INDEX. 



363 



Geological types, Huxley's discourse on, 

 352. 

 ,, views, the older, 32. 



,, nature of the African interior, 



broad conclusions on, 69. 

 Geology of the Congo, 355. 



,, ,, Rusisi valley, 82. 

 ,, ,, Shirwa district, 57. 

 ,, ,, Southern section of the 

 African interior, 56. 

 Gephyrochromis moorii, description of, 



196. 

 Gnathonemus stanleyamus, 128. 

 Gotzen, explorations of, 79. 

 Grammatoria lemairii, description of, 191. 

 Great African Central range, 34. 



,, , , , elevation and de- 



pression in, 35. 

 ,, ,, , examination of, 40. 



,, ,, extent of, 33, 



,, ,, , formation of, 68. 



,, ,, , upthrust in, 39, 98, 



101. 

 ,, ,, , volcanoes in rela- 



tion to, 36. 

 Gregory, explorations of, 34. 



HALOLIMNIC FAUNA, 9, 141, 143, 

 327, 328, 329. 

 ,, ,, , affinities of, 351, 352. 



,, ,, , ancestral type of, 341. 



,, ,, , distinctive characters 



of, 334- 

 ,, ,, , evidence concerning 



the, 353, 354. 

 ,, ,, , hypotheses to account 



for, 336. 

 ,, ,, , marine origin of, 337, 



339> 343- 



,, ,, , meaning of its pecu- 



liarities, 331. 



,, , , , primitive characters of 



the, 330. 



,, ,, , Tanganyika of, 139, 



140, 141, 150. 



,, fishes of Africa, 340. 



,, gastropods, nature of, 266. 



Haplochilus johnstoni, 124. 

 Hemitilapia oxyrhynchus, 124. 

 Herbst, experiments of, 28. 

 Hipponyx, affinities of, 271. 

 History of the continent, 8. 

 Hog's back, geological form of the con- 

 tinent, 39. 

 Huxley's discourse on geological types, 



35i- 

 Hypotheses, various, to account for the 



halolimnic fauna, 336, 

 Hydrocyon forskalii, 132. 

 ,, lineatus, 128, 154. 



INVESTIGATIONS OF SEMPER 



AND SOLLAS, 12. 

 Isidora coulboisi of Tanganyika, 217. 



,, forskali, 131. 



,, nyassana, 125. 



,, strigosa, 1 31. 



,, succineoides, 125. 



,, transversalis, 131. 



,, trigona, 131. 

 Island floras compared to lake faunas, 147- 



151- 



Islands, probable group of ancient, 68. 



JELLY-FISH OF TANGANYIKA, 133, 



141, 287. 

 ,, ,, , description of, 



298. 

 ,, ,, , life history of, 



3°i, 305- 

 ,, ,, , native descrip- 



tion of, a, 

 302. 

 ,, ,, reported in the 



Congo, 140. 

 Jolly, conclusions of, 26. 

 Jordan, the valley of, a eurycolpic fold, 40. 

 Julidochromis ornatus, description of, 176. 

 Jurassic fauna of Tanganyika, 74. 

 ,, gastropods, affinities of, 351. 

 ,, parallels among the gastropods of 



Tanganyika, 349. 

 ,, shell Amberleya, 346. 



