PTLORIDEA. 259 



collated, outer lip digitated; including Tribulus. Fig. 

 413. 



11. Teichoteopis. Hairs on the epidermis, along the keels, 



Kg. 429. 



12. Teeebba. Elongated, with a spiral groove near the suture 



of the whorls. Tig, 428. 



13. BuLLiA. Short ; aperture wide ; outer Hp marginated. 



Eig. 427. 



14. Ebtjena. Like Buccinum, but the outer Hp not thickened, 



Eig. 426. 



15. Haepa. With varices at regular intervals. Eig. 419. 

 PTJSIA. Sw. A sub-genus of Tiara (Mitra.) (Sw. Malac. p. 320.) 

 PIJSIODOIS'. Sw. A genus of " Lucerninse," Sw, (Helix) thus 



described : " Shell flattened, smooth ; the body-whorl large, and 

 much dilated at the aperture ; spire small, flat, of three or four 

 contracted whorls ; aperture very oblique, sinuated, or obso- 

 letely toothed at the base of the outer lip, which is spreading 

 and sub-reflected ; inner lip obsolete ; umbilicus open. Zonaria 

 Chemn. 132. f. 1188. auriculata, Zool. 111. I. pi. 6." Sw. Malac. 

 p. 330. 



PUSIONELLA. Gray. Eusus Nifal, &c. 



PUSIOSTOMA. Sw. A genus of the family " ColumbeUin^," 

 Sw. Thus described : " general form of Columbella, but the 

 outer lip is only toothed in the middle, where it is greatly 

 thickened ; inner lip convex between the granular teeth ; punc- 

 tata, E. M. 374. f. 4. mendicaria, 375. f. 10. turturiaa, 314. 

 • f. 2. fulgurans. Lam." . Sw. Malac. p. 313. 



PUSTTJLAEIA. Sw. A genus of " Cyprsein^," Sw. thus de- 

 scribed : "Shell generally marked by elevated pustules ; aper- 

 ture narrow and linear ; the extremities more or less produced ; 

 the teeth continued beyond, and frequently forming elevated 

 striae across the Ups. P. Cicercula, P. Globulus." Sw. Malac. 

 p. 324. 



PyCNODUNTA. Eischer. A genus of Brachiopoda. PL xii. 

 fig. 117, 118. 



PYLOEIDEA. Bl. The ninth family of the order Lamelli- 



s 2 



