200 ENTOMOLOGICAL NEWS. [May, '07 



In Proc. Ent. Soc. Phil. 3 : 247, 1864, Walsh makes the follow- 

 ing observation: "I may add here, that as I have recently cap- 

 tured 17 $ $ of Apathus citrinus Smith in company with 4 

 9 9 of A. laboriosus Fabr., and as the 9 of the former and 

 the $ of the latter species appear to be unknown, I incline to 

 believe them to be the sexes of one and the same species." The 

 male resembles Bombus pcrplcxus, and was so determined for 

 me some years ago by an eminent entomologist; it is common 

 in this locality on Epilobium angustifolhim from July 20th to 

 August 1 8th. 



Psithyrus contiguus Cr. differs from the male qf P. labo- 

 riosus only in having the first two instead of the first three seg- 

 ments lemon-yellow. In 1887 (Syn. Hym. N. Am. p. 307), 

 Cresson considered it as only a variety of P. citrinus. After a 

 careful examination of a rather large series of the males of 

 P. laboriosus I find that the third segment may be entirely 

 black, partially black, or that the yellow pubescence may be 

 mixed with black. P. contiguus is doubtless only an instance 

 where the yellow fails entirely ; it has been taken July 30th on 

 Carduus odoratus. 



CERATINIDAE. 

 Geratina dupla Say. 



1837, Ceratina dupla Say, 9 6*, Bost. Jour. Nat. Hist., 1, 387. 

 1864, Ceratina dupla Cr., 9, S, Proc. Ent. Soc. Phil., 2, 389. 



I take this opportunity to place on record the occurrence 

 of C. dupla in this locality. The female has been taken from 

 July 4th to August 21st on the rose, thistle and goldenrod. 

 I have also specimens of both the male and female of this 

 species, and of the male of C. tejonensis Cr. from Elkhart, 

 Indiana, collected by R. J. Weith. 



Melalopha inornata (Neumoegen). — Last September Professor V. A. 

 Clark sent me a number of larvae, which had been found defoliating 

 cottonwood (Populus) trees at Prescott, Arizona. The larvae pupated 

 on the way, and I was not able to determine them until recently, when 

 a couple of fine M. inornata emerged. According to Packard's great 

 work on the Notodontidae, the precise locality of this species was un- 

 known, and nothing had been recorded about its transformations. — 

 T. D. A. Cockerell. 



