1-i-i Mr. Crotcli'fci Descriptiojis uf 



ISCHYEUS, Lac. Mon. Erot., p. 8'J (1842). 

 (Type Erot. quadripundatus, Oliv.) 



This genus, first indicated by Ohevrolat in 183G, is now 

 tolerably lioniogeneons, only the first group being at all 

 exceptional. Tiie coarsely granulated eyes distinguish it 

 from all the other New World genera except UjJijtus.'^' The 

 species are numerous and very closely allied. The thorax 

 is rarely margined behind except just round the posterior 

 angles. 



9. Ischyrus degantulus, Lac. Mon. Erot., p. 121 (1842). 

 Coincides with my specimens from New Granada. 



10. Ischyrua gra2)]dcus, Lac. Mon. Erot., p. 125 (1842). 



These, as well as the Mexican exponents of this species, 

 appear to be a southern form of I. quadriimndaius with 

 the head more or less rufous. 



11. Isdiyrus tripundatus, sp. nov. 



Oblongus, postice angustior, capite nigro, parce sat pro- 

 funde punctato, thorace rufo-testaceo, lateribus antice 

 rotundatis, punctis discoidalibus 3 nigris ; scutello nigro 

 Levi ; ely tris fulvo-testaceis, vix punctulatis, leviter punc- 

 tato-striatis, fasciis 2 comnumibus nigris, postice denticulatis 

 (1 basali, 1 pone medium) margineni baud attingentibus ; 

 corpore subtus punctulato, rutb-testaceo, epipleuris elytro- 

 rum, lateribus pectoris, pedibusque nigris. L. c. 3^ lin. 



MYCOTIIETUS, Lac. Mon. Erot., p. 132 (1842). 

 (Type - ?) 

 Distinct by the pentagonal or rounded mentum, antennii3 



* Ejnjtus, Dt'j. Cat. Ed. 3, p. 452 (1837) [Type Erot. violacms, Sturm. 

 Cat., p. 82, Table iv., lig. 38 (182G)] = Uucyanm, Hope, KfV. Zool, 1841, 

 p. 113.— Lac. Mon, Eiot., p. 11)4 (1842). 



