178 



THE AMERICAN ENTOMOLOGIST. 



are all the more remarkable considering the many 

 more important structural differences that exist 

 between them. — Ed.] 



Experience with the Imported Cabbage 

 Worm. — I would like to make observations on 

 the Cabbage Worm this year, and wish to get 

 all the light I can that will help me in my 

 study. I grow from 3,000 to 5,000 early 

 cabbage and from 17,000 to 25,000 late cabbage, 

 each year. During 1878 I had one flat of two 

 acres of extra fine cabbage on a clover and timo- 

 thy sod. Most of it was manured with stable- 

 manure one year, the next year with a coat of 

 (heav}') ashes, and the following winter a heavy 

 coat of Tankage from the slaughter and packing 

 house (heads, feet, etc., steamed). In the spring 

 the sod was plowed and planted to cabbage. 



The result was an immense crop. The butter- 

 flies were very numerous the whole season, and 

 fears were expressed that I should have no cab- 

 bages, on account of the worms. The crop, 

 however, received very slight damage from the 

 worms, except on the outsides of the patch to the 

 sixth or tenth row in. When selling in the Fall, 

 a customer called my attention to the chrysalis 

 on the cabbage, which, upon being opened, 

 showed something that looked like maggots, so 

 that I think there is a parasite at work. 



We have observed that large patches receive 

 much less injury than small ones. It is very 

 rarely that cabbage is raised with any success in 

 small patches. 



I stated, at the Indiana State Horticultural 

 Meeting, that if we manure heavily, cultivate 

 thoroughly, and grow in large patches, we can 

 raise cabbage. 



Gov. Furnas remarked that we ought to keep 

 them off" the outsides of the patches also. This 

 is the point on which I am anxious to be in 

 formed ; hence would like to aid you and the 

 other noble investigators to find out how it is to 

 be done. 



From what I can learn, the hot-water process 

 (lime, pepper, coal-oil,) have proven a failure, at 

 least partially so ; and to catch the worms or but- 

 terfly is a big job. 



In our city an Irishman raised a splendid crop 

 of cabbage by sprinkling the plants with a decoc- 

 tion of May-apple-root. If this last remedy is 

 successful, it is one that can be easily obtained, 

 at least in the West. — H. C. Marsh, Muncie, Ind. 



Seventeen-year Cicada in Pennsylvania.— 



The "seventeen-year locust" has made its ap- 

 pearance here again this year, and as I learn that 

 you have given much attention to the natural 

 history, etc., of this species of the Cicada, you 

 will place me under many obligations b}' giving 

 me a reference to your own publications, and 

 such other information as is attainable on this 

 interesting subject. — F. C. Robinson, M. D., 

 Uniontown, Pa. 



[Our most extended article on this insect ap- 

 peared in the first Report (1868) on the Insects of 

 Missouri. It is hard to obtain, but it is adver- 

 tised by Mr. E. P. Austin, 46 E. Newton St., 

 Boston, Mass.] 



Notes on Gall-making Pemphiginae from 

 France. — I follow closely my Poplar gall-lice. 

 Their eggs hatched about 10 days ago. I put 

 the young ones on little trees planted at my door, 

 to follow them daily. They have already formed 

 their little galls. I had, also, good success in 

 breeding Schizonetira corni, and I am nearly sure, 

 as I know the food-plant (grass roots) of the 

 '' geiiimous" phase, to follow this year the whole 

 cycle of this species. The only form I do not 

 yet know is the "emigrant," and as I have al- 

 ready the stem-mother producing her young ones, 



1 hope in about a fortnight or so to get the winged 

 females. The species, according to its stage of 

 life, has been described under three, and per- 

 haps four names : 



2 Im'i^'rTnt ''^'^' [ =^ "'^'''" ""'''' ^"'^'^ ^^^'°''- '"^- ^/^'")- 



3. Qj^mmom^ A my da fuscicornis Y^o(^\ Pemphigus bo- 



4. V^x^\i&xa. = Schizoneura vagans S yeri Passerini. 



5. Sexuated = Schizoneura corni Kaltenbach (who described 



them as the autumnal young, without knowing their 

 real nature). 



— J. Lichtenstein, Montpellier, France, April 3, 



1880. 



Eggs of Corydalus cornutus. — Hearing some 

 doubt expressed as to the correctness of your 

 conclusions as to the eggs and early development 

 of Coi-ydalits as set forth in your paper before the 

 Am. Ass. for Adv. of Science, I think you will 

 be glad to know that I have observed the same 

 on specimens I collected and developed for a 

 short time here last summer, corroborating your 

 work, except that here the egg-masses are de- 

 posited on the vertical sun-exposed faces of rocks 

 over the water instead of on leaves. The hatch- 

 ing-dates here were during the last half of 

 August. — W, S. Barnard, Ithaca, N. Y. 



[Those who have read the abstract of our second 

 paper on this subject, read at the St. Louis (1878) 

 Meeting of the Association, will not longer ques- 

 tion the accuracy of our conclusions.] 



Pyrethrum for Grain Weevils.— Adjacent to 

 my office is a warehouse filled with wheat. This 

 spring the Grain Weevils therein commenced to 

 migrate, and infested my premises. We, there- 

 fore, sprinkled some Buhach or Insect-powder 

 over the grain, and swept the weevils up literally 

 by the quart. Those which emigrated to my 

 office were also treated with a sprinkling, and it 

 cut short their earthly career. * * * 



I am convinced that a judicious use of this 

 powder on board each grain-ship would save an 

 immense amount of loss. I have seen it used in 

 one of the largest mills in the State, and it brought 

 cockroaches out in quantities which astonished 

 even the miller, who little thought he had so 

 many on his premises. A clergyman, a friend 



