Hutton. — On Marine Mollusca. 215 



CyCLOSTREJIA FLUCTUATA, 11. S, 



Shell small, rather solid, spirally striated, not iridescent : colour yellow- 

 ish white or pale brownish with irregular waved longitudinal bands of 

 brown, which are rather indistinct. Spire depressed, obtuse ; whorls 4, 

 rounded, distinctly and closely spirally grooved, the umbilical region smooth ; 

 suture scarcely impressed: umbilicus narrow, deep. Aperture sub-rotund ; 

 peristome acute, not continuous, the lower lip thickened. Operculum 

 rather thick, sub-calcareous, translucent, white, round, of about six slowly 

 increasing whorls. Diameter "11 inch. 



Hab. Foveaux Straits. 



Acjlea clngulata, n. s. Plate xi., fig. 5. 



Shell moderately thick white oval, conical ; apex about one-third of the 

 length from the anterior end : about 30 to 50 low radiating ribs. Interior 

 white, the margin light brownish pink banded with white. Length "56 ; 

 breadth "45 ; height *2 inch. 



Dentition. Teeth very short and broad, the recurved portions three, 

 arranged in an oblique line so that the anterior on each side are in juxta- 

 position, while the posterior are widely separated ; all are short and blunt. 

 Basal plates imbricating ; the posterior margin nearly straight, the exterior 

 margin slightly, and the anterior margin deeply sinuated : no accessory 

 teeth. 



Hab. Lyttelton and Dunedin. 



The shell in this species much resembles that of A. lacunosa, Eeeve 

 ( = corticata, mihi), but the ribs are finer and the margin differently 

 coloured ; the teeth however are very different. It may prove to be a 

 variety of A. rubiginosa, the dentition of which is not yet known. 



Kellia citrina, n. s. 



Shell minute, ovato-rotund, smooth, finely concentrically grooved, sub- 

 equilateral ; pale yellowish. Eight valve without any cardinal teeth, the 

 anterior lateral swollen and hollowed in the middle ; posterior lateral 

 sniall. Left valve with a small anterior cardinal tooth ; the laterals on 

 each side thin. Length -08 ; height -07 inch. 



Hab. Tamaki Heads, near Auckland (T. F. Cheeseman). 



Kellia sax guinea, n. s. 



Shell minute, ovato-rotund, smooth, finely concentrically grooved, sub- 

 equilateral ; yellowish- white, the umbones bright pink. Eight valve with 

 an anterior broad triangular cardinal tooth, with a projection on its anterior 

 face ; anterior lateral small ; posterior laterals two. Left valve with two 

 small cardinal teeth disjoined at the base ; anterior lateral single, getting 

 thicker below ; posterior lateral single, bifid at the end. Length -08 ; 

 height -07 inch. 



