OLIVlDiE. 



m 



OLivuLA, Conrad. Shell decussated by distinct close, longitu- 

 dinal and revolving striae ; spire covered by a longitudinally 

 striate callous deposit, forming a raised band upon the suture of 

 the body-whorl ; aperture posteriorly channeled. Fossil only. 

 A. staminea^ Conr. (Ivi, 72). 



ANOLAciA, Gra}^ (Cymbancilla, Fischer.) Shell oblong-ovate, 

 thin ; bodj^-whorl swollen, irregularly covered with slight 

 revolving striae ; spire very short, callous. Somewhat resembles 

 the genus Cymbium. A. Maiiritiana, Sowb. (Ivi, 75). 



DiPSACcus, Klein. Shell solid, polished ; columellar lip twisted, 

 separated from the body-whorl by a tortuous fissure opening into 

 the umbilicus above ; outer lip with a slight tooth in front. A. 

 glabrata, Linn. (Ivi, 76). 



ANCiLLiNA, Bellardi, 1882. Spire produced, body-whorl rather 

 short ; on all the whorls is a narrow channel close to the suture ; 

 columella uniplicate. A. pusilla, Fuchs. Tertiary ; Northern 

 Italy. 



ANCILLARINA, Bellardi, 1882. Shell narrowly elongated, sub- 

 cylindrical, with short spire ; anterior area defined by an oblique 

 sulcus which terminates in a tooth on the outer lip. A. suturalis, 

 Bon. 2 sp. Tertiary ; Northern Italy. 



Subfamily HABPINJE. 



Head and tentacles exposed; eyes conspicuous; mantle simple, 

 enclosed, without a tapering appendage in front ; foot large, flat, 

 not reflexed on the sides of the shell. No operculum. Shell 

 large, ventricose, longitudinally ribbed ; columellar lip without 

 anterior plications or grooves. Dentition (x, 16). 



Harp A, Lam. 



Harp-shell. 



Syn. — Harpalis, Link. Harparia, Eaf. Lyra, GrriflSth. 



Distr. — 9 sp. Tropical; Mauritius, Philippines, Cejdon, Poly- 

 nesia, West Coast of America (absent from the tropical Atlantic 

 0.). Fossil. Eocene — . H. ventricosa, Lam. (Ivi, 77). 



Generic characters, those of the subfamily. 



The figure (x, 16) of the dentition is copied from Troschel, 

 and is from a quite young individual. The lingual ribbon is, in 

 this genus, very minute compared with the size of the animal. 

 Troschel was not able to detect any lateral teeth, but Macdonald, 

 who only observed them towards the posterior extremity, records 

 that they are very similar to those of Oliva. Other observers 

 have not found a trace of lingual armature, and it is possibly 

 only developed in the j^oung animal. The animal of Harpa is 

 variegated with beautiful colors. It crawls with vivacity. The 

 front of the foot is crescent-shaped, and divided by deep lateral 

 fissures from the posterior part. Unable to withdraw completely 



