Dec, I9I7.] Gibson-Wells: The Genus Ophiderma. 201 



Ophiderma fraterna new species. 



Head broad, triangular, bright yellow, eyes prominent ; ocelli brown, 

 equidistant from each other and the eyes. Clypeus broad only slightly if at 

 all produced beyond line of cheeks ; longitudinal lines of clypeus brown or 

 black ; two minute points on base of vertex of head above ocelli ; callosities 

 black. Lateral margin of metopidium straight above humerals when viewed 

 from front. Median carina smooth ; pronotum densely punctate ; on each 

 side of prothorax a bright yellow band continuing from front of metopidium 

 to two thirds length of pronotum and enclosing an oblong dark area ; band 

 becomes broader when it attains lower margin of pronotum. Apical trans- 

 verse band of same color near apex of pronotum. Tegmina with large brown 

 area at base and brown at apex, elsewhere clear. Abdomen dark brown or 

 black, with yellow on edges of segments, tip light brown ; femora, tibix 

 and tarsi yellow. Length 7 mm. 



Described from three male specimens in collection of U. S. Na- 

 tional Museimi from Illinois, New York and Florida. 



This species may be readily separated from O. salamandra Fairm. 

 by the bright yellow markings on the pronotum. 



Ophiderma nigrocincta Van D. 



Ophiderma nigrocincta Van D., Bull. Buffalo Soc. Nat. Sci., Vol. IX, p. 

 loi, 1908. 



There is one male specimen in the collection of the U. S. National 

 Museum from Arizona which in general answers quite well the original 

 description made from one female taken in Colorado. This specimen 

 is marked on the pronotum with three transverse white bands, the 

 middle one being broad and extending through elytra and abdomen. 

 The callosities of male are the same color as face. Clypeus promi- 

 nently produced. This is a small species. 



Ophiderma compacta new species. 



Head grayish brown; clypeus broad, distinctly produced beyond line of 

 face, longitudinal lines of brown ; ocelli equidistant from each other and 

 from eyes ; two black spots on base of vertex of head ; eyes brown or black ; 

 callosities black becoming rufous in older specimens. Median carina smooth ; 

 prothorax gray or grayish brown becoming lighter ju,st beyond middle 

 toward apex being transversed by a white band ; apical half brown with 

 white transverse apical band more distinct in male than in female. Prono- 

 tum hairy, broad extending beyond abdomen and almost to the apex of 

 tegmina in female. Elytra brown at base and apex, elsewhere clear. Ab- 

 domen dark brown or black in male, lighter in female. Feet and legs black 

 or brown with lighter markings. Length 5-55^ mm. Male smaller and 

 generally darker than female. 



