Hurron.—On New Zealand Land Mollusca. 189 
8. Hairy species. Charopa, Thera, and Thalassia portia. 
4. Ribbed species in Pupa, Patula, Thera, Fruticicola, Strobila, Amphi- 
doxa, Charopa, Psyra, and Phacussa. 
5. Smooth or striated species in Microphysa, Endodonta, Phrix- 
gnathus, Omphidoza, Pyrrha, Gerontia, Therasia, Thalassia, Paryphanta, 
and Elea. i 
6. Surface malleated in RAytida. 
7. Trochiform species in Thera, Endodonta, Phrixgnathus, Leptopoma, 
Omphalotropis. 
` 8. Shell turreted in Realia, Pupa. 
9. Shell depressed but keeled in Endodonta, Phrixgnathus, Amphidowxa, 
Therasia, Thalassia. ; 
10. Discoidal or very depressed species, with rounded periphery in 
Patula, Microphysa, Fruticicola, Phrixgnathus, Amphidoxa, Gerontia, Charopa, 
Psyra, Phacussa, Paryphanta, Elea. 
11. Species with very wide umbilicus in Patula, Phrixgnathus, Gerontia, 
Amphidoxa, Charopa, Paryphanta, Elea, Cyclotus. 
12. Species with narrow umbilicus in Fruticicola, Stobila, Phrizgnathus, 
Amphidoxa, Therasia, Thalassia, Phacussa, Paryphanta, Rhytida. 
18. Imperforate or subperforate species in Carthea, Fruticicola, Endo- 
donta, Phrixgnathus, Amphidoxa, Psyra, Therasia, Pyrrha, Phacussa, Vitrina, 
Trochomorpha, Paryphanta. 
14. Species with spiral sculpture in Patula egesta, Charopa ida, Thalas- 
sia obnubila, Cyclotus, Cyclophorus, and Omphalotropis. 
15. Sinistral species in Parillus and Diplommatina. 
Sec. GONIOGNATHA. 
Jaw in separate pieces, the median one often triangular : marginal teeth 
quadrate, usually broader than long, with several points. 
Genus Carthea, Hutton. 
Animal heliciform. Jaw formed by many quadrate, overlapping plates, 
each higher than broad. Shell conoidly globose, the whorls slowly increas- 
ing; imperforate or narrowly perforate; aperture lunate ; peristome 
straight, acute, the columellar margin rather reflexed. 
C. xrwi, Gray (1848). H. irradiata, Gould (1846). 
Closely striated, periphery rounded. White with irregular radiating 
purplish streaks. Diameter ‘4. Dentition, 28-1-28. 
The animal is unknown. 
North Island.—Hokianga ; Bay of Islands (Gould) ; Omaha (T. Kirk) ; 
Titirangi (Cheeseman) ; Napier ; Wellington (T. W. Kirk). 
Allied to Helix radiaria from the Solomon Islands. 
