244 



brachypterous form only in having a blackish oblong spot within the basal 

 angles of the scutellum. The elytra are long as in the female but of a pale 

 smoky brown with darker nervures. 



LACCOCERA ? OBESA, n. sp. 



Delphacinus obesa, Gillette & Baker, Hemip. of Colorado, p. 69, 1895. 



Macropterous female: Allied to vittipennis but broader and stouter 

 with the head narrower than the thorax, the eyes smaller and the elytra 

 shorter and broader at apex. 



Vertex nearly square, broadly rounded before, not obviously five angled ; 

 basal fovcU shorter than in zonatus, more as in genus Delphax, reaching 

 only to the middle, before forming two middle keels which run nearly par- 

 allel over the apex of the head and unite abruptly to form the middle keel 

 of the front. These carinse form three oblong nearly equal compartments 

 on the apical half of the vertex. Hind edge of the pronotu'm broadly sinu- 

 ately excavated across the middle, including a slight median emargination ; 

 the fore and hind margins nearly parallel. 



Color soiled yellowish white, fulvous on the scutellum. Eyes, clypeus, 

 its carina; excepted, and the disc of the pleural pieces blackish. Tergum 

 marked as in the female of zonatus. Venter fulvous dotted with brown ; 

 oviduct brown, shorter than the pygofers, the latter pale with a brown dot 

 at the inner apical angle. Length 31^ m. m. 



Colorado. Described from a single female specimen received from 

 Prof. C. P. Gillette. This is a stouter species than zonatus with which it 

 agrees closely in color and markings. It has the same arrangement of pus- 

 tules on the head and pronotum, but the carina on the vertex are differently 

 placed. 



GENUS STOBERA, Stal. 



Berliner Ent. Zeits., Ill, p. 327, 1859. 



"Caput thorace nonnihil angustius, truncatum ; vertice transverso; 

 fronte elongata, subparellela, marginibus carinatis, medio carina percur- 

 rente. basi ipsa furcata mstructa; genis obliquis, triangularibus, haud para- 

 lellis; clypeo tricarinato. Antennae compressae, capiti transverso cum ocu- 

 lis vix aequilongfe, articulo ultimo penultimolongiore. Thorax brevis, pos- 

 tice late emarginatus, tricarinatus, carinis lateralibus posterius leviter 

 divergentibus. Tegmina abdomen multo superantia. Tibiae posticae bispi- 

 nosae. Amblycoti affine genus." 



The above is a copy of Stal's description. The characters given below 

 were prepared by me before I had discovered that this genus had already 

 been defined. 



Allied to Conomelus Fieb. Head considerably narrower than the pro- 

 notum. Vertex short, the carinas sharp and prominent over the apex of 

 the head. Front narrow, ligulate, but little or not at all narrowed at base, 

 sides nearly rectilinear, carinae prominent. Cheeks broad triangular, the 

 outer edge a little reflexed. Clypeus long, acutely triangular, distinctly 

 tricarinate. Antennae stout, reaching onto the base of the clypeus; first 



