THE VAGABOND CRAMBUS : WHERE OBSERVED. 135 



differed greatly from its appearance at maturity, in not showing the 

 characteristic stripes and in other particulars. But I had never seen the 

 latter in its immature stages, — the published descriptions were not 

 sufficiently full to remove all doubt, — and from the small size of the 

 former, two moltingswould be required in order to attain to the mature 

 size of the army-worm, and even in a single molting very great change 

 in appearance and form is often developed. The observed habits dif- 

 fered in important particulars from those ascribed to that species, 

 and, above all, the time was nearly two months in advance of the 

 proper season for its presence in Northern New York. Moreover, I 

 could find no record of its occurrence in destructive numbers in that 

 portion of our State, which lies outside of the limits of its serious rav- 

 ages in the map given by Dr. Packard.* 



Observed in Jefferson and Oswego Counties. 



On my return from Potsdam, via the Rome, Watertown, andOgdens- 

 burg railroad, the ravages of the caterpillars could be readily detected 

 from the windows of the moving train at various places in St. Lawrence, 

 Jefferson, and Oswego counties, by the brown patches, usually of small 

 extent, on knolls and in the more elevated portions of the pastures 

 bordering the road. Near Richville, several large infested patches were 

 seen. None were noticed at Keen's Station. At about a mile south 

 of Sanford's Corners, in Jefferson county, and continuing for some 

 distance farther, traces of the attack were visible in small browned 

 spots in the pastures. Within about twQ miles of Watertown, it be- 

 came quite noticeable, and for a few miles beyond, several pastures 

 showed the higher portions infested, and a grain field was also believed 

 to be suffering from it. It was again noticed as we approached Adam's 

 Center, and after leaving Sandy Creek, in Oswego county. South of 

 this point, it was suspected in places, but I could not be positive of its 

 presence. 



Additional Collections of Larvae at Potsdam. 

 A number of the larva? which 1 had collected were placed in a box 

 with sod, and brought home with me. They were objects of interest 

 to many of my fellow passengers en route, as the hitherto unrecognized 

 authors of the injuries with which they were familiar. The larvae 

 proved difficult to rear in confinement, and although as near an ap- 

 proach as was convenient to their natural condition was given them, 

 most of them died within a few days ; a few escaped. Two of their 

 cocoons only were subsequently taken from the sod. One of the cater- 



*Mnth Ann. Rept. U. S. Geolog.-Geograph. Surv. Terr., for 1875 (1877), map 8. 



