80 Air. Babington on Dromins. 



insect ; I was, however, unable to catch one of these, but have no 

 doubt that this consisted of the clay or earth with which the insect 

 lines its cell, and which presents another proof of the necessity for 

 spines on the fore legs were the theory above mentioned correct. 



On examining some of the specimens which I captured, I found 

 they were males. I had noticed that some of the Odpwri ^ew about 

 the walls very leisurely, and as though they were quite unconcerned 

 in the construction of the nests ; and it is most probable that these 

 were the males. 



I also noticed a great numer of Chrysides flying about the walls 

 and entering into the different holes, evidently for the purpose of de- 

 positing their own eggs in the nests of the Odyneri. They were of 

 different sizes, from the largest to a very small size, and I have little 

 doubt were all varieties of the same species, C. ignita. When on 

 the wing, the antennae are stretched forward, with the extremities 

 bent downwards. I also observed that the Chrysides kept fljdng 

 about in the midst of the Odyneri, which did not seem to be in the 

 least aware of the intentions of their companions, nor to offer them 

 any molestation. 



XIX. Observations on certain Species of the Genus Dro- 

 mius. By Charles C. Babingtox, M.A., F.L.S., Sfc. 



[Read July 7, 1834.] 



Having long turned my attention to the genus Dromius, I now beg 

 leave to submit to the Entomological Society a few observations on 

 some of the species included in it. I have endeavoured more par- 

 ticularly to unravel the confusion that has occurred in the works of 

 our English entomologists amongst the species included by Fabri- 

 cius under the name of Carabus fasciatus. I have also ventured to 

 alter the characters of some of the other species, in the hope of 

 making their specific distinctions more apparent. I must be allowed 

 to add, that the thanks of the Society are due to my friend Mr. 

 Westwood for the drawings which accompany this paper, he having 

 kindly offered to employ his pencil in its illustration. 



St. John's College, Cambridge, 

 June 1, 1834. 



1. D. agilis, Dej. 



Oblongus ; capite thoraceque ferrugineis aut fuscis, thorace qua- 



