480 THE ENTOMOLOGIST. 



Wilbey, of Harapstead, obtained several of these larvae. We 

 supplied them with two or three species of lichen picked off 

 twigs of oak, and had the satisfaction of seeing them cona- 

 mence feeding thereon. They fed well and grew perceptibly, 

 though not very rapidly, and about the first week in July 

 three of Mr. VVilbey's spun up amongst the lichen. About 

 this time I had but two surviving larvae which appeared to 

 be full fed, but which never attained maturity, so that we 

 might still have remained in ignorance as to the identity of 

 the larvae, had not Mr, Wilbey, more fortunate than myself, 

 succeeded in rearing an imago. On the 31st July a perfect 

 male specimen of Lithosia quadra emerged from one of his 

 three pupae. The larvae when full fed vary from one inch and 

 three lines to nearly an inch and six lines in length: they 

 are cylindrical, of moderate bulk, the segmental divisions 

 tolerably deeply incjsed ; attenuated distinctly behind, and 

 having the second segment manifestly narrower than those 

 which immediately follow it. The claspers are very long. 

 The colour of the head is black ; its surface appears as if 

 highly polished. The second segment is entirely dull grayish, 

 with a few inconspicuous yellow marks on its posterior 

 portion, only visible when the larva is fully extended. The 

 dorsal surface of the 3rd segment is black, and it bears four 

 yellowish marks along its subdorsal region, the anterior pair 

 longitudinal, the posterior transverse. The dorsal surface of 

 the rest of the body, from the 4th to the 12th segment (both 

 inclusive), is divided into two well-contrasted areas, viz., a 

 pale dorsal and a dark lateral, the dorsal area being pale 

 gray, longitudinally striated, and minutely dotted with more 

 or less vivid yellow. The principal yellow markings are: — 

 a double dorsal line, its constituent parts not parallel, but 

 enclosing an elongate diamond-shaped area on each segment; 

 exactly in the centre of these two lines there is usually an 

 indistinct thread-like medio-dorsal line, and a subdorsal line 

 somewhat interrupted and broken up into spots, and which 

 follows the outline of the dorsal line. The pattern above 

 described is interrupted three i\mes, viz., on the anterior part 

 of the 4th segment, in the centre of the 8th segment, and on 

 the posterior part of the 12th segment, in each of which 

 places it is erased by a conspicuous transverse black spot; 

 that on the 4th segment oblong; the other two somewhat 



