MNIOPHOKA.— EHICNODEEMA. 247 



[6. Taeniophora unistrigata, De Haan. 



Acridium (Oxya) unistrigatum, de Haan, Bijdr. tot Keim. Orthopt. p. 158, t. 21. figg. 7 (S), 

 8(2) (1842) x ; Stal, Obs. Orthopt. i. p. 53 (1873) \ 



Hob. Teopical Ameeica. 



De Haan gives New Guinea as the habitat of this insect, but this is certainly an 

 error. It undoubtedly is at home in some portion of Central or South America.] 



MEZENTIA, St&l. 



Mezentia, Stal, Bihang till K. Svensk. Vet.-Akad. Handl. .v. no. 4, pp. 43, 88 (1878) ; Giglio-Tos, 

 Boll. Mus. Zool. Torino, xiii. no. 311, p. 43 (1898). 



The genus Mezentia is known only by a single species which comes from Panama. 

 It is not represented in the collections studied. 



1. Mezentia gibbera, Stal. 



Mezentia gibbera, Stal, Syst. Acrid, i. p. 88 (1878) l . 

 Sab. Panama x . % 



HISYCHIUS, Stal. 



Hisychius, Stal, Bihang till K. Svensk. Vet.-Akad. Handl. v. no. 4, pp. 44, 89 (1887) ; Giglio-Tos, 

 Boll. Mus. Zool. Torino, xiii. no. 311, pp. 43, 52 (1898). 



Hisychius is another tropical genus that reaches the borders, at least, of the 

 territory covered by the present treatise. It is represented by several species, only one 

 of which will be mentioned. 



1. Hisychius festae, Giglio-Tos. 



Hisychius festte, Gigl.-Tos, Boll. Mus. Zool. Torino, xii. no. 301, p. 3 (1897) l ; xiii. no. 311, p. 52 

 (1898) 2 . 



Hab. Panama, Darien 1-2 . 



This insect is not contained in the collections studied by me. 



EHICNODERMA, Gerstaecker. 

 Rhicnoderma, Gerst. Mittheil. naturwiss. Ver. Neu-Vorpomm. und Btigen, xx. p. 20 (1889). 



The genus Rhicnoderma, which is composed of oddly-formed, apterous, olivaceous 

 locusts, seems to be confined to the northern half of Tropical America, where it is 

 represented by at least four, or possibly five, distinct species. Judging from their 

 slightly hollowed sternum, it is safe to say that these insects live for the most part 

 upon the smaller branches of shrubs and trees, to which they cling tenaciously. The 

 annexed table will aid the student in separating them. 



