32 



LAMELLIBEANCHIATA. 



Var. B. — The imbricating striae taking the form of pointed scales 

 on the ribs only ; middle ribs larger. 

 Localities. — Oamaru ; Caversham. 



113. P. crawfordi, sp. nov. Sub-orbicular, ineqqivalve, longer 

 than high ; right valve convex, with five or six broad plications, the 

 central ones deep near the umbo, but all getting shallow towards the 

 margin, with numerous radiating sub-scaly ribs, crossed by fine con- 

 centric striffi ; left valve compressed, flattened at the umbo, with four 

 plications ; exterior markings like the right valve ; ears sub-equal, with 

 radiating rugose ribs. Height, 2 ; length, 2-35. 



Localities. — Maunga-pakeha Taipo, East Coast, Wellington. 



114. P. athleta, Zittel, Toy. -Novara, Falce., p. 49, pi. x., / 1. 

 Sub-orbicular ; sub-equivalve, both valves with ten principal and 

 other intermediate ribs ; ears large, equal. Height, 7 ; length, 7"4. 



Localities. — Motupipi (Hochstetter) ; Tata Island ; Wangape Lake, 

 Lower Waikato ; Broken E-iver (l). 



115. P. burnetti, Zittel, Yoy. Novara, Fal(d., p. 51, pi. x., f. 2. 

 Sub-orbicular, equilateral, convex, with from four to seven plicae, and 

 numerous radiating ribs ; ribs unequal, rounded ; interstices sub-equal ; 

 the whole wdth fine concentric striae. Height, 1-2 ; length, 12. 



Localities. — Motupipi (Hochstetter) ; Oamaru ; Tata Island ; Ta- 

 kaka ; Kawau ; Winton ; Eaglan ; Castle Point, East Coast, Wellington. 



116. P. polymorphoides, Zittel, Toy. Novara, Palce., p. 51, 

 pi. xi., f. 3. Ovate, equilateral, compressed, margin inflexed, quadri- 

 plicate ; plicae obsoletely striated or sub-smooth ; ififlexed margin 

 striated; ears small, sub-equal. Height, "65; length, "6. 



Localities. — Waikato, South Head ; Weka Pass ; Cape Eodney ; 

 Winton. 



117. P. (Dentipecten) VellicatUS, Hutton, Cat. Marine 

 MoU.,p.H2. 



Localities. — Wanganui (u) ; Shakespeare Cliff ; Castle Point. 



118. P. zittelli, Fecten {belonging to tlie group P. pleuronectes), 

 Zittel, Voy. Novara, Falce., p. 53. >Sub-orbicular, compressed, smooth, 

 with eleven internal ribs, which do not reach to the margin of the 

 valves, the two upper ones very short ; ears equal, obtuse, smooth. 

 Height, "85 ; length, "8. 



Localities. — Poverty Bay (l) ; Whangape Lake, Waikato ; coast 

 between Eaglan and Port VYaikato ; Papakura (Hochstetter) ; Cape 

 Kidnappers ; Cobden. 



HINNITES. 



Irregular, adherent by right valve ; ears unequal, hinge margin 

 straight. 



119. H. trailli, sp. nov. Solid ; irregularly ovate (sub-orbicular 

 wlien young) ; obscurely radiately ribbed, and irregularly concen- 

 trically folded and striated ; hinge straight, edentulous ; cartilage pit 

 deep, elongated, curving backwards ; ears sub-equal, transversely stri- 



