REMARKS ON THE OAMARU DIATOM PAPERS. 389 



Chase for a distinct species. Herr Grunow considers that this 

 stands very near to Tr. repletum, Grev. 



Aulacodiscus Sollittianus, Norm.., var. Nova Zealandica, Gr. and 

 St. Differs widely from A. Sollitianus by its broad, finely punc- 

 tated margin, and by nearly always having three (very rarely two 

 or four) processes. [The authors view of this as a var. of A. 

 Sollittianus is accepted by Mr. Rattray in his monograph on the 

 genus Aulacodiscus (" Jour. Roy. Micros. Soc," June, 1888, p. 

 377). It is figured in the "Atlas" (PI. CXXIV., Fig. 8) as 

 A. nova-zealandicus, Gr. and St.* — E. G.~\ 



Eunotogramma productum, Gr. and St., in Uteris, instead of 

 E. weissii, var. producta, Gr. and St. 



Eunotia striata (Gr. and St.), Grun., instead of Euodia striata, 

 Gr. and St. 



Amphiprora ? ? cornuta, Chase. Xot a diatom. 



Nitzschia Groveii, Grun., instead of Amphiprora rugosa (Petit ?), 

 Gr. and St. 



Synedra Groveii, Grun., instead of S. crystallina, G. and St., 

 nee. Kg. 



Amphora Sturtii, Grun. (A. contracta, ? Gr. and St., nee. 

 Grun.). Differs from J., contracta in its well-marked costse and 

 curved raphe dividiDg the stria?. 



Kavicula hochstetteri, Grun., Alg. Novar., instead of N.placita, 

 Gr. and St. 



Navicula spathifera, Gr. and St., in literis, instead of N. lobata, 

 Gr. and St., that name having been given to a distinct species 

 by Schwartz. 



Grammatophora oceanica, Ehb. This does not seem to occur 

 in the Oaniaru deposit, but another form closely allied to 

 G. insignis, Grun., which Herr Grunow proposes to call G. 

 Oamaruensis. 



Gephyria incurvata, Arnott. The older name for this, and 

 therefore to be preferred, is Entopyla australis, Ehr. Herr Grunow 

 has not met with this, but a form having much narrower valves, 

 which he names var. Oamaruensis. He has also seen another 

 species with broad elliptical valves, which he will describe 

 elsewhere. 



Isthmia enervis, Ehr. Besides the type form, another occurs 



* Schmidt remarks that it would be more grammatically correct if this 

 were altered to A. Novce Zealandice. 



