3 [January, 



DESCRIPTIONS OF THEEE NEW SPECIES OF BRITISH 



TORTRICIDAE. 



BY F. N. PIERCE, F.E.S., AND THE REV. J. W. METCALFE, F.E.S. 



In working thi'ough the genitalia of the British Tortrices we have 

 had the pleasure of discovering three hitherto unrecognised species. 

 They were found, in the numbers given below, in various collections, 

 and we now publish a detailed description of each (together with a 

 description of two varieties of other species), with the view, not only 

 of establishing the species, but also of eliciting further information 

 about them from collectors who may find that they possess them in 

 their cabinets. 



TORTEICIDAE. 



Cnephasia Curt. = Tortrix L., Meyr., Wlsm. 

 Cnephasia genitalana sp. n. 



Expanse 15-22 mm. 



Antennae light grey brown ; palpi, head, and thorax, dull olive white ; 

 abdomen olive white. 



Fore- wings rather naiTOw, costa gently and evenly arched, apex bluntly 

 rounded, hind margin oblique. Normally unicolorous, dull white with faint 

 olive brown tinge, without markings, except a few scattered black dots. 

 Occasionally, however, the markings are visible, brown, edges sparsely dotted 

 with black ; the margin of basal patch indicated by a narrow elbowed band 

 almost reaching the dorsal margin ; inner edge of central band twice bluntly 

 angled (below the costa and in the middle) ; outer edge shaded off ; apical area 

 with a few faint clouds ; hind-wings smoky brown. Uuder-side of fore-wings 

 smoky brown, a pale even white li^ie running along the costa. Uuder-side of 

 hind-wings shining smoky white. One specimen is considerably darker and of a 

 beautifiilly soft slate grey tinge, hind-wings darker smoky brown. 



The female has not yet been detected. 



^ genitalia. Valva abruptly tapered, costa almost straight, valvula fused 

 to costa in longitudinal fold ; sacciilus larger than valva, set with short bristles 

 from the centre, curved towards the tip ; uncus long, set •with short spines ; 

 socii long, drooping ; gnathos atrophied, tip roiinded, free ; aedoeagus cardinate, 

 slender ; vesica scobinate ; saccus rounded, not deep. 



Type, J , Coll. Pierce. 



The only locality definitely known is that of Mr. Eobert Adkin's 

 specimens from Folkestone, but it probably occurs on all the chalky 

 portions of the coast of Kent. The insect was found in various 

 collections amongst series of conspersana. 



In dried examples the ^ genitalia are clearly visible from beneath, 

 and the long curved arms of the sa.cculus at once separate it from all 

 other species of the group. 



