166 THE CANADIAN ENTOMOLOGIST. 



segment bordered caudally with fuscous, and base of anal pro-legs coloured 

 the same. Venter marked along the middle with a stripe like those on 

 dorsum and sides, which are about equidistant from each other and of 

 about tlie same width as the spaces between them, colour reddish-brown. 

 Some of the spaces (yellowish-white) have dark points in them. Head 

 and thoracic shield yellowish-brown. Feet fuscous and dirty yellow. 

 Four pairs of pro-legs besides anal pair, which are of the same colour as 

 the ground colour of the body. Base of anal pair black. 



" A number of these worms working in peach leaves were received 

 from Mr. T. D. Atkinson, of Holland, Michigan, in September, 1898, and 

 were said to be very troublesome. The same species was received on 

 July 3rd, 1S99, from Monroe, Michigan. One or two complaints were 

 made from other places, though no specimens were sent. 



" The larvai are very restive, wriggling violently when disturbed. They 

 bind together the leaves of the peach with fine white silk, forming nests 

 of loosely-bound leaves, in which they live and where they change to 

 pupre. The finding of the larvae on July 3rd, and also on September 17th, 

 would seem a good indication that the insect is two-brooded. Specimens 

 of the larva^ from Holland were placed in suitable cages, and the moth, 

 a nearly black insect, spreading about five-eighths of an inch, was obtained 

 the following spring. The adults commenced to appear about April 14th 

 and continued to emerge till the middle of May. Of course this is much 

 earlier than would happen if the insects were out of doors." 



Prof. Pettit's article was accompanied by excellent enlarged 

 illustrations of the larva and pupa. 



CONDEMNABLE PRACTICES IN GENERIC REVISIONS. 



Sir, — Permit me to call the attention of your readers to a faulty 

 method of citing species names, which is, unfortunately, extremely com- 

 mon in America. I refer to the omission of the genus name or its reduc- 

 tion to a mere initial. In many cases this is, of course, a proceeding that 

 is attended with no serious evil effects. A working zoologist may be 

 expected to know what P. macJuxon stands for, bibliographers would know 

 that a paper on Abnormal AntenntB of Ajax had nothing to do with the 

 Bird genus, Ajax, Less., but referred to Papilio ajax. In many cases, 

 however, authors seem to endeavor to render their work inaccessible to 

 all save specialists working on their particular group. To make this clear 



