— 52 — 



Book Notices. 



Revision of the Species of Lachnosterna of America North of Mexico, by 

 George H. Horn, M. D., Trans. Am. Ent. Soc, 18S7, vol. 14, pp. 209—296, 

 I plate. 



This paper by Dr. Horn is a very timely one. The species o'i Lach- 

 nosterna had become hopelessly mixed in collections, and it was unsafe 

 to rely upon determinations anywhere. The local abundance of some 

 species — their variability in color and size, and the similarity of the species 

 proved a fertile source of confusion. A few species are well marked, and 

 recognizable under all circumstances- — leaving these all guides were lost. 

 Dr. Horn's paper makes it possible to move more safely. Still withal 

 the group is not an easy one, and requires tact as well as fair series to 

 make identification certain. As in so many cases, the male characters 

 afford good bases for specific distinction while the females often closely 

 resemble each other. Dr. Horn as usual gives very good synoptic tables 

 and in all cases sufficiently minute descriptions. In Lachnosterna as 

 here used, Dr. Horn includes Trichestes Erichs., Ancylonycha Blanch., 

 Tostegoptera ^XzY^ch.. , Eugastra Lee, Endrosa 'L&c. , ^x\(\ Gynnis "Lqc. 

 The number of species is increased to 81, and for the benefit of those 

 who may not have access to Dr. Horn's paper, and as a guide to an ar- 

 rangement of the species, we give a copy of the list of species. 



LACHNOSTERNA, Hope. 

 GROUP I. 



1. lanceolata Say. Kansas to Te.Kas. 



GROUP II. 



2. cribrosa Lee. Texas. 



ventricosa Lee. 



3. 3equalis Lee. Texas. 



4. farcta Lee. Texask 



GROUP III. 



5. torta Lee. Texas. 



6. hamata Horn. Texas. 



GROUP IV. 



7. latifrons Lee. Fla. 



8. generosa Horn. Texas. 



9. pra^termissa Horn. La. 



10. prununculina Burm. Ga. , Fla, 



eerasina Lee. 



11. ^\dhexv\m^ Blanch. Pa. to Fla. 



12. ephilida Say. Can. to Fla., Tex. 



uniformis Blanch. 

 burmeisteri Lee. 



