28^ THE CANADIAN ENTOMOLOGIST. 



B. Tongue narrow and more or less elongated, usually quite long. 

 (Panurginse). 



1. Marginal cell produced, tapering to a point, not appendiculate. 



a. Body C^//^/<?j'-shaped, abdomen with hair-bands . Rhophites, Spin. 



b. Body Z?a//<:/«^-shaped, abdomen without well-formed hair- 

 bands Halictoides. Nyl. 



2. Marginal cell truncate at tip, usually appendiculate. 



a. Body C(7//^/«-shaped, abdomen usually with hair- 

 bands Calliopsis, Sm. 



b. Body Z^//V/«^- shaped, abdomen without well-fotmed hair- 

 bands Fanurginus, Nyl. 



The genera under B have but two submarginal cells ; those under A 

 all have a marginal tapering to a point. I give the subfamilies as I find 

 them, but it seems at least probable that the form of the tongue is an 

 adaptive character, not to be relied upon for separating groups higher 

 than genera. The Panurginse, notwithstanding the tongue, appear to 

 be certainly Andrenidse. 



Parandrena. 



The type is P. aiidrenoides, a spring-flying species. The smaller 

 stigma of the autumnal " Panurgus " pectidis, rhodoceratus and olivice is 

 paralleled in Andrena by that of A. pulchella, also an autumnal insect. 

 For the present I would place the three species of '■' Panurgus'''' named 

 in Parandrena, with the reservation that they may hereafter need to be 

 separated from it. They are much nearer to Rhophites than to Panurgus. 



HemiJialictus. 



The type is H. lustrans, described as Panurgus. This looks not 

 unlike the European Halictoides, but differs in the tongue, which in 

 Halictoides is very narrow, and by the strongly bent basal nervure and 

 the third discoidal cell considerably narrowed above. 



Rli op kites. 

 Mr. Friese sends me R. quinquespinosus, Spin., and R. canus, Ev. 

 These are what we should call Panurgus, and if there are in our fauna 

 any " Panurgus " with the pointed marginal cell, of fairly robust shape, 

 with abdominal hair-bands, these will belong to RopJiites, provided they 

 have the narrow elongated tongue which separates them from Parandrena. 

 The stigma of Rophites is small, as in the autumnal species provisionally 

 referred above to Parandre?ia. 



