2/6 Occasional Papers Bcrnice P. Bishop Museum 



malleate. The parietal plate is nuich narrower and less develoi)ed 

 than in Cat in el la paropsis. 



Length 1 1.2. diameter 7.6 mm. 



Oahu : !Mount Kaala (Thaanum). Type and paratype No. 

 36915. Bishop ■Museum; paratypes. Thaanum collection. 



LAXISUCCINEA new genus 



The shells arc succineiform, the last whorl distinctly and I)luntly 

 angulate below its periphery, flattened ventrally. and forming a platform at 

 and below the inner margin of the aperture. The margin of the aperture 

 is entirely free and is not appressed to the last whorl as in otlier Succineidae. 



Laxisticcinea is an interesting group of this rather conservative 

 family. The separation of it from other Succineidae is based 

 entirely on shell characters, but these characters appear to be of 

 sufficient importance to necessitate the forming of a new genus. 

 Unfortunately, the only two species which have been found are fos- 

 sil. Both species are from the island of Kauai and were found in 

 Pleistocene or Recent deposits near the sea. and each of the species 

 was confined to a very limited locality. A search for living speci- 

 mens was made in the vicinity, but none was found. 



Type: Lasisiicciuea libera new species. 



Laxisuccinea libera new species. PI. XX\'. 6. 



The shell is ovate, in its fossil state dull white with a sligiit yellowish 

 tinge, irregularly marked with minute lines of growth. Whorls almost two; 

 the first minute, very convex, and having a deep narrow suture ; the last 

 large, increasing very rapidly and occupying nearly the whole of the shell, 

 bluntly but distinctly angled below the periphery and flattened ventrally just 

 below this angle, its last fourth free, cornucopia-like. Aperture nearlj- 

 ellipsoidal in outline, its margin free and erect, not attached either to the 

 columellar or parietal wall. There is no indication of a parietal plate. 



Length, 7.8, diameter 5.5 mm. 



Kauai : in Pleistocene or Recent deposits in road cutting near 

 the southern extremity of the Blanamaulu flat (C. S. Dole and 

 Cooke). 



Type No. 19539. Bishop Aluseum ; paratype Academy of Nat- 

 ural Sciences of Philadelphia. 



One whole specimen and five or six frag'ments are all the 

 material I have been able to study, although to procure more mate- 

 rial of this species two special trips were made to the identical spot 



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