136 GENERA AND SPECIES. 



Polycera. (POLYCERIDM.) Plate xxxiii. 



604. quadrilineata, f in. white, occasionally spotted with black. 

 ocellata, J in. black, spotted with white. 



lessoni, J in. green or yellow, with yellow tubercles. 



Poromya. (POROMYIDJE.) Plate xv. 

 179. granulata, J in. x J in. inside pearly and lineated, scars triangular 



Proctonotus. (sEOLIDID^E.) Plate xxxi. 



594. mucroniferus, J in. gill processes ovate and mucronated, and 



white with yellow gland in centre. 



Propilidium. (LEPETID^E.) Plate xxi. 



323. ancyloides, -fa in. oval with compressed sides, thin laminar 



partition in interior, opening towards the 

 anterior half. 



Psammobia. (PSAMMOBIID&.} Plate xii. 



136. tellinella, i in. x f in. yellowish white with violet and pink, finely 

 striated behind. 



140. costulata, f in. x in. yellowish white with purple, strongly ribbed 



behind. 



141. ferroensis, iin. x i in. pink with yellow and white. 



142. vespertina, 2% in. x i|in. yellowish white with brown and lilac. 



PunctureUa. (FISSURELLID^.) Plate xxi. 



328. noachina, J in. beak twisted to the left, slit lanceolate, 



covered internally by a sheath. 



Pupa. (PUPIDM.) Plate xx. 



288. marginata, f in. mouth with i tooth, a white rib behind 



the outer lip, suture deep. 



291. umbilicata, g in. mouth with i tooth, suture shallow and 



oblique. 



289. ringens, $ in. mouth with 5 folds. 



290. secale, % in. mouth with 8 or 9 teeth, 2 or 3 on the 



pillar, 2 on the pillar lip and 4 inside the 

 outer lip. 



Purpura. (MURICID&.) Plate xxvi. 



508. lapillus, i^ in. whorls 6 or 7, mouth oval, canal deep, with 



a corresponding notch outside. 



509. hamastoma, i in. orange coloured mouth and 2 rows of 



tubercles. 



