94 



of Chrysomela or Doryphora. Tlie desciiption of the imaj,^o is a. copy of 

 Say's description of Colaspis pallida, now known as Metachroma pallidum^* 

 and the reason why Dr. Packard considered this as being" identical with 

 Coqnillett's species is not clear nnless he was misled by Mr. Ooquillett's 

 incorrect reference to Say as the author of his species, and the fact that 

 Dr. Packard gives 15 millimetres as the length of the beetle instead of 

 3^0% of an inch adds to the confusion. In the absence of typical speci- 

 mens it is difficult to determine positively Mr. Coqnillett's species, though 

 it is probably Chrysomela pallida of Linnaeus, now known as Gonioctena 

 pallida Linn., which Prof. A. J. Cook reports as injurious to Populus 

 tremtdoides in Michigan. 



(Page 529.) Galeruca sanguinea. — Packard's description of the beetle, 

 according to Mr. Schwarz, can only be referred to Galeruca [Adimonia) 

 cavicollis Lee, which is a common northern species. 



(Page 660.) Micracis suturalis Lee. — Dr. Hamilton's statement that 

 this species, as well as M. aculeatUj requires two years for its develop- 

 ment is of great interest and in contradistinction to j^revious experience 

 regarding' the life duration of Scolytidfe. 



(Page 367.) Apion rostrum. — Mr. Schwarz has already pointed out 

 (Proc. Entom. Soc. Washington, ii, No. 1, 1891, p. 76) that this species 

 should no longer be referred to among the Black Locust insects and 

 that the Apion so common on this tree is A. nigrum Hbst. 



(Page 372.) Spermophagus robinice. — The impossibility of this species 

 breeding in the seeds of Rohinia pseudacaeia has also already been 

 pointed out by Mr. Schwarz (1. c). Eichhoff asserts that there are two 

 annual generations ; while Judeich and Nitsche, the latest authorities, 

 state that the development is not as regular as described by former 

 authors, and that, in some species at least, three generations are dis- 

 tributed over two years. At any rate, no species is said to have a bien- 

 nial generation, and before accepting the corrections of Dr. Hamilton's 

 statement we would suggest the retardation in development caused by 

 indoor breeding. 



The first introduction of Blastophaga psenes into California. — On page 408, 

 volume III, we published some correspondence relative to the desira- 

 bility of importing the European Blastophaga into California for the 

 Smyrna fig. We have recently seen numerous newspaper statements 

 to the effect that such an importation has already been accomplished 

 the iiresent summer, but these accounts have been conflicting in some 

 important iwints and lacking in essential details. We, therefore, take 

 pleas^^re in giving in this number an authoritative account of the suc- 

 cessful experiment from the pen of Mr. Gustav Eisen, of San Francisco, 

 a well-known authority on grape and tig culture, with whom we have 

 corresponded for some time upon this subject. 



* The larvae of the species oi Metaclirom a stiW remaiu imkuo-wu, hut there is every 

 reason to helieve that they are root-feeders and not leaf-feeders. 



