INDEX 
Caridina togoénsis var., 11, 18, 15, 
17, 64, 65. 
Spatha, 413, 414. 
degouset, Corbicula, 345. 
deguerryanus, Lanistes, 194. 
Meladomus, 194. 
delessertiana, Corbicula, 339. 
delessertu, Fischeria, 369, 370, 373, 374. 
Iphigenia, 370, 371, 374. 
delicatus, Rachis béhmi, 496. 
delphinus, Unio, 409. 
dembea, Melania, 257. 
Unio, 380. 
dembee, Unio, 380, 382. 
Dendrolimax, 482, 503. 
denhami, Attheria, 450. 
densestriata, Vivipara, 204. 
Dentatus, 131. 
denticulata, Voluta, 103, 104. 
denticulatus, Diogenes, 2, 7, 8, 56 (Fig. 
74). 
Donax, 359. 
depravata, Melania, 264. 
Melania nyangweensis, var., 265. 
Melanoides, 254, 264, 268. PI. 
XXII, figs. 4-5. 
depressa, Ampullaria, 173. 
Lanistes guinaicus mut., 187. 
depressus, Lanistes carinatus var., 186. 
Desmidiacee, 530. 
Desmocaris, 7, 8, 23. 
destructor, Spheroma, 563. 
diademata, Lavigeria, 326, 590. 
Nassopsis grandis var., 326. 
Paramelania, 326. 
diaphana, Physa, 136. 
diaphanus, Bulinus, 136. 
Diastropha, 138. 
Diatomacee, 251. 
didieri, Physopsis, 143. 
Physopsis africana var., 143. 
difficilis, Corbicula, 339. 
Diggrerdum, 215. 
Digoniostoma, 213. 
Digyrcidum, 218, 214, 215. 
Digyrerdum, 216. 
diluculi, Mycetopoda, 599. 
dimidiata, Paludina, 206. 
617 
duminutis, Unio, 380. 
diminutiva, Burnupia ponsonbyi var., 
152. 
diminutus, Unio, 380. 
Diogenes, 2, 7, 8, 56. 
diolibana, Iridina, 443. 
diolabanus, Pliodon, 443. 
Diplodiscus, 125. 
Diplodon, 400, 599. 
Diplodon, 404. 
Diptera, 471. 
disciformis, Nodularia, 380. 
Zairia, 380, 569. 
discors, Querquedula, 539. 
Discus, 131. 
Discus, 131. 
disjuncta, Physa tchadiensis var., 137. 
disseminata, Gulella, 503. 
Distoma, 91. 
- Distomum, 88. 
Distomum, 93. 
distorta, Bullinus innesi var., 136. 
distortus, Bulinus innesi var., 136. 
divaricata, Aspatharia, 414, 415, 418. 
Spatha, 414. 
divaricatus, Unio, 378. 
divergens, Dardanus arrosor var., 49. 
dohrni, Pedipes, 103. 
Dolichonyx, 531. 
dolioides, Pomacea, 535. 
Dombeya, 509. 
domestica, Musca, 471. 
Donacide, 71, 336, 337, 345, 359. 
Donacina, 369. 
Donax, 359. 
Donax, 368, 369, 374. 
dongolensis, Neritina, 158. 
Dorcasia, 484, 486. 
Dorcasiine, 484, 486. 
dorsalis Aspatharia wahlbergi var., 423. 
Spatha wahlbergi var., 423. 
Dorsanum, 565. 
doufilei, Corbicula, 339. 
douglasiz, Unio, 387. 
Dresseina, 455. 
Dreissena, 455, 456. 
Dreissenia, 456. 
Dreissensia, 456, 457. 
