Report of the State Extomologist. 59 



each a small wart. There is a small yellowish spot on the sixth 

 incisure. On the seventh ring is a large gray space. The first three 

 rings have each a black mark on the side. The legs and head are of 

 the color of the body; upon the latter are some black marks. The 

 pupa is entirely covered with a violet-like efflorescence. 



The above differs in several particulars from the more extended and 

 carefully i)repared description of the same stages by Prof. French. 



A Marked Sexual Difference in the Moths. 

 The sexes of this species differ so much in their markings that the}'' 

 were described, above a century ago, as two sj^ecies, viz., Noctua lunata 

 and Noctua edusa, and were accepted as distinct until shown by me in 

 1878 {Entomological Contributions, No. IV, pp. 108-9) to be but sexual 

 forms of the same species. All the "edusa" of our collections were 

 found, on examination, to he males, and all the " lunata " females. 



Not Usually Injurious. 

 It is distributed over a large portion of the United States, but has 

 never been found to be very common or injurious anywhere. "When 

 occuri'ing in rose-houses its injuries could be j^revented by looking 

 over the stakes during the few weeks that the larvae aj^pear, and col- 

 lecting them by hand and crushing them. When occurring elsewhere 

 they should be sought for during the day upon the stalks or trunks 

 of the plants that they infest, or- on other objects in the vicinity to 

 which they would be attracted by a similarity of coloring with them- 

 selves, favorable to their concealment. 



A Hemlock Leaj-'-Miner. 



Some twigs of hemlock, Tsuga Canadensis, communicated by Prof. 

 A. N. Prentiss, of Cornell University, during the month of January, 

 were found to have a number of their leaves mined by a minute larva, 

 which was evidently a lepidopterous insect, and probably belonging 

 to the Tineidce, judging from a head-case discovered among the 

 threads that bound together some of the mined leaves. No larva is 

 known to attack the hemlock in this manner, and it is not imjorobable 

 that the insect is new to science. 



There is a possibility, however, that it may be the Gelechia ahietisella, 

 which Dr. Packard has described and figured in the Report of the 

 Commissioner of Agriculture for 1883 (pp. 150-151, pi. 3, f. 2, pi. 13, 

 figs, 7, 7a, 7b), as having been observed in the spring of 1883 in 

 the vicinity of Providence, R. I., causing sere and dead patches of 



