180 TORTRICINA. 



small size. It does not seem to vary in its general appearance 

 and markings ; it bears some resemblance to Param. aspersana, 

 but is always very much darker, and the anal angle is less pro- 

 duced than in that species. 



The imago is taken plentifully on mountain heaths in the 

 north of England, also on boggy moors in the south of Scot- 

 land, and near Edinburgh. In the vicinity of Manchester it is 

 captured among " Vaccinium Myrtillus, the males flying in the 

 afternoon, the females at rest." Mr. R. S. Edleston, in lit. 



The larva feeds on Alchemilla alpina (The Alpine Ladies' 

 Mantle). 



Genus V. TERAS, TREITS. 



Palpi twice as long as the head ; porrected horizontally, remote 

 and diverging ; densely clothed with short scales ; clothing of the 

 middle joint not enveloping the apical. Basal joint curved, pyri- 

 form, stoutest at the apex ; apical cylindrical, obovate, twice as long 

 as the basal ; middle joint four times as long as the apical, slender 

 at the base, arching upwards ; stoutest beyond the middle. Maxillae 

 as long as the palpi. Thorax globose, tufted behind. Anterior 

 wings with minute elevated tufts of scales ; length equals twice the 

 width. The costa much arched, and deeply concave in the middle. 

 Apex produced ; dorsal margin straight. The discoidal cell is situ- 

 ated in the middle of the wing, slightly arched in shape, and pro- 

 ceeds rather more than three-fifths its length. The costal vein runs 

 parallel with the costa at the base, and terminates in the costal in- 

 cision ; the subcostal nervures equidistant, the first and second termi- 

 nate in the incision, and the third beyond ; the submedian nervure 

 is inserted before the middle of the submedian vein. Posterior wings 

 ample, apex acute, apical margin concave ; the basal angle produced. 

 Abdomen long and slender in the $ , stouter in the $ ; tufted at the 

 apex in both sexes. 



A peculiar genus, containing but one species, and that liable 

 to considerable variation. It is allied to the Peronece, but abun- 

 dantly distinct from them, and from all other known genera, 

 British or European, by the deeply -excavated costal margin of the 

 anterior wings. 



1. caudana, Fabr. Alis anticis subcaudatis; fusco-cinereis, strigulis 

 fuscis ; margine dorsali flava vel sanguinea ; posticis fusco-griseis ; 

 subtus cinereo-reticulatis. <$ Exp. al. 8-9 lin. 



Head and face drab. Eyes black. Palpi above and at the sides 

 drab ; straw-colour between and beneath. Antennae drab above 



