23 



and lower portions of sides scabrous with minute pittings. Prothorax 

 uniformly rugose, the crest very high, greatly compressed, anteriorly 

 with four lobes, which have rounded summits, and the first of which 

 projects considerably over the head ; the anterior portion separated 

 from the posterior by a deep but very naiTow transverse excision ; pos- 

 teriorly there is first a single lobe nearly as large as the anterior ones, 

 and behind it much smaller, and generally rather sharply bimucronate 

 elevations ; posterior border of prothorax barely making a right angle ; 

 prosternal spine long, stout, straight, smooth, or slightly punctured, 

 scarcely tapering, the tip bluntly rounded. Tegmina large and 

 broad; wings large, evidently roseate in part, but as the insect has 

 been immersed in alcohol, the colors have fiided. Length of body 4 

 in.; greatest height of pronotal ridge above a line drawn from the top 

 of the head to the hinder tip of the pronotum .4 in.; length of teg- 

 mina 3.6 in. ; of hind tibia3 1.G6 in. One $ from Napo or Maraiion. 

 Another ? from Guayaquil, brought home in a dried state, but almost 

 consumed by insects, seems to belong to this species. So far as can 

 be determined, the wings are colored with a delicate shade of pea 

 green, and the veins in the posterior half are roseate; the pronotal 

 crest is hardly so high or so strongly compressed as in the other speci- 

 men. The head and'ovipositor of still another female, apjjarently of 

 this species, were brought from Napo or Maraiion. 



18. Tropidacris rex nov. gen. et sp. 



Head smooth above, the vertex and a dull reddish band on either 

 side extending to the back of the head from the upper edge of the 

 eye, minutely punctured ; clypeus and labrum dull olivaceous brown, 

 punctured; front rugulose; lateral carinaj prominent, sides of head 

 sparsely furnished with fine hairs. Pronotum luteo-fuscous, scabrous 

 with elevated, rounded, whitish points and abbreviated lines; 

 median carina and posterior border edged with black ; first and 

 second lobes nearly connate, elevated posteriorly more than an- 

 teriorly. Tegmina obscure brownish fuscous, marked with olivaceous 

 on the basal half and with pale luteous apically, the principal veins 

 castaneous, the secondary veins olivaceous and luteo-olivaceous; 

 wings red, marked with a very broad, external, blackish band, and 

 with rows of multitudinous black spots, avoiding the cross-veins, giv- 

 ing the whole wing a tessellated appearance. Hind femora marked 

 within and without with whitish, and furnished with an arcuate band 

 at the tip; spines of hind tibiaj black. Length of body 3.9 in. ; of 

 tegmina 4.34 in.; of hind femora 1.72 in. ; band on the outer edge of 

 the wings .36. broad. One 9. Guayaquil. 



