MOLLUSC A GASTEROPODA. 431 



H. ovum, Val. ; moreover, it is remarked that H. castanea 

 Mull., is identical with Nanina Juliana, Gray, and probably 

 also with H. Belangeri, Desh., and bombeyana. There are 

 also remarks upon Bulimus ovoideus, ventricosus, and correc- 

 tions of the synonymy of some species of the genera Bulimus 

 and Pupa, 



In the same journal (p. 188), and continued in the first 

 sheet for the year 1845, Menke expresses himself respecting 

 the interpretation of the Helices which Linnaeus obtained 

 from the Barbary States. 



H. striatula, Linn., be regards as Carocolla limbata, Phil., Lcucocliroa lim- 

 bata, Beck, Helix amanda, Rossm., //. Boyssii, Terver. H. alyira does not 

 occur in Africa. H. leucas, Lirui., is a young H. pisana, Mull. H. pupa, 

 Linn., is explained to be Bulimus pupa, Brug. H. barbara is referred 

 doubtfully between Bulimus acutus and B. ventricosus, but at all events is a 

 Bulimus. 



Helix Duvalii, Petit (Revue Zool. 1844, p. 1 ; Guerin Mag. 

 pi. 93) : orbicular depressed, umbilicate, five whorls, ches- 

 nut brown, with a yellow band, labrum reflexed, 40 millim. 

 Madagascar. 



Three new species of Helix are instituted by Hinds 

 (Voyage of Sulphur) : H. adustus, umbilicate, depressed, 

 brown, four approximated whorls, labrum thick, reflexed. 

 H. squalus, umbilicate, globular thin, corneous, labrum acute, 

 reflexed. Both from New Ireland. H. pyxis, not umbilicate 

 high, transparent, four round whorls, the ultimate keeled in 

 the middle, labrum acute, reflexed. 



In Philippi (Abbild. Lief, iv, tab. 4) Pfeiffer has given 

 figures of the following Helices, which have been already 

 noticed in his Syrnbolse : H. sagitttfera, Pfr., bulla, Pfr., 

 bifasciata, Lea, sirena, Beck, bigonia, Fer., = samarensis, 

 Pfr., Beckiana, Pfr., trochiformis, Fer., marginata, Miill., 

 diluta, Pfr., Butleri, Pfr. Furthermore, in Part 7 the fifth 

 plate is devoted to the genus Helix. It contains : 



H. prasina, Koch, pale bluish green ; H. areas, Koch., chesuut brown, a 

 tooth on the last whorl, another opposite it. H. crassula, Phil., flat above, 

 (he whorls higher than broad, beset with minute hairs. Java. H. tortilal//", 



