94 TEIITIAKY EHYNCHOPHOROUS CULEOI'TEEA. 



similar; fourth elongated and slender, enlarging apically as usual. Fore 

 coxjc contiguous. Second abdominal segment as long as the third and fourth 

 together, separated from the first by a straight suture. 



The single known sjiccies of this genus comes from Florissant, and 

 closely resembles in general aj)pearance the large fossil (Ueonus, C. exterra- 

 ncn.s, from the same lieds. 



Lacc'opygtis nilesii. 

 PI. I, Figs. 16, 17. 



Head smooth; i-ostrum finely and closely punctate. Prothorax finely 

 and closely rugoso-scabrous, j)rettv uniform over the whole surface. Strire 

 of abdomen with pretty shai-p and deep, more or less longitudinal and con- 

 fluent ])uiicta, the interspaces nearly smooth and fiat. 



Length, 11"'"; In-eadth at base of elytra, 4-25"""; length of elytra, tvS'"'"; 

 scape of antenna.', 2"""; funicle, 3"'"'. 



Florissant, Colorado. (3ne specimen, Nos. (J3S(; and (;;5S7. 



Named for my good friend, the geologist; Prof. W. 11. Niles, of the 

 Massachusetts Institute of Technology. 



Tribe CLEONINI. 



This is one of the most important tribes of ( 'urculionina- in the 

 Eui-opeau Tertiaries, no less than half a dozen genera with twenty-two 

 S])ecies being recognized, and, af, Oeningen at least, tlie species are abun- 

 dant in individuals.. These genera are Khinobatus, recognized at Aix by 

 Hope and Serres; Lixus, with two species, at Oeningen; Rhinocylhis, with 

 one species, at Kott; ( !leonus, with fom-teen species (the largest nundier 

 referred to anv one genus of ( "urculionida^ or, indeed, of Khynchophora, 

 excepting the magazine genus Curculionites), from Oeningen (6), Corent 

 (2), Aix (6), and Brunstatt (one species found also at Aix). It is a far less 

 important ingredient of the Tertiary fauna of North America, and is con- 

 fined to Florissant, Avhere five species occur, all but one also referred to 

 Cleonus, the exception being distinguished as an extinct generic type under 

 the name of Eocleouus. 



