230 MAINE STATE COLLEGE 



than shown in Prof. Comstock's figure and the caudal margin 

 sinuous, the sinuses being located where the second and third 

 black bauds touch the margin. The outline of the outer black 

 bands of the wings are not curved and continuous (as shown in 

 Comstock's figure) but quite irregular as shown in the corrected 

 cut of the wings, Plate 1, Figures 1 and 2. There is also a sub- 

 costal vein above the one that is armed with spines, which is not 

 shown in Comstock's figure, and to this the cross vein in front of 

 the second black band joins and is not attached to the subcostal 

 as shown in Comstock's figure. 



Walsh says: "The tips of the four hind paws tinged with 

 dusky." This statement usually applies to all the paws. Walsh, 

 in describing the larva says: "That at the base of the first seg- 

 ment behind the head the spiracles are located." Comstock says : 

 "There are at the union of the first and second segments pale 

 brown tubercles, the cephalic spiracles." Comstock's figure 

 represents them so located. If Walsh regarded the head as one 

 segment, then his vague statement would imply, that he believed 

 the spiracles located between the second and third. After exam- 

 ining many specimens, both alive and dead, we feel confident 

 there are three segments in front of the spiracles as shown in 

 Plate I, Figure 3. Prof. Comstock's figure of the full larva 

 shows it at rest with the head and first segments telescoped and 

 the anterior third of the body thickened. When fully extended 

 the maggot is much more pointed in front. The hooks are less 

 blunt than shown by his figure. The cut of the larva given in 

 Saunders' Insects Injurious to Fruits is entirely misleading. 



Prof. Comstock is the only one who has seriously studied the 

 anatomy of this insect since Walsh and Loew's time, and 

 though we have not confirmed some of his observations, yet his 

 paper is really the only contribution to the internal anatomy and 

 histology of Trypeta pomonella up to this time, though others have 

 contributed to a knowledge of its habits and distribution. 



Critical Remarks Upon the Life History of Trypeta. 



The firtt reference we find to the notion that codling moth 

 work bears any relation to Trypeta, occurs in Walsh's First 

 Annual Report, 1868, where Mr. W. C. Fish is quoted as follows : 



"I have found that in most cases the fruit had been previously 

 perforated hy the larva of the codling moth before being inhabited 

 by the apple maggot." 



