1912.] 107 



than in albimana. Thorax of the female as extensively darkened as in the 

 male or more so. The cloud at end of wing more extended than in albimana, 

 reaching back half-way from tip of wing to end of subcostal vein. 



I have seen specimens from Scotland only, and have examined 

 nine males (two in the late Mr. Verrall's Collection, four in the British 

 Museum, two in the Hope Museum, Oxford, and one in the Zoological 

 Museum, Cambridge), and twenty-two females (four in the late 

 Mr. Verrall's Collection, nine in the British Museum, two at Oxford, 

 and seven at Cambridge) . They were captured by Col. Yerbiuy and 

 Mr. C. G. Lamb at Nethy Bridge (Inverness) in June, July, and 

 August, and by Col. Yerbury at Golspie (Sutherland), in August. 



Heteroneura gentilis, n. sp. S ? • 



Eesembling calcdonica in possessing only two pairs of orbital bristles, and 

 in colour of palpi and antennae, in shortness of vibrissse, and in thorax of female 

 being as extensively darkened as in the male, but resembling albimana in the 

 generally somewhat darkened face and more 

 extensively darkened four postei-ior legs, 

 differing from both in the male hypopygium 

 (Fig. 2), which, though somewhat resem- 

 bling that of caledonica in size has lamella! 

 of different sliape, they are shorter, broader, 

 and more flattened at the end, and not 

 recurved at the tip. It requires consider- 

 able care to separate the females of this 



^ . Fig. 2. H. itrntillt, o X 40. 



species and caledonica, but the wing cloud 



appears to be more restricted and the decussate bristles on f rons placed nearer 

 the hind orbital bristles than in caledonica. 



I first recognised this species from specimens taken by the late 

 Mr. Verrall in June, 1885, at Lyndluu-st (Hampshire), but it was not 

 until May, 1909, that I found it in numbers at Barton Mills (Suffolk), 

 and in June, 1910, I could have taken any number in a wood near 

 Chillesford (Suffolk). In addition to the above I have examined speci- 

 mens from Devonshire, Hampshire, Herefordshire, and Glamorgan, 

 taken by Col. Yerbury, and from Hertfordshire taken by the late 

 Mr. A. Piffard. 



Heteroneura verticalis. n. sp. c? ? • 



Remarkable for the absence of the postvertical bristles and the shape of 

 the male genital lamellse, otherwise much resembling the last two species, but 

 the thorax of the female is not so extensively darkened, resembling in this 

 respect the thorax of albimana ? . The normal number of orbital bristles is two 

 pairs, but I have seen specimens possessing a third pair. The male genital 



