PSEUDO-RUTILARIA. 



459 



m 



-'-4i 



UN 

 r 



GENUS 124. PSEUDO- 

 RUTILARIA, Grove 

 and Sturt, 1886. 



Valves furnished with spines, con- 

 sisting of 8 to 12 cells or loculi, 

 circular or subcircular, somewhat 

 apiculate laterally at their median 

 portion, arranged in a longitudinal 

 series, the median cell very large, the 

 others decreasing gradually. Girdle 

 face subrectangular, showing the 

 median cell inflated and the terminal 

 prolonged projecting. Frustules 



united many together, and cohering 

 by the terminal cells and by the spines 

 of the median cell. A single species. 



a. b 



Fig. 188. Pseudo-Rutilaria monile. 



a. Valve view. 

 /;. Girdle view. 



P. Monile Gr. and St., 



represented in the text (fig. 188), and which 



is found in the Oamaru deposit (New 



Zealand). 



Messrs. Grove and Sturt think that 



Rutilaria recens Cleve should be added to 

 this genus. In my opinion the latter form differs from the Rutilaria, especially 

 by the absence of the peculiar nodule and from the Pseudo-Rutilaria by its 

 unique cell. This form appears to me to be intermediate between the two 

 preceding genera, and I shall therefore make a special genus, to which I give 

 the name of 



GENUS 125. RUTILARIOPSIS, H.V.H., 1894. 



Valves elliptic, with apices diminuate, 

 prolonged, raised into a point ; surface with 

 strong puncta, distant, scattered, intermixed 

 in the median portion with some strong 

 spines. Margin of valve furnished with a 

 circlet of spines. Girdle face very slightly 

 convex from the apices towards the median 



portion ; apices raised into a point and spines marginal. A single 



species, represented in the text (fig. 189), 



Fig. 189. Rutilariopsis 

 tecens. 



