THE CANADIAN ENTOMOLOGIST. 81 



clypeus. Pronotum finely wrinkled, elytra moderately long, widely flaring 

 at the apices, venation obscure at the base, central anteapical cell 

 irregularly reticulate. Male : valve small, triangular ; plates triangular, 

 twice the length of the valve. 



Colour : Deep shining black ; a narrow line on the vertex margin 

 ivory-white, a band across the elytra before the apices, including the apex 

 of clavus and bases of the four apical cells, milky hyaline, this band 

 broken into irregular, more or less oval spots by the black nervures, the 

 largest spot being in the fourth apical cell. Below black,' the legs creamy 

 yellow, dorsal surface of posterior pair lined with black. 



Described from a single male from Arizona. In structure this species 

 seems to be intermediate between the nigrodorsum and vitellina groups, so 

 roes not fit well in either. In colour it is far removed from anything in 

 the genus. 



Eutettix ( Mesamia) animana, n. sp. — Form of Johnsoni neaily, 

 smaller and darker, with the nervures distinct. Length, $ 5 mm. 



Vertex with the disc flat, anterior margin a trifle more curved than 

 the posterior, passage to front more rounding than \w Johnsoni, front as in 

 that species. Elytra long, slender, appressed, venation distinct, the second 

 cross nervure often rudimentary or wanting, central anteapical cell long, 

 constricted in the middle. 



Colour : Vertex creamy yellow, six black dashes in pairs on the 

 anterior margin, pronotum mottled with milky and brown, yellowish in 

 front. Scutellum creamy yellow, transverse impressed line black. Elytra 

 subhyaline, faintly washed with tawny brown, nervures brown, becoming 

 darker on the costa ; a pair of oval, milky-white spots beyond the middle 

 of the clavus. Face dirty yellow, a spot above the antennal ledge and a 

 broken line in front, just beneath the vertex margin, black. 



Genitalia: Male, valve large, triangular, with apex blunt, plates 

 rapidly roundingly narrowing for half their length, then gradually tapering 

 to the rounding points, apical portion convex in both diameters. 



Described from a single male taken at Animas, near Durango, 

 Colorado, by the writer. It is intermediate in appearance between 

 fenestraia and Johnsoni, but quite distinct in structure from either. 



Eutettix (Mesamia) aurata, n. sp. — Form of Johnsoni nearly, 

 smaller and paler. Golden yellow, without definite markings. Length, 



9 4 5 mm - 



Vertex slightly sloping, almost parallel-margined, passage to front 

 slightly rounding. Front broader at base than in Johnsoni. Elytra 



