330 ORTHOPTERA. 



1. (Edaleonotus enigma, Scudd. 



Pezotettix enigma, Scudd. Ann. Rep. Chief Eng. 1876, p. 505 l . 



(Edaleonotus enigma, Scudd. Proc. U.S. Nat. Mus. xx. pp. 391-393, t. 26. figg. 4-6 (1897) \ 



Pezotettix jucundus, Scudd. Ann. Rep. Chief Eng. 1876, p. 505 3 . 



Melanoplus collaris, Scudd. Proc. Bost. Soc. Nat. Hist. xix. p. 286 (1878) 4 . 



Melanoplus flavolineatus, Bruner, Bull. Div. Ent. U.S. Dept. Agric. xxviii. p. 33 (1893) 5 . 



Hab. North America, Pacific Coast from Washington to Southern California 2 

 (coll. L. Bruner). — Mexico, Sonora (coll. L. Bruner). 



PHILOCLEON, Scudder. 



Philocleon, Scudder, Proc. Amer. Acad. Art. Sci. xxxii. p. 203 (1897) ; Proc. U.S. Nat. Mus. xx. 

 pp. 14, 396 (1897). 



Philocleon is the name given to a medium-sized, variegated, apterous locust found 

 on the tablelands of North and Middle Mexico. Only a single species is known. 



1. Philocleon nigrovittatus, Stal. (Tab. IV. figg. 17, 17 a, s .) 



Pezotettix nigrovittatus, Stal, Bihang till K. Sveusk. Vet.-Akad. Handl. iii. no. 14, p. 32 (1875) l ; 



v. no. 9, p. 15 (1878) \ 

 Philocleon nigrovittatus, Scudd. Proc. U.S. Nat. Mus. xx. p. 396, t. 26. figg. 8, 9 (1897) 3 . 

 Pezotettix apterus, Bruner, MS. 4 . 



Hab. Mexico 12 , Comancho, Zacatecas 3 (coll. L. Bruner), San Luis Potosi 3 . 



OSMILIA, Stal. 

 Acridium, auct. (part.). 

 Osmilia, Stal, Recens. Orthopt. i. p. 68 (1873) ; Syst. Acrid, i. pp. 10, 25 (1878) ; Giglio-Tos, Boll. 



Mus. Zool. Anat. Comp. Torino, xiii. no. 311, p. 50 (1898); Bruner, Proc. U.S. Nat. Mus. 



xxx. pp. 643, 693 (1906). 



The genus Osmilia of Stal contains several inconspicuously coloured species of locusts 

 that are confined to Tropical America. At least three, and possibly four, species occur 

 within " Biologia " territory. They may be separated by the annexed table : — 



Synopsis of the Species of Osmilia. 



A\ Hind wings at base pale greenish-yellow. 



b 1 . Rather slender, with the head only a trifle wider than the front edge 

 of the pronotum. The outer face of hind femora infuscated and 



with its lower edge decidedly yellow 1. flavoliaeata, De Gr. 



b 2 . More robust, with the head markedly wider than the front edge of 

 the pronotum. The outer face of hind femora but little infuscated, 



its lower edge less decidedly yellow 2. tolteca. Sauss. 



A 2 . Hind wings pale blue 3. ccelestis, Burm. ; 4. violacea, Thunb. 



