8 NEWCOMBIA. 



It differs from all other Newcombias by being dextral. Figured 

 from cotypes. 



Series of N. philippiana. 



5. N. PHILIPPIANA (Pfeiffer). 



Shell sinistral, subimperforate, fusiform-turrited, rather thin, 

 longitudinally striate, decussated with somewhat wavy close 

 spiral strise; brown; spire slender, the apex rather acute; suture 

 margined. Whorls 6, the upper flat, streaked with corneous 

 and white, the last whorl more convex, about two-fifths the 

 total length. Columella nearly simple, not folded. Aperture 

 oblique, angularly semi-oval; peristome simple, unexpanded, 

 the margins joined by a very thin callus, the outer margin 

 bordered with brownish, columellar margin dilated above, sub- 

 adnate. Length 15 to 15J-, diam. 6 mm. ; aperture 7 mm. long, 

 3 wide (P/r.). 



Var. b. Smaller, paler, a little more distinctly striated 

 spirally (Pfr. ). 



Sandwich Islands (Frick, Cuming coll.). 



Achatinella philippiana PFR., Malak. BL, iv, 1857, p. 89; 

 Monographia, iv, 559. Newcombia p. , BORCHERDING, Zoologica, 

 p. 103. 



This species is known by the original examples only. 

 Borcherding believes it to be an immature stage of N. perkinsi 

 Sykes, basing this opinion on the smaller size and thin shell as 

 described by Pfeiffer. This view, which seems quite probable, 

 was held by Baldwin and Thwing; but until young perkinsi can 

 be compared with the type of philippiana, and their identity 

 demonstrated, both may be let stand. 



6. N. PERKINSI Sykes. PI. 7, figs. 18, 19. 



" Shell sinistral, narrowly perforate, elongate-fusiform, solid, 

 ashy-brown, or elegantly marked with zigzag streaks of brown. 

 Spire slender, the apex obtuse, smooth. Whorls 6, rather flat, 

 the last about half the length of the shell; suture margined. 

 Columella subplicate. Aperture a little oblique, semioval, sub- 

 angular at the base; peristome simple, the columellar margin 



