198 HKMISKPMS. 



S. ORBIGNYANA, Fer. and Orb. PI. 94, figs. 438, 4:','.'. 



Body oblong, elongate, smooth: tins narrow, thin; head very 

 large ; arms short, unequal, order of length 1, 4, 3, 2 ; cups suh- 

 spherical, in two rows on the base of the three upper pairs and 

 four on the ventral pair, horny rin^s entire : tentacles slender. 

 club lanceolate, the cups in live lines, with live or six very large 

 ones iu the middle line. Shell elongated, grooved above, gran u- 

 lar: narrow and acuminated in front: narrowed, thin, rounded, 

 and with an elongated recurved beak behind. Length, 9 inches. 



Great Britain to Mediterranean. 



This and the preceding specie- are both eaten in the Mediter- 

 ranean countries. 



Sessile arms with very unequal sized cups, the middle ones largest. 

 Shell narrowed behind. 



S. CAPSNSIS, Orb. PI. 94, tigs. 440-44:!. 



Body ovate, oblong, smooth; tins dilated behind : arms short, 

 strong, the cups spherical, peduncled ; tentacles scarcely clubbed, 

 the cups slightly oblique in three series, the middle series with 

 three much largest, and with the rings toothed on the inner 

 edge. Shell much depressed, oblong, elongate, enlarged and 

 pointed in front, tapering, thin, very obtuse and with an acute 

 projecting beak behind. Length. 4.', inches. 



Cape of Good Hope ; Australia. 

 S. BKA< -Ji yen KM! A. Tapparonc-( 1 anofri. 



I have not been able to obtain a view of the journal in which 

 this species is dcNcribrd. 



Doubtful species. 



S. MI i'!u\ATA. Kaf. This may equal S. /<//////>/. Sirih/. 

 S. ANTII.I.AKI M. d'Orb. 

 S. CIN.i i-A'i'A, Co>ta. 

 S. HEXAPUS, (imel. = Spectre, an urthopterous insect. (See |>. 

 '.(. and lower figure of frontispiece.) 



Uenus HEMISEPIUS, 



II. Tyi-ici 8, Slcenslrup. PI. 94, ligs. 444-447- 



IJodv semi-oval, broad, rounded behind, it- ventral margins 

 with grooves containing on each side a row of aqueous pores. 



