44. THE CANADIAN ENTOMOLOGIST. 



I will add that there was no possibility of a mistake, as I had but one other 

 Luna larva, (and it had spun up before I found the infested. one, and like it 

 produced a perfect moth, though not so large as that from the infested one), 

 and these were the only two Luna larvae and the only two Luna moths that 

 I ever saw. I still have both. The infested larva was the last to spin up, but 

 the first to emerge. Can you tell me what became of the Tachinse ? 



V. T. Chambers, Cnvivyton, Ky. 



P. S — Since the above was written, I have referred to my journal, and find 

 that the first larva was taken on Sept. 2 ; the infested one on Sept. 4. The 

 latter came out on May 6th, and the former on May 15th. Otherwise the 

 facts are as above stated. — V. T. C. 



NOTES ON SOME OF THE COMMON SPECIES OF CARABINE, 

 FOUND IN TEMPERATE NORTH AMERICA. 



BY PHILIP S. SPRAGUE, BOSTON, MASS. 



The many difficulties encountered by those entomologists who have neither 

 time nor access to scientific libraries, but who wish to be more than mere 

 collectors, have induced me to try and assist them, more especially those' who 

 are to some extent advanced enough to distinguish many of the families and 

 genera of the Coleoptera I also hope to be of some assistance to those 

 beginners who have a true love of nature and her works. Yet were I to 

 write for this class only, the Entomologist would be more than full for years. 

 My first attempt will be to help the reader to classify some of the more com- 

 mon genera of Carol idee, after which I will refer to the species, pointing out" 

 their particular differences by comparative descriptions. I shall endeavor to 

 express myself in familiar phraseology, rather than in technical. To those 

 who have not these instruments, a convenient magnifying glass, Le Conte's 

 1 Classification and List of Coleoptera of N. A.,' are absolutely necessary. (1). 

 I have had prepared a highly magnified drawing of one of our common sum- 

 mer beetles, Hurpalus calig ino&us, to plainly represent all those parts which 

 are of the most importance in classification, the names should be printed with 

 a pen on their appropriate parts, very plainly that you may know them at a 

 glance. You will find it of the greatest advantage to dissect a number of 

 beetles, of the same and allied genera comparing the different parts with each 

 oilier and with the cut, and making drawings of the same, thus familiarising 

 yourself with the form and parts pertaining to the subject; if you are a new 

 beginner, or have never done this, it is absolutely necessary, and you will be 

 surprised to find how much you have learned with so little trouble (2). 



The cut only represents the ventral or under surface. When viewed from 

 above you will find at the extreme anterior part of the head, between the 



