H. C. FALL. 53 



NEW SPECIES OF AMERI<'A\ COEEOFTERA 

 OF THE TRIBE ZY€iOPl]!VI. 



BY H. C. FALL. 



The North American species of Coptvrus (for which the names 

 Cylindrocopturvs and Copturodes liave recently been proposed by 

 Heller and Casey respectively) are for purposes of identification, 

 conveniently separable into two groups, in the first of which the 

 second ventral segment is tuberculate posteriorly, the remaining 

 species showing no trace of these prominences. 



The species of the fiist section, which we may call the mammilla- 

 tus group, are considerably more numerous than has hitherto been 

 supposed, and to mavxmillatns and quadridens, its only representa 

 tives on our present lists, may be added six more species, described 

 in the following pages. Of these eight species, seven are members 

 of the extreme southwestern fauna (Arizona, Southern California 

 and Lower California), one extending its range as far east as Texas, 

 while the eighth is known from Texas only. In 1897* Major 

 Casey published a table of our species of this genus, twenty-one in 

 number, of which thirteen are described therewith as new. 3Iinu- 

 tus Lee. is removed and made the type of a new genus — Zygornicrus, 

 while quadridens and sobrinus described by Horn in 1894 and 1895 

 respectively, appear to have been overlooked. 



Just how many of the forms described by Casey are valid species 

 it is impossible to say ; but judging from my own observations in 

 those species where long series have been available, the minute dif- 

 ferences in bodily form, markings, approximation of the eyes, etc., 

 upon which most of these so-called species are founded, are quite 

 insufficient for their establishment. 



The following notes are suggested by a study of the material at 

 hand. 



G. adspersus Lee. — An abundant species from Kansas and Texas 

 to Southern California, and within somewhat narrow limits exhibit- 

 ing an endless amount of variation in just those details upon which 

 Casey's suturalis and cockerelli are based. In the series of seventy 



* Coleop. Not. vii, Ann. N. Y. Aoiid. Sci., ix, July 1897, p. 669. 



TRANS. AM. ENT. SOC. XXXII. DKCKMBKR. 1905. 



