192 FOETY'-SECOND REPORT ON TEE STATE MuSEUM. [50] 



remarks made on page 188 on an apjmrent habit of the larva of 

 inclosing itself in its cocoon prematurely, under certain conditions. 

 Examples sent to me by mail, and, of course, subjected to unnatural 

 treatment in their boxing, etc., have made their cocoons as early as in 

 August. My notes — all the dates bearing on this point that I have — 

 show the following, which will be seen to be quite in contrast with 

 Miss Morton's experience with her carefully matured larvse : 



Larva, August 4, on pear; cocoon made August G. 



Larva, August 22, on apple; cocoon made Avigust 24. 



Larva, September 2, on hazel; cocoon made September 16. 



Larva, September 3, on pear (fruit); cocoon made September 5. 



Larva, September 4, on crab-apple; cocoon made September 7. 



Larva, September 9, on pear; cocoon made September 12. 



Parasites. 

 Miss Morton has sent me a Tachina fly which she has bred from 

 pithecium which I can not separate from unnamed examples in my 

 collection, marked " bred from Limacodes sp ?" The slug caterjnllars 

 are apparently very liable to Tachina attack. Miss Morton feelingly 

 remarks, in Avriting of the example sent: "It looks to me like all the 

 grey Dipterse infesting the Limacodes which so often render a sum- 

 mer's hard work abortive by their emergence from the empty skin of 

 the mature larva just as it is about to form its cocoon." 



Anisota senatoria (Sm.-Abb.). 



The Yellow-striijed Oak Caterpillar : The Senatorial Oak Moth. 



(Ord. Lepidoptera: Fam. BoMBYCiciE.) 



Smith-Abbot: Lepidop. Ins. Geo., ii, 1797, p. 113, pi. 57 (larva, pupa, ^ & 



Q imago). As Phakena. 

 Hubner: Verz. Schmett., 1816, p. 193, No. 1979 (as Anisota). 

 Harris: An. -PI. Mass., 1835, p. 72; Rept. Ins. Mass., 1841, p. 292 ; Ins. New 



Eng.. 1852, p. 312; Ins. Inj. Veg., 1862, p. 405-6, f. 198 (larva), 199 



(pupa), 200 (9 imago); Entomolog. Corr., 1869, p. 298, pi. 2, f. 9 



(larva), pi. 4. f. 12 (pupa). As Drijocninpa. 

 Walker: Cat. Lep. Brit. Mus., 1855, Pt. VI. 

 Fitch: 5th Rept. Ins. N. Y. (3d. -5th Repts.), 1859, p. 43. 

 Morris: Synop. Lep. N. Amer., 1862, p. 231. 

 Packard : in Proc. Ent. Soc. Phila., iii, 1864, p. 385 ; in Bull. No. 7, U. S. Ent. 



Comm., 1881, p. 45 (habits, etc.). 

 Grote: in Proc. Ent. Soc. Phila., iii. 1864, p. 93 (restores Anisota Hubner); 



in Proc. Amer. Philosoph. Soc, xiv, 1874, p. 260 (place in classif.). 

 Walsh: in Pract. Entomol., ii, 1866, p. 7 (in Wisconsin). 

 Glover : in Rept. Comra. Agricul. for 1870, p. 83, f. 43 (larva). 



