18 Annals of the Carnegie Museum. 



ruginous, to dull fuscous. Upper edges of sides of pronotum just 

 below the carinae, passing to outer margins of disk on hind lobe black 

 in most instances, absent in some. Tegmina in females faintly 

 maculate along disk and occasionally also on dorsal field; in the males 

 only along disk and apically. Sometimes the dorsum from fastigium 

 to hind edge of pronotum provided with a narrower or broader pallid 

 band, in some individuals continuing as a pallid coloring of the dorsal 

 area of the tegmina. 



Length of body, d\ 15 nun., 9 , 22-24 mm.; of pronotum, cf. 3.35 

 mm., 9, 4 mm.; of tegmina, cf, 13.5 mm., 9, 14-15 mm.; of hind 

 femora, d\ 10.5 mm., 9 , 15 mm - 



Habitat. — Rio de Janeiro, September to November, H. H. Smith. 



21. Orphulella grossa sp. now 



Reminding one at first glance of 0. crassa, to which it bears a general 

 resemblance in form and size. It may, however, be readily separated 

 from that insect by its having the lateral carinae of the pronotum in 

 advance of the principal transverse sulcus arcuate, instead of parallel; 

 in having the two lobes of the pronotum equal in length; the antennae 

 slender and filiform, instead of heavy and flattened basally; and by the 

 normally rounded apices of the tegmina, which project beyond the 

 tip of the abdomen. 



Head moderately robust, a little wider than the anterior edge of 

 the slightly compressed and constricted pronotum; fastigium about 

 as long as broad, its antero-lateral margins meeting at a right angle, 

 and bordered behind by a shallow lunate depression; lateral foveolae 

 elongate, acutely triangular. Face less strongly oblique than in the 

 same sex of 0. crassa, the frontal costa evenly divergent below, con- 

 tinuous to the base of the clypeus, scarcely sulcate, but more or less 

 punctulate above and below. Pronotum with the two lobes of about 

 equal length, the lateral carinae arcuate and twice interrupted by the 

 transverse grooves in advance of the principal sulcus; the lateral lobes 

 about as long as high, their lower edge rather strongly sinuose; hind 

 margin widely angulated, the apex somewhat rounded. Tegmina 

 normal, their apex rounded and extending beyond the tip of abdomen 

 and knees. Hind femora of normal length. Interspace between the 

 mesosternal lobes about as long as broad, the inner edge of the lobes 

 themselves evenly rounded. 



Length of body, 9 , 22 mm., of pronotum, 4.5 mm., of tegmina, 19 

 mm., of hind femora, 12 mm. 



