168 Mr. R. Shelford on new 
rated by three (latipennis) or two (pallicornis) pores 
relatively large size and. semilunar in shape; the tongue 
chitin projecting into the crescentic pores is tuberculate 
pallicornis, Lut simple in latipennis. It is difficult even to 
guess at the function of these pores. Since they occur in 
both sexes, it is evident that they are not secondary sexual 
structures; but it is just possible that they are connected 
with prothoracic repugnatorial glands, though such have not 
yet been shown to occur in the Blattide. The pronotal 
integument appears to be double in the region of these pores, 
and the pores appear to lead into a cavity existing between 
the upper and lower layers, and not to perforate the entire 
integuinent, for a bristle passed through one of them does not 
emerge on the ventral side of the pronotum., Without 
dissection it is not possible to be certain as to the relation of 
the parts, and the pores may be merely the entrances to 
invaginated cavitics in the thickness of the pronotal chitin. 
Key to the Species. 
Males. 
1, Pronotum and abdomen with erect pubes- 
cence. 
2. Pronotum with large lateral pores .... 
2'. Pronotum without large lateral pores. . 
1’. Pronotum and abdomen not pubescent. 
[E. Africa.) 
latipennis, Kirby. (Brit. 
macra, Stal. (S. Africa.) 
[ boon.) 
2. Posterior margin of pronotum dentate . scabricollis, Gerst. (Ga- 
2’, Posterior margin of pronotum not den- 
tate. 
3. Tegmina scarcely exceeding the apex 
otthembdomen) Wises cck ce ses gibbicollis, Stal. (Natal.) 
3’, Tegmina considerably exceeding the 
apex of the abdomen. 
4, Small species (total length about [ Africa.) 
OOUNMI). sciatecine Cvalee leer ane poduriformis, Walk. (8. 
4', Larger species. 
5. Tegmina pale testaceous, casta- [E. Africa, Somaliland.) 
neous at base, sem ence le were capucina, Gerst. (Germ. 
5’. Tegmina uniform castaneous ..  marshalli, sp.n. (Rho- 
[desia.) 
Females. 
1, Body slender, elongate: species of small 
size. [A frica.) 
2. Pronotum much longer than broad .... goduriformis, Walk. (S. 
2’. Pronotum scarcely longer than broad 
or as broad as long. [ (Somaliland.) 
3. Abdominal segments scabrous...... graniger, Sauss. & Zehnt. 
3’. Abdominal segments smooth ...... nyasé, sp.n. (Nyasa- 
1’. Body less slender, abdomen sometimes [Jand.) 
ampliated: species of larger size. 
2. Pronotum distinctly broader than long. 
