156 THE ENTOMOLOGIST. 



its wings cleflexed ; C. immanata rather resembles a Deltoid : 

 and this difference arises from a difference in structure, the 

 fore wings of C. immanata being somewhat narrower and 

 somewhat more pointed, in some individuals almost falcate. 

 Thirdly — The colour and markifu/s : both s|3ecies vary 

 greatly in colour, especially as regards the disk of the fore 

 wings, the extremes being dark smoky almost black, and pale 

 cinereous almost white ; but C. russata has a very common 

 variety in which the disk is fulvous : C. immanata has no 

 such variety : C. immanata, moreover, has two narrow, waved 

 and angulated, transverse, chesnut bands on the fore wings, 

 which are never so distinct in C. russata : moreover, there is a 

 difference in the exterior outline of the broad central band 

 of the fore wings ; " in both species this commences at the 

 costa, at about two-thirds of the distance between the base 

 and the tip, and runs across the wing for a little way with 

 very small teeth, then shoots out into a large bilobed (some- 

 times, in C. russata, trilobed) tooth [projection], which is fol- 

 lowed by another not quite half as large, and, lastly, slants 

 away to the inner margin, forming three more teeth not much 

 differing in size, but the distinction is this, that in C. imma- 

 nata these teetli, especially the largest of them, are more pro- 

 minent and acute ; in C. russata they are not so prominent 

 and often rounded." Fourthlt/ — The larva of C. russata is 

 dull ochreous at first, but afterwards brighlish green, and often 

 ornamented with red on the sides : the larva of C. immanata 

 is bright yellow at first, but afterwards dull green, and never 

 ornamented with red on the sides : Mr. Hellins also says 

 that the anal points are acute in C. russata, obtuse in C. 

 immanata. 1 have described both larvae from nature without 

 observing this, but have added these words in inverted com- 

 mas, as quoted from Mr. Hellins. — Edward Newman. 



Description of the Larva of Acronycta strigosa. — The 

 egg is laid at the end of June, on the twigs of Crataegus 

 oxyacanlha (whitethorn), more particularly in old whitethorn- 

 hedges, growing in chalky districts throughout the neigh- 

 bourhood of Cambridge : the larva emerges in July, and is 

 usually full-fed at the end of August or beginning of Septem- 

 ber. Head porrected, flat, of about the same width as the 

 2nd segment : body of nearly uniform width throughout ; the 

 segments strongly pronounced, the divisions between them 



