18 FLAMMULINA. 



Animal carrying the shell subcentrally, mantle edge slightly 

 reflected over the peristome of the shell, with an even margin ; tail 

 depressed, rounded, with a mucous gland (Hutt.~) 



Jaw delicate, more or less arcuate, with numerous vertical plaits, 

 which generally crenulate the lower margin (pi. 2, fig. 14, F. corneo- 

 fulva. PI. 2, fig. 18, F. c/m-on.) 



Dentition : Rhachidiau teeth with the mesocone well developed, 

 ectocones small (absent in corneofulva}. Lateral teeth similar to the 

 central. Marginal teeth tricuspid (sometimes 4-cuspid), in some 

 species the cusps coalescing on the outer teeth (pi. 2, fig. 16, F. 

 corneofulva. PI. 2, fig. 17, F. chiron.) 



Distribution : New Zealand and Lord Howe Island. 



The contour of the shell is between Hyalina and Vifrina, and in 

 texture it is nearly as fragile as the latter. Both striped and uui- 

 colored species occur. In typical Flammulina the surface is smooth 

 and polished. In the section Calymna Hutton (Tr. N. Z. Inst. 

 xvi, p. 199, 1884), the surface is finely striated. PI. 3, figs. 20-22 

 represent G. costulata Hutt., the type of Calymna. 



F. compressivoluta Rv. i, 128. F. jacquenetta Hutt. viii, 76. 



omega Pfr. F. perdita Hutt. viii, 76. 



F. cornea Hutt. viii, 75. F. crebriflammis Pfr. i, 130. 



F. zebra Le Guill. viii, 76. F. corneofulva Pfr. viii, 76. 



phlogophora Pfr. F. novane Pfr. 



flammigera Pfr. F. chiron Gray, viii, 77. 



multilimbata H. & J. F. masters! Braz. viii, 294. 



F. costulata Hutt. viii, 73. F. feredayi Sut. viii, 74. 



F. lavinia Hutt. viii, 74. v. glacialis Sut. 



F. olivacea Sut. viii, 75. 



Subgenus HEDLEYOCONCHA Pilsbry, 1893. 



Shell perforated, trochiform, keeled, thin, with oblique ribletsand 

 minute spiral lines. Aperture angu late-lunate, peristome simple, 

 thin, slightly expanded at the columella. Type H. delta Pfr. 



Animal 13 mill, in length, color white almost translucent ; pos- 

 terior part of body sharply keeled, terminating in a mucous gland ; a 

 shaUoiu furrow starts from the end oj 'the tail and runs forward on each 

 side to the lips, the surface below this furrow being smooth, above it 



