AGRICULTURAL EXPERIMENT STATION. 229 



careful not to market infested fruit, and try to control the importa- 

 tion of early fruits. Great importance attaches to a knowledge of 

 the pest and its liabits, so that its first appearance in an orchard 

 will attract attention and lead to prompt action against it. 



Critical Rkmarks Upon the Anatomy of Trypeta. 



Walsh, in the original description says the eyes are black, and 

 no one seems to have corrected this error. The eyes fade in cabi- 

 net specimens and are dark, but even in these they have a 

 decidedly greenish tint. The eyes are greenish in life, and in 

 varying light give green, rusty brown and beautiful steel blue 

 reflections. They are rarely variegated with brown patches. Walsh 

 says: "The tip edge of the four basal segments of the abdomen 

 white above." He seems to have overlooked the first basal seg- 

 ment, which is not at all white. The facts are, that in both male 

 and /ewia7e the white bands begin on the second basal segment and 

 in the male involve the second, third and fouith, and in the female 

 tlje second, third, fourth, fifth and occahionally the sixth. Loew 

 makes the same mistake and says indirectly that there are only 

 five segments to the female abdomen, while there are realh' seven. 

 (See Plate I, Figure 3.) Walsh and Loew seem to have examined 

 only a single female. Comstock apparently overlooked the basal 

 f^egment of the female abdomen, as he ffays, the white bands "are 

 borne by the Jlrst to the fourth segments inclusive." The sixth 

 segment of the female abdomen is apparently represented only by 

 the tergite, the segment being very narrow at the sides and below. 

 The seventh bears the sheath and ovipositor contained within it. 

 Walsh lets the reproductive system so sevei-ely alone, that it is 

 certain he did not see the ovipositor, or he would have considered 

 so important an organ. From Loew's account it would appear 

 that he mistook the last segment of the abdomen for the oviposi- 

 tor, and described that segment for it. The abdomen of the male 

 as figured by Comstock is shriveled or distorted. We have before 

 us twenty-five males and all show the ovate form, broadest at 

 about the second segment. If there is any difference the male 

 abdomen is broader in proportion to its length than that of the 

 female. The form of the abdomen as figured by Walsh and Riley 

 is essentially correct. Prof. Lintner also calls attention to the 

 correct form of the abdomen. 



The basal lobes of the wMngs are more prominent and rounded 



