1857.] PHILLIPS ESTUARY SANDS, SHOTOVER. 239 



base to nearly the top of the hill. They have, however, never been 

 seen by me in the very uppermost sandstones, about 20 feet thick. 



The layers of these cherts, sandstones, geodes, clays, loam, and 

 ochre are very irregular in extent and thickness, yet not in such a 

 way as to suggest more than gentle current-action. There is very 

 little false-bedding ; the layers are mostly undulated, and the con- 

 cretionary tendency of the oxide of iron has produced ramifying and 

 geodic masses much harder than the rest. The shells are now almost 

 confined to these hard irony masses, perhaps because there only pre- 

 served from destructive solutions. The white sands and white clays 

 are in continuous deposits, the latter in very thin laminae. 



The organic remains hitherto found in the Upper Sands of Shot- 

 over, and especially in the irony parts of the deposit, consist of — 



I. Coniferous wood in fragments. 



II. Crustacea. 



Cypris 1 It seems to be recognized in some of the minute hollows 

 which abound in the iron-bands. 



III. Conchifera. 



1. Unio Stricklandii, new species. Outline transversely ovate, 

 without posterior sinuosity ; beaks depressed ; ligament very pro- 

 minent ; posterior area marked by numerous and regular rugae. 

 (PI. XIII. fig. 3.) 



It differs from XI. valdensis in figure and in the characters about 

 the ligament and posterior slopes. The beaks are much eroded. 



Breadth above 2 inches ; length a little above half the breadth. 



Found by Mr. Strickland 20 or 30 feet below the top of Shotover 

 Hill. 



2. Unio subtruncatus ?, Sow., Fitton's Memoir, pi. xxi. fig. 15. 

 Shell very thin, with delicate transverse striae. (PI. XIII. fig. 4.) 



The shell figured in Fitton's Memoir agrees exactly in shape, but 

 does not show the external surface. 



3. Cyrena media, Sow. M. C. pi. 527. fig. 2 : so it appears to me. 

 (PI. XIII. fig. 5.) 



Other forms of Conchifera occur, but are not clearly made out. 



IV. Gasteropoda. 



1. Paludina elongata, Sow. M. C. pi. 509. figs. 1, 2. Rare. 



2. Paludina Sussexiensis ?, Mantv, Fitton's Memoir, pi. xxii. 

 fig. 6. Rare. (PI. XIII. fig. 6.) 



Some specimens are shorter than the figure, and have a little the 

 air of Natica. 



3. Paludina? subangulata, n. sp. (PI. XIII. fig. 7.) Ovato- 

 conical, the volutions slightly angular or subcarinate, and striated 

 spirally above the carina, not below it. Frequent. 



The obscure carina sometimes appears on shells quite deficient of 

 spiral striae ; they are perhaps worn specimens. 



