PAPUINA-PLECTOPYLIS. 143 



P. gelata Cox, vii, 65. P. pudica Pfr., vii, 69. 



v. maddocksi Braz., vii, 66. P. lienardiana Crosse, vii, 69. 



P. antrorsa Pfr., vii, 67. P. eros Angas, vii, 70. 



vitrea v. Mart., olim. P. redempta Cox, vii, 70. 



P. sachalensis Pfr., vii, 67. P. nigrofasciata Pfr., vii, 71. 



P. leucothoe Pfr., vii, 68. P. donnaisabellse Ang., vii, 71. 



(Group of P. moseleyi). 

 P. moseleyi Smith, vii, 72. P. novsegeorgiensis Cox, vii, 72. 



( Group of P. fringilla). 



P. fringilla Pfr., vii, 73. P. barnaclei Smith, vii, 73. 



Section DENDROTROCHUS Pilsbry, 1894. 



Papuina with the shell imperforate, trochiform, with rhombic aper- 

 ture, the lip thickened within ; columellar lip not expanded or re- 

 flexed. Type P. helicinoides Hombr. & Jacq. 



Soft anatomy unknown. Distribution Solomon Is., New Hebrides, 

 Admiralty Is. and New Ireland. They are arboreal in habit. Bra- 

 zier found P. cyrene in hundreds on the under sides of leaves of 

 small bushes, in Ugi, Solomon Is. 



This is quite a well characterized section of Papuina. According 

 to Hedley the Solomon Islands forms (cleryi, quirosi, zelina, cyrene) 

 will prove to be varieties of one species (see Man. Conch., viii, p. 

 290). 



P. labillardierei Smith, vii, 75. P. cineracea H. & J., vii, 77. 

 P. helicinoides H. & J., vii, 76. cinerarea Rouss. 



v. cleryi Reel., vii, 76. P. cyrene Crosse, vii, 78. 



septentrionalis Sm. P. eva Pfr., vii, 78. 



v. ineridionalis Sm., vii, 77. P. layardi Hartm., vii, 79. 



v. quirosi Cox, vii, 80. P. pyxis Hinds, vii, 80. 



P. zelina Cox, vii, 78. P. crucibulum Pfr., vii, 81. 



Genus PLECTOPYLIS Benson, 1860. 



Plectopylis BENS., Ann. and Mag. N. H. (3), v, p. 243. STOLICZKA, 

 Journ. Asiat. Soc. Beng. xl, (2), p. 217, pi. 15 (anatomy). GODWIN- 

 AUSTEN, P. Z. S. 1874, p. 608. 



Shell depressed, with flat or low-eonimi spire and large umbilicus, 

 dextral or sinistral ; solid or thin, the upper surface generally sculpt- 



