115 



very base. Mr. Malm also found other passages from one 

 form to the other, tending to establish their specific identity : for 

 him, therefore, these forms are varieties ; while in America, 

 as far at least as my observation goes, the two forms are per- 

 fectly distinct, and thus are either distinct species or dimorphic 

 forms of the same species. 



Although the technical particulars, into which I was obliged 

 to enter, are too dry for the general reader, the interest at- 

 tached to the question thus raised reaches beyond the scope of 

 mere descriptive entomology ; and this may be my excuse for 

 bringing this matter before the readers of Psyche. For more 

 details, I refer to my paper in the above-quoted Proceedings. 



C. Ii. Osten Sacken. 



BIBLIOGRAPHICAL RECORD. • 



Authors and Societies are requested to forward their works to the Edi- 

 tor at the earliest date possible. We ask our readers to inform us of the 

 publication especially of those works which are not generally consulted by 

 entomologists. B. Piclcman Mann. 



(Continued from page 1)2.) 



* 200. The Amer. Nat., vol. ix, as far as p. 576, contains 

 the following, and Nos. 291 to 307. 



a. Notice of LeBaron's Fourth Annual Report on the Noxious and Ben- 

 eficial Insects of the State of Illinois (1874), p. 53 ; of Packard's proposed 

 monograph of Geometrid moths [with request for assistance] (by A. S. Pack- 

 ard, Jr.), pp. 64, 1 79-180, with figures ; of Simon's Les Arachnides de Franec, 

 Tome 1 (1874) (by J. H. Emerton), p. 108-109; of Weyenbergh's *Sobre 

 un Monstruo Dicefalo (Larva de Chironomus) [etc.] [Periddico Zoologieo, 

 Tom. i, p. 50-57, with a figure] (1874), p. 179; of Lubbock's On British 

 Wild Flowers considered in Relation to Insects (1875), p. 245-246; of 

 Scudder's The Distribution of Insects in New Hampshire (1874) p. 309; of 

 Morse's First Book of Zoology (1875), p. 571. b. Note on Telea Polyphemus 

 [corrections of and additions to the article cited in Rec, No. 289] (by A. 

 R. Grote), p. 113-114. c. Obituary notice of Dr. Gideon Linceciun, p. 

 191. (/. Filaria in the House Fly [see Rec, No. 259], p. 24 7. e. Dan- 

 ger of using Paris Green in killing Potato Beetles (by R. U. Piper), p. 

 318. /. Cigars Destroyed by Insects [Catorama simplex, Xyloteres? sp., 

 Calandra oryzae], p. 375. g. Entomological announcements for the De- 

 troit meeting of the A. A. A. S. (Aug. 1875), p. 380. h. Appointment 

 of Prof. Cyrus Thomas as State Entomologist of Illinois, p. 383. t. Fer- 

 tilization of Alpine Flowers by Butterflies, p. 421-422. /. Notice of the 



