1895. PROCEEDINGS OF THE NATIONAL MUSEUM. 609 



Genus PITYOPHTHORUS, Eichhoff. 



Of the species sent by you, P. pitlhis, Ziiiiinennaiiu. is synonymous 

 with P. crihripcnnis, Eichlioft"; P. hiriicep.s, Le Contc. is extremely close 

 to and ])erliai)s identical with P. j)iilc}t<lli(.s, EichholT; 7*. roncentralis 

 from Florida is correctly determined and does not differ in the least from 

 my typical specimen from Cuba; 7*. (iiurrlpenla, Schwarz, is identical 

 with my P. pruinosus. 



[Tyi»i('al specimens of PityophtJioni.s in/an.s, Eichhoff, prove to be 

 identical with P. pulx'rnhis^ Le Conte.] 



Genus PITYOGENES, Bedel. 



Tomicus spxir.sHs, Le Conte, T. pkujiutus., Le Conte, and T.carinulatus, 

 Le Conte, as well as their European allies, T. hidentatus and T. chalcogra- 

 phxs, belong to Bedel's recently established genus Pityogeniis. My 

 statement' that T. chalcor/rapJi'js occurs also in ^S'orth America is erro- 

 neous, since a renewed examination shows that the specimen is a female 

 of T. sjno'.sus, Le Conte, which has a most deceptive lesemblance to T. 

 ehaJco(jr(q)]ius. T. phujialHs, Le Conte, is a good si)ecies and not iden- 

 tical with hidentatus, Herbst, as erroneously indicated l)y me.^ 



[To Pifi/ogenes also belongs Pityophihorus fossifrous, Le Conte, which 

 is evidently the female of a species, the male of which has hooked pro- 

 cesses at the elytral declivity. From specimens recently submitted 

 to me by Prof. A. D. Hopkins, I find that Xyleborus pyunctipcnniSj 

 Le Conte, is also referable to Pityoyeiies, and that Tomicus balsameus, 

 Le Conte, is the male of the same species.] 



Genus XYLEBORUS, Eichhoff. 



There can not be the slightest doubt that the species you sent me as 

 Xylehorns .tylographus, Say, and of which I had previously seen unde- 

 termined North American si^ecimens, is identical with the Euroj^ean A'. 

 saxeseni, Eatzeburg. It is certainly remarkable that this synonymy 

 comes to light only now, and that Eatzeburg's name has to be sup- 

 pressed after it had been in use for more than fifty years. A', jyini^ 

 Eichhoff, considered by Le Conte as synonymous with A. xylodraphus, 

 must now again take its rank as a distinct species. What A. puhcscens, 

 Zimmermann, is, remains for the present unknown to me, since among 

 the specimens which you send me as such I believe 1 can distinguish 

 three species, viz, A', ajfiiiis, Eichhoff, A', inerniis, Eichhoff, and a third 

 one. These species of Xyleborus are extremely diflicult to distinguish 

 in the female sex, and I have no doubt that in this particular group still 

 other si)ecies will be distinguished as soon as the males are discovered. 

 These are wingless and can only be found within the galleries duriiig 

 the winter or in midsummer; very rarely also they may be seen near 



'Die Enrop. Borkenkafer, p. 23. 

 -Katio Tom., p. 280. 

 Proc. N. M. 05 39 



