Vlll MONTHLY PROCEEDINGS. 



On the whole the two tauiias, Boreal and Central America, seem 

 to be quite distinctly marked, more so than would be expected from 

 the topoo;raphy of the greater part of the border zone as there are 

 no natural obstructions — as high mountains or wide seas — in the way 

 of a free intermingling of species. 



These remarks, which must be restricted in their application to the 

 Coleoptera alone, express the views entertained by Dr. LeConte and 

 explained in his notes on the first series of Coleoptera collected by 

 Xantus in the Peninsula of California. Mr. H. W. Bates seems to 

 have adopted what is practically the same idea, as I have gathered 

 from his introduction to vol. i, and isolated expressions more particu- 

 larly in the Appendix. 



To students of the Coleopterous fauna of the more northern por- 

 tions of the continent the work is indispensable, and will doubtless 

 diminish in future the duplication of descriptions of species on the 

 two sides of the line. It is only to be regretted that the authors 

 have satisfied themselves with cataloguing very many of the species, 

 giving, often, too abundant citations of habitat in place of a fcAV lines 

 of description, which would have been of far greater utility. 



The first volume of Coleoptera deals with the Cicindelidse and 

 Carabidae, and is from the hands of Mr. H. W. Bates. It contains 

 316 pages and 13 plates, on which are figures of 323 species and 

 varieties. Publication of the volume began in October, 1881, and 

 finished in August, 1884. In going over the pages a few notes have 

 been made, which have been thought of sufficient interest to give : 



Iresia boucardi Chev., p. 17. A male of this species taken at Cor- 

 dova by Jose Nieto, and now in my possession, is entirely rufo-testa- 

 ceous beneath. The male was unknown to Mr. Bates, and it is prob- 

 able that he is entirely correct in separating Iresia pulchra as distinct. 



Calosoma peregriuator Guer. As this species has C. carbonafum 

 Lee. for a synonym, the remarks concerning prominem and hujubre 

 Lee, should be disregarded. 



Micrixys distinctus Lee. This species should be added on p. 41. 

 I have seen a specimen in the possession of Mr. Flohr, collected (I 

 think in Coahuila) in Mexican territory. 



Dicaelus flohri Bates, p. 49. Mr. Bates is correct in referring 

 (on p. 269) this species to lcevipen7iis Lee. 



A second species, D. costatm Lee, occurs in Mexico (see preceding 

 note). 



