58 Lamarck's Genera of Shvlis. 



two teeth on the right lip are short and obtuse. The left lip resem- 

 bles a flattened columella. Coasts of Peru. PI. v. Fig. 192. 



7. Harpa*. 



Shell oval, more or less inflated, with parallel, inclined and 

 sharp longitudinal ribs. Spire short. Aperture notched at the 

 lower part ; no canal. Columella smooth, flattened and pointed 

 at the base. 



Linneus comprehended almost all the harpse, under the name of 

 buccinum harpa, considering them as forming only one species. 

 But although they agree in the common character, that all have 

 external, longitudinal, parallel, compressed, inclined and sharp 

 ribs, and that the upper extremity of each rib forms a small, de- 

 tached, projecting point, there are, nevertheless, constant pecu- 

 liar characters, which distinguish the several species. They are 

 principally found in hot climates. 



Type. Harpa ventricosat. (Buccinum harpa. Linn.) 



Shell ovate, ventricose ; ribs broad, compressed, tinged with 

 purple, pointed at the apex, with one tooth below the point ; in- 

 terstices whitish, marked with curved, reddish-brown spots ; colu- 

 mella spotted with purple and black. Indian Ocean, PI. v. 

 Fig. 193. 8 Recent species, and 1 fossil. 

 8. DoliumJ.. 



Shell thin, ventricose, inflated, generally subglobular, rarely 

 oblong; transversely banded; right lip toothed, or crenate through 

 its whole length. Aperture oblong, notched below. 



Linneus, and other naturalists, considering only the notch at the 

 base of the aperture, have confounded the dolium, harpa, terebra, 

 eburna, <Sc, with the buccina, notwithstanding their great differ- 

 ences in point of general form, and the distinct characters by 

 which nature has arranged them in separate groups, all of which 

 are thus made to fade away, before the insulated circumstance of a 

 notch at the base of the shell. 



* A harp. 



f Ventricose. Lamarck's second species ; his type is H. impertalis. 



J A tun. 



