96 Annals of the Carnegie Museum. 



5. Paratettix wilverthi Bolivar? 



ParaleUix wilverthi Bolivar, Mem. Soc. Ent. Belg., XVI, p. 86 (1908). 



There are five specimens belonging to this genus, a single female and 

 four males, which rather closely approach Bolivar's description of P. 

 wilverthi, and they are accordingly referred to it. The female and 

 two males were collected by A. I. Good at Lolodorf, while the other 

 males are from Batanga and were taken by F. H. Hope. Only the 

 female agrees very closely with the characterization of the species 

 as given by Bolivar. The others vary more or less. 



Genus Acrydium Geoffroy. 



Acrydium Geoffroy, Hist. Ins., I, p. 390 (1762); Kirby, Syn. Cat. Orth., Ill, 

 P- 35 (1910). For a more extended bibliography of the genus see Kirby, I. c. 



This is the genus Tetrix of Latreille and Tettix of Charpentier and 

 later writers. However, according to priority, and other rules of 

 zoological nomenclature, it seems to be necessary to discard these later 

 and almost universally used names for that of Geoffroy. 



According to the characters used for the separation of this genus, 

 at least two distinct forms must be referred to it. 



6. Acrydium gratiosus (Karsch)? 



Teltix gratiosus Karsch, Berlin. Ent. Zeitschr., XXXVIII, p. 120 (1893). 

 Acrydium gratiosum Kirby, Syn. Cat. Ortli., Ill, p. 44 (1910). 



A single female coming from Lolodorf, Cameroon, thus determined. 

 It was taken by A. I. Good on November 12, 1913. C. M. Ace. No. 

 5264. 



7. Acrydium waelbroechi (Bolivar)? 



Tettix wcelbroaechi Bolivar, Mem. Soc. Ent. Belg., XVI, p. 87 (1908). 

 Acrydium wcelbrcechi Kirby, Syn. Cat. Orth., Ill, p. 49 (1910). 



There are two males of a second species, which were also taken by 

 Mr. Good in November, 191 3, and are referred with some doubt to 

 Bolivar's Tettix waelbrwcki, originally described from Kinchassa in the 

 Congo. They form part of the same accession as the preceding. 



Family TRUXALID.-E. 



Africa is the habitat of a large number of genera and species of 

 truxaline locusts. The present collection, however, does not contain 

 many representatives of the group, since only about half a dozen 



