The Cambridge natural history . Fig. 222.—Pachyotus aurisvulpina Desli., (sub-fossil). Fig. 223. --Helix {RelicojjJimita)Souverbiana Fiscli., Mada-gascar, showing embryonicshell, X |. traces of Indian relationship. Thus we find two species ofPaludomus, a genus whose metropolis is Ceylon, India, andFurther India, and which is barely represented on the Seychellesand in the Somali district. Melanatria, which is pecidiar toMadagascar, has its nearest affinities in the Cingalese and EastIndian faunas. Several of the Melania and the two Bithynia are of a type entirely wanting in Africa,but

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The Cambridge natural history . Fig. 222.—Pachyotus aurisvulpina Desli., (sub-fossil). Fig. 223. --Helix {RelicojjJimita)Souverbiana Fiscli., Mada-gascar, showing embryonicshell, X |. traces of Indian relationship. Thus we find two species ofPaludomus, a genus whose metropolis is Ceylon, India, andFurther India, and which is barely represented on the Seychellesand in the Somali district. Melanatria, which is pecidiar toMadagascar, has its nearest affinities in the Cingalese and EastIndian faunas. Several of the Melania and the two Bithynia are of a type entirely wanting in Africa,but common in the Indo-Malay sub-region. Not a single one of the char-acteristic African fresh-water bivalves{Mutcla, Siiatha, Aetheria, Galatea, etc.)has been found in Madagascar. Onthe other hand, certain African —Cyclosiomaccmpcmn- opoda, such as CJeojmtra and Isidora,latum Pfr., Madagascar. occur, indicating, ill couimon witli theland Mollusca, that an ultimate land connexion with Africa musthave taken place,

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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1895