59 
Philippinella differs from Parmuneulus in having either a dorsal or lateral 
keel, and generally in the external form of the body, and in the form of the generative 
organs (cp. figs. 1—16, pl. VII). 
Parmella, 
4 
| Philippinella. Mariaella, 
| Pa 
Parmacochlea. % 
_ \ 24 
\ 5 
| 7% 
| | 
Damayantia. 
1} 
Collingea. | | 
| | Parmunculus, 
| | 
Mieroparmarion. | Pre... 
| | 
Parmarion. 
Bibliography. 
1. MÖLLENDORFF, OÖ. v. — Mariaella Gray. 
Nachr. d. Deutsch. Malak. Gesell., 1899, pp. 20—22. 
2. Quankas, J. F. | 
und Diagnoses specierum novarum ex insulis Philippinis. 
MÖLLENDORFF, O. V. | 
Ibid., 1894, pp. 81-121. 
3. SEMPER, C. — Reisen im Archipel der Philippinen. 
Landmollusken. Bd. III, 1870. 
4. SIMmROTH, HEINRICH. — Ueber einige Parmarion-Arten. Zoologische Ergebnisse einer 
Reise in Niederländisch-Ost-Indien, 1893, Bd. III, pp. 100—111, 
T. VI—V11. 
Semper, Philippinen, II. vırr. (v. Möllendorff, Landselnecken.) 9 
