1912] Caudell — Grasshopper from Peru 13 



Size moderate. Head as long as the pronotum, the basal part moderately broad 

 but the apical portion from a distance before the eyes as great as the rostrum be- 

 yond them narrow, the rostrum slender and twice as long as the eye; the whole 

 head is distinctly curved, the curvature being gradual and especially noticeable along 

 the front of the head; eyes prominent, about twice as long as broad and situated 

 beyond the middle of the head counting from the clypeal suture to the end of the ros- 

 trum; antermse short, falling distinctly short of the tip of the rostrum. Pronotum 

 nearly straight and shghtly flattened, the prozona distinctly separated from the 

 presternum by a longitudinal ridge; the anterior margin is a little flaring and dis- 

 tinctly elevated, the edge subtuberculate; the mesonotum is wider behind than an- 

 teriorly and elevated into a transverse ridge surmounted by several pointed tuber- 

 cles; metanotum with one moderately elevated tubercle at the middle of the hind 

 margin. Abdomen unarmed, the surface rough and with a dorsal keel; upper valves 

 of ovipositor long, the scoop occupying almost half the entire length; lower valves 

 but httle shorter than the upper ones. Legs moderate, the tarsi furnished with long, 

 slender, apically expanded pads between the claws; hind femora slightly swollen 

 as common in the group and with a very small black short genicular spine on each 

 side above; hind tibiae without apical spines above on the inner margin but with 

 one on the outer, beneath towards the apex with a few minute black spinules. 



General color brown, probably more or less greenish in life. 



Measurements : length, exclusive of head, 60 mm.; head, from lower part of mouth 

 parts to tip of rostrum, 13 mm.; rostrum, beyond eyes, 4 mm.; eye, 2 mm.; anten- 

 nae, 3 mm.; pronotum, 13 mm.; fore femora, 9.5 mm.; middle femora, 8.5 mm.; 

 hind femora, 21.6 mm.; hind tibiae, 22 mm.; Width, head, across the eyes, 3 mm.; 

 thorax, across mesothorax, 5 mm. , 



Type female, Piura, Peru, February, 1911. C. H. T. Townsend, 

 collector. (Catalogue No. 14510, U. S. National Museum.) 



A paratypic series of two males and eight females from the same locality has been 

 examined, representing dates from February to September. The females show very 

 little variation from the type specimen either in color, size or structure but the males 

 have quite a different appearance, being much smaller and with a short rostrum. 

 Structurally the male is similar to the female except the rostrum is much shorter, 

 being shorter than the eye and elongate triangular in shape, the antennae being 

 comparatively longer than in the female, extending beyond the tip of the rostrum. 

 The eyes are fully as large as in the larger female and are thus distinctly more prom- 

 inent than in that sex. The supra -anal plate is triangular and the cerci are simple 

 and extending to the tip of the plate. The subgenital plate is apical and subcon- 

 ical, extending considerably beyond the apex of the supra-anal plate. The male 

 gives the following measurements : length, entire, tip of rostrum to end of abdomen, 

 42 mm.; head, mouth to tip of rostrum, 8 mm.; rostrum, beyond eyes, 1 mm.; eyes, 

 2 mm.; antennae, 2 mm.; pronotum, 9 mm.; fore femora, 7 mm.; middle femora, 

 5.5 mm.; hind femora, 14 mm.; Width, head, across eyes, 3 mm.; thorax, across 

 mesothorax, 3.5 mm. 



Some of these specimens were taken feeding on mesquite bushes. 



