| Acridoidea from Madagascar, Comoro Islands aud Eastern Africa. 633 
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Gymnobothrus scapularis Bolivar? 
A single female specimen without posterior legs and with partially abbreviated tegmina and wings 
that was preserved in spirits is referred to this species. with doubt. It was taken on the Island of Lamu, 
| British East Africa. 

Synopsis of the species of Gymnobothrus. 
A. Lateral carinae of the pronotum little or not at all divergent in advance of the principal trans- 
verse sulcus. 
b) Smaller (@, 11-12 mm, ©, 17 mm). [West Africa, Caconda.]| .. . . . Zlinea-alba Bol. 
bDD)Plrargerı (© 10: mm 2022 32mm) re [Madacascan) er rrrrvaniabilis, 0. sp: 
AA. Lateral carinae of the pronotum distinctly, sometimes greatly, divergent in advance of the princi- 
pal suleus. 
b) Metasternal lobes back of the foveola in the female convergent, contiguous. 
c) Tegmina relatively longer (3, 12 mm). |Lorenco Marques, East Africa.| scapularis Bol. 
cc) Tegmina relatively shorter (3, 9,5 mm). [Anchieta, West Africa.] .- anchietae Bol. 
bb) Metasternal lobes back of the foveola, in the female, convergent but not contiguous. 
c) Smaller (3, 12 mm, 9, 17—18 mm). 
d) Mediastin area of the tegmina extending beyond the middle. [Cabinda, West Africa. | 
eruciatus Bol. 
dd) Mediastin area of the tegmina not reaching the middle. |German East Africa.| 
oberthuri Bol. 
cc) Larger (4, 14--18 mm, 9, 19--24 mm). 
d) Lateral carinae of the pronotum most closely approximate at the anterior transverse 
Suleuss Madagascar en Zmadacassusn. sp. 
dd) Lateral carinae of the pronotum most closely approximate at the posterior sulcus. 
|Barombi-Station, West Africa.|. varians Karsch. 

Epacromia sansibara Karsch. 
Specimens of this species are at hand from the Comoro Archipelago and Madagascar. It is no 
doubt a very common insect among the grasses and other low herbage. 
b 
Epacromia thalassina Fabricius. 
Like the preceding this second species of Epacromia must also be a common grasshopper. Many 
specimens of both sexes are at hand from Madagascaren localities, but chiefly from the southwestern portion. 
Family Oedipodidae. 
Humbella tenuicornis Schaum. 
Two specimens from Mombassa captured on the 10th of February, 1903, are placed here. 
Voeltzkow: Reise in Ostafrika 1903—1905. Wissensch. Ergebnisse, Bd. II. so 
