■ellow, and extendii 



It is worthy of remark that the species seems to be quite 

 closely related to the European Isosoma linearis. This spe- 

 cies was bred from wheat by Dr. Giraud, who considered it 

 inquilinous in the swellings formed by the Dipterous Octhiphila 

 poly stigma of Meigen. Kaltenbach remarks, however, that al- 

 though obtaining the Isosoma many times from the wheat, he 

 never succeeded in seeing the Dipteron — a very suggestive fact. 



Walker (Notes on Chalcididae, p. 7) states, in reference to the 

 "humeral spot" that although present in all European species of 

 Isosoma, it is absent in American and Australian representatives of 

 the genus. In tritici, however, it is a prominent feature of the 

 markings, and even in hordei it is as evident as upon the European 

 /. vertkellata which we have from Walker himself. — C. V. Riley. 

 * Further notes on the imported Clover-leaf Weevil (Phy- 

 tonomus punctatus). — During a recent visit to our friend, Dr. Le- 

 Conte, in Philadelphia, we learned that he had received a beetle 

 from Canada, as long ago as 1853, from Mr. D'Urban, who was 

 then connected with the geological survey of that country, and 

 another specimen from the late Dr. Melsheimer, from Pennsyl- 

 vania, and that these specimens had been described by him 

 as Phytonomu hpphora, p. 124). He had recog- 



nized, from what we had published in the Naturalist, regarding 



/ '"'■'■ .' ■'■■■:;■■: ■ ■ ■ ', ' : , ' :■■:..'■. 'I; ..■:!'. .- 



ceiving specimens from us he wrote that after a careful examina- 

 tion there was no doubt in his mind as to the identity of the two 

 species. Ph. punctatus, in its typical and most common form, is so 

 easily recognizable by its coloration (the suture and margins of 

 the elytra bein that one would not suspect its 



identity with Ph. opimus from the description of this last. It 

 would appear, however, that opimus is identical with a variety of • 

 Ph. punctatus described by Capiomont (Annates de la Societe 

 Entomologique de France, 1868, p. 123), in which the scales of the 

 elytra are almost uniformly gray, and which is not rare in Eu- 

 rope. The specimen from Melsheimer is, moreover, evidently 

 rubbed. It is a strange coincidence that the numerous specimens 

 we collected on Mr. Snook's farm were all identical in coloration 

 with the typical form, and that just those described by Dr. LeConte 

 as opiums should belong to a comparatively rare form. 



The identity of the two forms once established, it becomes 

 probable that the insect had made a permanent lodgement in this 

 country years ago, and that it was simply overlooked as an injuri- 



