2G4 THE CANADIAN ENTOMOLOGIST. 



by a careful examination may be seen a row of tine punctures next the 

 margin, separated from the general surface of the elytron by a more or 

 less sharp line, while in vitellince this row of punctures is more or less 

 obsolete and not sharply separated from the confused punctuation of the 

 contiguous surface. A little faith is sometimes required to see these dif- 

 ferences. It would be useless to enter into more minute details, as any- 

 one who cannot identify his insects by those given would probably fail 

 with both species in hand. If vitellince occurs in North America, the 

 above may be sufficient to cause its recognition. 



P. intersiitialis, Mann. — This species was described from the Yukon, 

 from a single example, and is usually set down by American writers as a 

 synonym of vulgatissima, the type being considered as perhaps deformed. 

 The description seems, however, to forbid such an assignment, as, in 

 addition to the usual strial arrangement; the whole of the elytral surface 

 is represented as deeply and coarsely punctured. I have examined many 

 specimens of the American and European vulgatissima, and likewise of 

 the European vitellines and eavi/rons, in all of which the intervals are 

 practically impunctate, and show no tendency to become punctured in 

 any degree, Interstitialis by description is a valid species. 



Amblyderus ( Anthicus ) pallens, Lee, was described from examples 

 taken on the shores of Lake Superior ; a form taken on the sea coast of 

 New Jersey, and southward, by others as well as myself, seemed from 

 description to be the same, but it is only recently that I have been able 

 to be assured of their identity by direct comparison of specimens. Mr. 

 Wickham has kindly sent four examples from the southern shore of Lake 

 Superior, between which and those from the Atlantic Coast there are 

 seemingly no differences except those of individuality. Of those sent by 

 Mr. Wickham, one is entirely pallid throughout, one has the abdomen 

 partly fuscous, another entirely so, and the fouith has in addition the 

 elytra pale livid, indicating that there may be a melanotic form. Of six 

 sea-shore forms, two are entirely pallid, the other four have the abdomen 

 infuscate and one of them also the elytra slightly. Inasmuch as the 

 original description is out of print, its reproduction may be useful on 

 account of the redescription by Capt. Casey in his recent revision of the 

 Anthicidce being so seriously defective as to be misleading, describing the 

 entirely pale and exceptional form not mentioned by Dr. Leconte, but 

 giving no hint of the common form with the fuscous abdomen — Leconte's 

 species. 



