SuTER. — On Nexo Zealand Pleui'otomidaB. 77 



cave ; canal moderate, aperture elongately oval, posterior 

 sinus very slight. Animal unknown. 



Length, 9 to 13 mm. ; breadth, 3 to 4-3 mm. 



Type in the Canterbury Museum. 



Hab. Waiwera, near Auckland. Found also in the Plio- 

 cene of New Zealand. 



Section Thesbia, Jeffreys (1867). 

 Shell thin, rather smooth, somewhat tumid, with a short 

 spire and irregularly contorted apex ; aperture slightly ex- 

 panded, the outer lip thin, with distinct sinus ; canal short ; 

 columella simple. 



Daplinella membranacea, Watson. 



Watson, "Challenger" Exp. Rep., pt. 42, vol. xv., p. 333, 

 pi. xxvi., fig. 9 (1886). 



Shell singularly unlike a Pleurotoma, being broad, short, 

 tumid, and membranaceously thin ; spire short ; whorls with 

 fine, irregular, hair-like lines of growth ; crossed by very 

 slight, remote, irregular spirals. Colour white. Base long, 

 gradually contracted ; snout broad, lop-sided ; sinus close to 

 the suture, deep, wide. 



Length, 22 mm. ; breadth, 13"5mm. 



Type in the British Museum (Nat. Hist.). 



Hab. In 1,100 fathoms, off Cape Turnagain (Stat. 168, 

 Chall. Exp.). Obtained at no other locality. 



Daphnella xanthias, Watson. 



Watson, " Challenger" Exp. Rep., pt. 42, vol. xv., p. 334, 

 pi. xxvi., fig. 10 (1886). 



Shell oval, biconical, a little tumid; spire high and conical, 

 base long and pointed. Surface smooth, feebly spiralled, 

 spirals flat threads, absent above the shoulder ; fine hair-like 

 lines of growth. Whorls shouldered ; sinus at the suture, 

 deep, broad. 



Length, 19-5 mm.; breadth, 10 mm. 



Type m the British Museum (Nat. Hist.). 



Hab. In 1,100 fathoms, off Cape Turnagain (Stat. 168, 

 Chall. Exp.). Obtained at no other locality. 



EXPLANATION OF PLATE IIL 

 Pig. 1. Surcula verrucosa, Suter ; x 3. 

 Pig. 2. Mangilia subaustralis, Suter ; x 3. 

 Fig. 3. Ma7ig ilia Jlexicostata, Suter ; x 10. 

 Fig. 4. C lathurella subabnormis, Snlei ; x 4. 

 Pig. 5. Clathurella nodicincta, Suter ; x 4. 

 Fig. 6. Daphnella substriata, Suter ; x 6. 



