336 GEO. H. HORN, M. D. 



IPS Fab. 

 Gen. Ins. 1776, p. 23. 

 I. obtusus Say, Bost. Journ. i, p. 168. 

 I. fasciatus Oliv. Ent. ii, 12, p. 7, pi. 2, fig. 13; Say, loc. cit. p. 169. 



quadrisignatus Say, loe. cit. p. 169. 



bipustulatus Mels. Proc. Acad, ii, p. 108. 



sexpustulatus Reitter, Verb, Naturf. Ver. Briinn, xii, p. 161. 

 I. sanguinolentus Oliv. loc. cit. p. 8, pi. 2, fig. 14; Say, loc. cit. p. 169. 



rubromacidatus Reitter, loc. cit. p. 161. 

 I. confluentus Say, Journ. Acad, iii, p. 195. 

 I. vittatus Say, Bost. Journ. i, p. 170. 



Dejeani Kby. Fauna Bor. Am. iv, p. 107, pi. 2, fig. 4. 



sepulchralis Rand. Bost. Journ. ii, p. 19. 

 I. cylindricus Lee. New Species, 1863, p. 64. 



PITYOPHAGTIS Shuck. 



Illust. Brit. Col. p. 25. 

 P. cephalotes Lee. Proc. Acad. 1860, p. 377. 

 P. rufipennis Horn, Trans. Am. Ent. Soe. 1872, p. 146. 

 P. verticalis n. sp. 



RHIZOPHAGINI. 



RHIZOPHAGTJS Hbst. 

 Die Keefer, v, p. 18. 

 Rh. scalpturatus Mann. Bull. Mosc. 1852, ii, p. 362. 

 Rh. cylindricus Lee. Proc. Acad. 1866, p. 377. 

 Rh. dimidiatus Mann. Bull. Mosc. 1843, p. 300. 

 Rh. brunneus Horn, Proc. Am. Philos. Soe. 1878, p. 308. 

 Rh. bipunctatus Say, {Colydium), Journ. Acad, iii, p. 324; Lee. Proc. Acad. 1866, 



p. 377. 

 Rh. approximatus Lee. loe. cit. p. 378. 

 Rh. remotus Lee. loc. cit. p. 378. 

 Rh. minutus Mann. Bull. Mosc. 1853, iii, p. 206. 



Notes on the 9IYCTERID JB and other Heteroniera. 



BY GEORGE H. HORN, M. D, 



A number of specimens of Mycterus having been lately added to 

 my cabinet, some collected by Morrison in western Nevada, and several 

 others from C. F. Gissler from New Mexico, there is now sufficient 

 material to give the species some definite characters. The following 

 table will enable them to be separated in a preliminary way. 

 Thorax broader at base, as wide as the base of the elytra. 



Legs in great part and antennae yellow. 



Posterior legs piceous canescens n. ep. 



All the legs yellow SCaber Hald. 



Legs, autennse and clypeus piceous concolor Lee. 



Thorax not broader at base, narrower than the base of elytra. 



Legs, antennse and mouth yellow quadrlcollis Horn. 



The above color characters although trivial are constant and answer 



