TROPIDACRIS — TITANACRIS. 241 



4. Tropidacris grandis, Thunberg. 



Gryllus grandis, Thunb. Mem. Acad. St. Pe'tersb. ix. p. 403 (1824) \ 



Acridium dux, Brulle, Hist. Nat. Ins. ix. p. 225 (1835) a ; Serv. Hist. Orthopt. p. 653 (1838) 3 . 



Tropidacris grandis, Stal, Recens. Orthopt. i. p. 49 (1873) 4 . 



Tropidacris fabricii, Scudd. Proc. Bost. Soc. Nat. Hist. xii. p. 349 (1869) 5 . 



Hab. Tkopical America 1_5 . 



5. Tropidacris cristata, Linn. 



Gryllus (Locusta) cristatus, Linn. Syst. Nat. ii. p. 431 (1758) \ For further synonymy, 

 see Pict. et Sauss. Cat. Acridiens, p. 32. 



Hab. South America \ Colombia 1 to Argentina. 



This and the preceding species doubtless extend northward into Central-American 

 territory. T. cristata is very common in Colombia, as well as further to the southward. 

 It is reported that this species, which is called the " langosta negra" occasionally 

 travels in swarms in the western portion of Argentina. Several specimens from such 

 a swarm that visited Catamarca are in the present writer's collection. A variation of 

 the species with much paler wings occurs in Southern Brazil. 



TITANACKIS, Scudder. 



Titanacris, Scudder, Proc. Bost. Soc. Nat. Hist. xii. p. 352 (1869) ; Stal, Recens. Orthopt. i. 



p. 50 (1873) ; Syst. Acrid, i. p. 18 (1878) ; Pict. et Sauss. Cat. Acridiens, i. p. 32 (1887). 

 Lophacris, Scudder, loc. cit. p. 353 (1869). 



These large, green, lobe-crested locusts, with beautifully and highly- coloured hind 

 wings, are much more restricted in their distribution than are the members of the 

 preceding genus. While about the same number of species are known, but two 

 seem to enter Central- American territory. 



1. Titanacris velasquezi, Nieto. (Tab. III. figg. 7, 7 a.) 



Acridium velasquezii, Nieto, Rev. et Mag. Zool. 1857, p. 360, t. 12 \ 

 Lophacris velasquezii, Scudd. Proc. Bost. Soc. Nat. Hist. xii. p. 354 (1869) 2 . 

 Acridium olfersii, Sauss. Rev. et Mag. Zool. 1861, p. 162 3 . 



Hab. Mexico 3 , Potrero and San Francisco, Vera Cruz *■ ; British Honduras, Belize 

 (Blancaneaux : $ ) ; Panama ( U.S. Nat. Mus. : ? ). 



2. Titanacris carinata, Stoll. 



Gryllus carinatus, Stoll, Repres. Sauter. etc. p. 12, t. 5. fig. 16 (1773) x . 



Acridium albipes, Burm. Handb. Ent. ii. p. 628 (1838) 2 ; de Haan, Bijdr. tot Kenn. Orthopt. 



p. 151 (1842) 3 . 

 Titanacris carinata, Scudd. Proc. Bost. Soc. Nat. Hist. xii. p. 352 (1869) \ 



Hab. Tropical America 1_4 ; West Indies K 

 biol. CENTR.-AMER., Orthopt., Vol. II., July 1907. 2 Ii 



