140 OBTHOPTEEA. 



This insect, which is the type of the genus, will very likely be found to occur like- 

 wise in portions of Northern Mexico.] 



[2. Encoptolophus coloradensis, sp. n. 



Somewhat resembling E. sordidus in general form, but differing from it in several respects. The chief of these 

 variations are — a lower median carina of the pronotum, in which the two sections are about equal in 

 height, glaucous (instead of fuliginous) hind tibiae, and a prevailingly pale greyish-testaceous colour, with 

 decided dark markings on the tegmina, hind femora, and posterior half of the pronotal disc. 



Length of body, 3 19, $ 28 ; of antennae, J 7, $ 8 ; of pronotum, J 4, $ 5 ; of tegmina, 6 H. $ 20 ; 

 of hind femora, <$ 11, $ 14 millim. 



Hab. Noeth America, Fort Collins, Colorado (C. P. Gillette). 

 A pair, captured on August 14th.] 



3. Encoptolophus costalis, Scudd. 



(Edipoda costalis, Scudd. Bost. Journ. Nat. Hist. vii. p. 473 (1 862) x ; Thomas, Acrid. N. Amer. 



p. 112 (1873) 2 . 

 Tragocephala costalis, Stal, Recens. Orthopt. p. 119 (1873) 3 . 

 Encoptolophus costalis, Scudd. Proc. Bost. Soc. Nat. Hist. xvii. p. 480 (1875) * ; Sauss. Prodr. 



(Edip. p. 77 (1884) 5 . 



Bab. North America 1_5 , Texas, New Mexico, &c. — Mexico, Alta Mira in Tamaulipas, 

 Zapotanito and Juanacatlan in Jalisco (Jas. A. G. Rehn). 



The author has authentic specimens of both this and the following species before 

 him as these lines are being written. These insects bear labels in Scudder's hand- 

 writing. They appear to be distinct. 



4. Encoptolophus parVUS, Scudd. 



Encoptolophus parvus, Scudd. Proc. Bost. Soc. Nat. Hist. xvii. p. 480 (1875) l ; Sauss. Prodr. (Edip. 

 p. 78 (1884) 2 ; Rehn, Proc. Acad. Nat. Sci. Philad. 1904, p. 524 3 . 



Hab. North America, Texas 1-3 . — Mexico, Guadalajara in Jalisco [Jas. A. G. Rehn). 



This may be only a diminutive, short-winged variety of JE. costalis, as suggested by 

 Saussure (loc. cit.) ; but the differences as given in the synoptic table point to a 

 separation of the two as distinct species. 



[5. Encoptolophus montanus, sp. n. 



Encoptolophus sordidus, Cooley, Bull. Agr. Exp. Stat. Mont. no. 51, p. 238, t. 6. fig. 4 (1904) 

 (nee Burm.) \ 



The insect here referred to as new is much smaller than E. sordidus (Burm.), with which it may he briefly- 

 compared. In size and form it is very similar to Camnula pellucida, a species that is largely testaceous, 

 instead of green and cinereous. E. montanus differs from E. sordidus by being frequently in great part 

 green, especially in the $ , and in having the dark markings of the tegmina more decided, the abdomen 

 lighter-coloured, and theX-shaped light mark of the disc of the pronotum frequently absent. The hind 



