94 
2 
of Chrysomela or Doryphora.. The description of the imago 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 
Coquillett’s species is not clear unless he was misled by Mr. Coquillett’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 
7% of an inch adds to the confusion. In the absence of typical speci- 
mens it is difficult to determine positively Mr. Coquillett’s species, though 
it is probably Chrysomela pallida of Linneeus, now known as Gonioctena 
pallida Linn., which Prof. A. J. Cook reports as injurious to Populus 
tremuloides in Michigan. 
(Page 529.) Galeruca sanguinea.—Packard’s description of the beetle, 
according to Mr. Schwarz, can only be referred to Galeruca (Adimonia) 
cavicollis Lec., which is a common northern species. 
(Page 660.) Micracis suturalis Lec.—Dr. Hamilton’s statement that 
this species, as well as M. aculeata, requires two years for its develop- 
ment is of great interest and in contradistinction to previous experience 
regarding the life duration of Scolytide. 
(Page 367.) Apion rostrum.—Mr. Schwarz has already pointed out 
(Proc. Entom. Soc. Washington, 11, 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 robinie.—The impossibility of this species 
breeding in the seeds of Robinia pseudacacia has also already been 
pointed out by Mr. Schwarz (1. ¢.). 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 ill, 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 present summer, but these accounts have been conflicting in some 
important points and lacking in essential details. We, therefore, take 
pleasure 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 fig culture, with whom we have 
corresponded for some time upon this subject. 
~ The larve of the species of Wetachroma still remain unknown, but there is every | 
reason to believe that they are root-feeders and not leaf-feeders. 
