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XXIII. Description of a New Species of Lithocolletis. By 

 R. F. Logan, Esq. 



[Read March 3rd, 1851.] 



Lithocolletis nigrescentella. (PL XV. fig. 9.) 



Capite fusco, f route palpisque albis. Alis anticis aureo-nigris, linea 

 distincta media basi, fasciaque valde ante medium curvata, et 

 leviter in exteriore producta ; post hanc tribus punctis acutis ad 

 costam, uno latiore ante angulum anale, et duobus obscurioribus 

 adversus apicem, argenteis ; ciliis cinereo-albidis. Alis posticis 

 griseis, ciliis cinereis interne pallidioribus. Tar sis albidis, fusco- 

 maculatis. 

 Exp. alar. 5 lin. 



Somewhat allied to Ulmifoliella, but blacker, and the anterior 

 wings longer and narrower towards the apex, much more the 

 shape of the Pomifoliella group. The first dorsal spot is also 

 much larger and more of an equilateral triangle, and the first 

 costal spot points towards the centre of the fascia, which is much 

 further from the middle of the wing than in Ulmifoliella, consider- 

 ably bent, and slightly produced on its outer edge, so as nearly to 

 form with the first costal spot a y shaped figure.* The basal 

 streak is nearly equidistant from the costa and \nner margin, (in 

 Ulmifoliella it is nearer the costa,) somewhat claviform, and mar- 

 gined distinctly with black, and there is a smaller streak of white 

 on the inner margin near the base. 



The hind wings are peculiar, the cilia being pale next the wing 

 and darker externally. The antennae are fuscous, with pale apices. 

 Tarsi white, spotted with dark fuscous. 



Taken near Morpeth in May. 



* On the right wing of the specimen the connection is complete, but not on 

 the left. 



