184 MANUAL OF THE MOLLUSCA. 



small, black, sessile at the inner bases of the tentacles ; lingual teeth (B. 

 physis) 13.0.13, serrated. 



Distr. 10 sp. U. States, W. Indies, Mauritius, Ceylon, China, Australia. 



SCAPHANDER, Montfort. 



Type, S. lignarius, PI. XIV. fig. 12. Etym. Scaphe boat, aner, man. 



Shell oblong, convolute ; spirally striated; aperture much expanded in 

 front; spire concealed; epidermis thick; lingual teeth 1.0.1. crested. 



Animal with a large oblong head, destitute of eyes ; foot short and 

 broad; lateral lobes reflected, but not enveloping the shell ; gizzard of two 

 large trigonal plates and a small narrow transverse plate (fig. 17). 



Distr. 5 sp. U. States, Norway, Brit. Medit. on sandy ground ; 50 fins. 



Fossil, 8 sp. Eocene . Brit. France. 



z 



Fig. 104. Bullcea aperta.* 

 BULL^A, Lamarck. f 



Type, B. aperta, PL XIV. fig. 13. 



Shell internal, white, translucent, oval, slightly convoluted, spire rudi- 

 mentary. 



Animal pale, slug-like ; mantle investing the shell ; head oblong ; eye- 

 less ; foot broad ; lateral lobes large, but not enveloping ; tongue with 2 or 

 4 series of sickle-shaped uncini ; gizzard with 3 longitudinal shelly plates. 

 Egg capsules ovate, in single series on a long spiral thread ; fry with a ciliated 

 head- veil and an operculated, spiral shell, (Lov'eri}. 



Distr. 10 sp. W. Indies, Greenland, Norway, Britain, Medit. Corea, 

 Borneo. Fossil, Eocene . France. 



Sub-genus, Chelidonura, A. Adams, (Hirundella, Gray) B. hirundinaria, 

 Quoy, Mauritius. Shell concealed; outer lip produced posteriorly into a 

 spur; columellar border inflected. Animal with enveloping side lobes; 

 mantle with two appendages behind, like the lateral processes of Hyalaea. 



DORIDITJM, Meckel. 

 Etym. diminutive of Doris. Syn. Accra, Cuv. Eidothea, Kisso. 



* From a specimen dredged at Folkstone; o, mouth, c, head, or cephalic disk, 

 t, side-lobes of the foot, ra, mantle, The shell s, and gizzard g, are indistinctly seen 

 through the translucent integuments. 



t Gray adopts the pre-Linnean name Philine (Ascanius, 1762), and D'Orhigny the 

 still older Lobaria, (Miiller, 1741), names given to particular species, and not to 

 genera as now understood. 



