europe, Asia Minor to N. Persia ; 6, 7. 

 Larva on Mentha aquatica ; 8. 



2. P. hyalinalis, Hb. 26-32 mm. Forewings pale yellowish, 

 costa suffusedly greyish-yellow; lines grey, first bent, second 

 subserrate, curved, sinuate - indented below middle ; small 

 orbicular and oblong discal spot grey ; subterminal line grey, 

 sometimes suffused into termen. Hindwings whitish-yellowish ; 

 second and subterminal lines as in forewings. 



S. England to Norfolk and Merioneth, local ; C. and S. 

 Europe, N. Asia ; 7. Larva whitish, hardly green-tinged ; dots 

 black, on shining tubercles ; head pale brown -reddish : on 

 Centaurea nigra ; 8-5. 



18. PYRAUSTA, Schrk. 



Antennae |-|. Labial palpi porrected, second joint with 

 dense projecting scales attenuated to a point forwards, terminal 

 concealed. Maxillary palpi slightly dilated at apex. Tibial 

 outer spurs J - J. 



