NATURAL HISTORY SOCIETY OF GLASGOW. 129 



that it has likenesses and affinities with various widely separated 

 genera, and the authors above named have apparently been 

 guided in their conclusions by relying upon the relative importance 

 of one organ more than another, or it may be through mere 

 superficial resemblances. It is, indeed, highly probable that it is 

 a very ancient genus. The general resemblance, in form and 

 coloration, of the species to such very different forms as Hylotoma 

 rosae, etc., is very curious. Another interesting fact is the very 

 wide distribution of the species over the old world. Looking at 

 the matter in all its aspects, and taking also into account the form 

 and habits of the larva, I cannot help thinking that Hartig has 

 put the genus in a more natural position than the other 

 authorities. 



The species may be separated as follows : — 



A. Mesonotum smooth, shining, glabrous; breast rufous, glahricollis. 



B. Mesonotum densely pubescent. 



a. Mesonotum more or less luteous. 



Apex of tibiae and tarsi annulated with black. spinarum. 



Tibiae partly, and tarsi totally black. tibialis. 



h. Mesonotum black. 



1. Tarsi annulated with black. 



a. Mouth white. 



Pronotum and tegulae luteous. rosae. 



Pronotum and tegulae black. haematopus. 



b. Mouth luteous. anmdata. 



2. Tarsi not annulated. 



Tibiae partly, and tarsi quite black, higens, 



1. Glabricollis, Thomson.* 



This species differs from sjnnarum, by the black, smooth, almost 

 glabrous mesonotum ; from rosae, by the non-pubescent mesonotum, 

 larger size, and by the breast being always luteous. I have 

 hitherto confounded it with rosae, and it was its larva, and not 

 that of rosae, which I described under the last mentioned name in 

 the " Scottish Naturalist," vol. ii., p. 197-199. The larva does 

 not differ from that of sjnnarum, and like it feeds on cruciferous 

 plants, but does not, so far as I know, frequent the turnip. It 

 has occurred in Clydesdale, Berwickshire (Hardy), and Aberdeen 

 (Trail). From England I have seen a specimen, taken by Mr 

 J. G. Marsh (captured in the London districts, I believe), and this 

 specimen offers the peculiarity of having the scutellum luteous. 



* Hymen. Scand. i., 171. 

 VOL. IIL I 



