1913.] NATURAL SCIENCES OF PHILADELPHIA. 89 



Port of Spain, Trinidad. (Ernst T. Giers.) [U. S. N. M.] Two 9 . 



Colon, Panama. (Wm. Lill.) [U. S. N. M.] One 9 . 



This species has a broad blackish margin to the wings, the proximal 

 portion of the margin being colored the same as the peripheral 

 section, while the caudal tibiae are chiefly glaucous-green. True 

 Tropidacris dux (Drury)'' from the Bay of Honduras appears to be 

 the species which Pictet and Saussure have described as Tropi- 

 daa-is cardinalis, as shown by the general reddish color of the limbs 

 and narrow black margin of the wings, both features distinctly 

 indicated in Drury's description and figure. 



It would seem, from our present knowledge of the dux-latreillei 

 group that there is a regular increase southward in the width of the 

 blackish margin to the wings, the individuals from the northern 

 section of the range of the group have the marginal band ver}'^ 

 narrow, those from the southern part of the range having it wide. 

 The future may shoAV the necessity of considering the various species 

 allied to dux as mere geographic races. 



Tropidacris cristata (Linnaeus). 



Margarita Island, Venezuela. (Wirt Robinson.) [U. S. N. M.] 

 Two 9. 



One of these specimens is larger than any of a numljer of main- 

 land specimens examined by the author.' 



OPHTHALMOLAMPIS Saussure. 



1859. Ophthalmokunpis Sau.ssure, Revue et Magasin de Zoologie, 2e ser., 

 XI, p. 394. 



Included 0. colibri and yersini Saussure, of which the former has 



been designated as the type by Kirby. 



Ophthalmolampis colibri Saussure. 



1859. 0[mmatnln)npis\ {Ophthalmolampis) colibri Saussure, Revue et 

 Magasin de Zoologie, 2e ser., XI, p. 394. [Guiana.] 



Surinam. May to September. [Hebard Collection.] One 9 . 



This individual undoubtedly belongs to Saussure's species, the 

 peculiar type of coloration of the pronotum and tegmina being 

 essentially as he describes. As the original brief description was 

 based on a. male, the female is here described. 



Size medium; form robust; surface except that of the abdomen 

 rugulose. Head broad, face slightly flattened; occiput rounded, 

 hardly elevated dorsad of the level of the pronotum; fastigium narrow, 

 the length not less than the greatest width, longitudinally sulcate; 



3 must. Exot. Ins., II, p. 82, pi. XLIV. 



