356 ADDITIONS AND CORRECTIONS. 



mellar margin dilated, adnate. Length 9, diam. 4% mm., 

 aperture 4% mm. long, 2 l / 3 wide. Sandwich Is., Frick, in 

 Cuming coll. (P/r.). 



Achatinella irregularis PFR V P. Z. S., Lond., 1855, p. 205 

 (Feb., 1856) ; Monogr. Hel. Viv., iv, 546. 



This unfigured species has been considered an Amastra by 

 authors who have noticed it. Mr. C. Montague Cooke agrees 

 with me in referring it to Leptachatina. It is almost cer- 

 tainly identical with L. fusca Newc., p. 89, which has priority. 



P. 21. LEPTACHATINA SAXATILIS (Gul.). Add the synonym 

 L. saxitilus Hartman, Proc. A. N. S., Phila., 1888, p. 55. 



P. 52. LEPTACHATINA CINGULA (Migh.). Add: PI. 12, fig. 5. 



P. 54. LEPTACHATINA VENTULUS (Fer.). In line 5 from top 

 add the words " columella short " between " within " and 

 " umbilical." Add the synonym Achatinella manoaensis 

 Newc. Ms., PFR., Monographia, iv, 545 ; vi, 177 ; viii, 235 ; 

 Nomencl. Hel. Viv., p. 311, no. 159. This name has been 

 quoted as a synonym in several works, but no description has 

 been published. 



P. 73. LEPTACHATINA LEUCOCHILA. In 12th line from bot- 

 tom replace " his " by " this." 



P. 74. LEPTACHATINA STRIATULA (Gld.). PI. 12, figs. 4, 

 7 (not 4, 5). 



P. 75. PI. 12, fig. 5 does not represent Ach. clara Pfr., as 

 stated on p. 75. It is Leptachatina cingula Migh., p. 52. 



P. 92. LEPTACHATINA PETILA Gul. PI. 11, fig. 9 represents 

 the type specimen ; copied from Sykes. 



P. 99, last line : type of F. longa is 10214 A. N. S. P. 



P. 111. CARELIA RIGIDA is, according to Dr. Cooke, a fossil 

 species from the eastern or northeastern side of Hanalei; 

 C. turricula from the center and western side of the valley. 



PTERODISCUS HELICIFORMIS (Ancey). PI. 36, figs. 1, 2, 3. 



See page 127. Three specimens, part of the original lot, 

 from the collection of D. D. Baldwin, are now before me. 

 They are less fragile than other Pterodisks. The embryonic 

 shell, of fully 2 whorls, measures 2.3 mm. in diameter. The 

 last third of a whorl has a peripheral cord, and is grooved 



