, 
1927] Pilsbry-Bequaert, The Aquatic Mollusks of the Belgian Congo 130 
the International Commission, being an absolute synonym of Bulinus 
Miiller.! 
Subgenus BuLinus, proper 
Shell ovate, elongate-ovate, or globular, not turreted. In some species the spire 
flattened above. 
The following species are to be noted. 
Bulinus alluaudi (Dautzenberg) = Physa alluaudi DauTzENBERG, 1908, Journ. 
de Conchyl., LVI, p. 17, Pl. 11, figs. 11-12. Nairobi, Kenya Colony. 
Bulinus angolensis (Morelet)=Physa angolensis Moreet, 1866, Journ. de 
Conchyl., XIV, p. 162; 1868, ‘Voy. Welwitsch, Moll. Terr. Fluv.,’ p. 88, Pl. rx, 
fig. 8. Physa algoensis G. B. SownrBy, 1873, ‘Conchol. Iconica,’ XIX, Physa, Pl. 
vil, fig. 53. Duque de Braganga, Angola. 
Bulinus benguelensis (Sowerby) =Physa benguelensis G. B. Sowmrsy, 1873, 
‘Conchol. Iconica,’ XTX, Physa, Pl. rx, fig. 77. Benguela. This species is, according 
to the figure, much like B. canescens (Morelet), with which it should perhaps be 
united. 3 
Bulinus brocchit (Ehrenberg) =Isidora brocchit EHRENBERG, 1831, ‘Symbole 
Physice, Evertebrata, I, Mollusca,’ p. [20]. Syria and Lower Egypt. This is fre- 
quently regarded as a synonym of B. truncatus (Audouin). 
Bulinus comptus (Melvill and Ponsonby) =Isidora compta MEtvitL AND Pon- 
sonBy, 1903, Ann. Mag. Nat. Hist., (7) XII, p. 606, Pl. xxxtt, fig. 14. Boksburg, 
Transvaal. . 
Bulinus contortus (Michaud) = Physa contorta MicHaup, 1829, Bull. Soc. Linn 
Bordeaux, III, p. 268, Pl., figs. 15-16. Type locality: Eastern Pyrénées, France; 
also said by Michaud to occur in Sicily. This is a common species in the Mediter- 
ranean Subregion apparently entering the Sudan and extending into Abyssinia.? 
Connolly even lists it from South Africa. According to certain authors it is the same 
as Ehrenberg’s Isidora hemprichii and I. brocchii, which are posterior, notwithstanding 
Annandale’s statement to the contrary (1922, Indian Jl. Med. Research, X, 2, p. 485). 
Moreover, B. contortus may ultimately prove to be the same as B. truncatus (Audouin), 
in which case the latter name will have precedence. | 
The following names appear to be plain synonyms of B. contortus: Physa harpula 
Féerussac, 1823, Mém. Soc. Hist. Nat. Paris, I, p. 365 (nomen nudum); Physa mareo- 
tica ‘‘Parreyss’’ SowERBY, 1878, ‘Conchol. Iconica,’ XIX, Physa, PI. x, fig. 78; Physa 
rivularis Purrpri, 1836, ‘Enum. Moll. Sicil.,’ I, p. 146, Pl. rx, fig. 1; Physa scalata 
Merian, 1847, Ber. Naturf. Ges. Basel, p. 91; and Physa spiracea “ Parreyss”’ 
JICKELI, 1874, Nova Acta Ac. Nat. Cur. Dresden, XX XVII, 1, p. 204. 
Bulinus contortus var. rugosus (Pallary) = Bullinus contortus var. rugosa PALLARY, 
1909, Mém. Inst. Egyptien, VI, 1, p. 53. Tourah, Lower Egypt. 
1The combination ‘“‘ Bullinws Adanson,’’ used by some authors is ruled out because it is false— 
Adanson never used ‘‘ Bullinus’’—and because a pre-Linnean author is not quotable as authority for 
eneric or specific names. : : 
‘i 2See Dollfus, R. P. 1922.‘ Sur la présence en France et en Corse du Bullinus contortus (Michaud), 
héte intermédiaire de Schistosoma hematobium (Bilharz).’ Bull. Soc. Path. Exot. Paris, XV, pp. 208- 
12 
Brumpt, E. 1922. ‘La bilharziose au Maroc. Répartition du Bullinus contortus et du Planorbis 
metidjensis.’ Op. cit., XV, pp. 632-641. 
