628 MESSES. E. HEEON-ALLEN AND A. EAELAND ON THE 



14 Stations. 



Almost universally distributed and often very abundant. At nearly all the Stns. the 

 specimens are quite typical ; there are, of course, many passage-forms intermediate 

 between this species and T. agglutinans and T. conica. At Stu. 7 a curious variety 

 marked by a depressed median line occurs. The best and most typical examples were 

 at Stns. 2, 3, 4, and 10. 



169. Textularia liauerii d'Orbigny. (Pi. XLVII. %s. 21-23.) 



Textularia hauerii d'Orbigny, ISiG, FPV. p. 250, pi. xv. figs. 13-15. 

 „ gramen (pars) Brady, 1884, FC. p. 365. 



12 Stations. 



A transition-form, which we figure, is generally distributed, and at the Stns. where 

 it occurs is often one of the most abundant and typical. It seems to come nearer to 

 d'Orbigny's T. hauerii than to any other Textularian. Brady regarded T. hauerii as 

 merely a modification of T. gramen {ut supra) characterized by less angular edges, but 

 the Kerimba specimens are sufficiently marked and divergent from T. gramen, as 

 represented in these dredgings, to render the separation of the specimens desirable. In 

 the somewhat rough texture of the shell their affinities appear to lie rather in the 

 direction of T. candeiana than of T. gramen. 



The Kerimba specimens of T. hauerii have, as a rule, about eight pairs of chambers 

 regularly increasing in breadth and thickness, and with the sutural lines somewhat 

 depressed owing to the inflation of the chambers. Marginal edge lobulate and varying 

 from rounded in the latter portion of the shell to acute or subcarinate in the initial 

 portion. Suiface-texture somewhat coarse, but neatly agglutinate. The species is 

 most abundant at Stns. 1 and 12, reaching its best proportions at the latter. T. hauerii 

 was recorded by d'Orbigny from the Tertiaries of Vienna. It is probably widely dis- 

 tributed, but has not been separated from the records of T. gramen. 



170. Textularia foliacea, sp. n. (Pi. XLVII. figs. 17-20.) 



9 Statio'iis. 



Test free, highly compressed, consisting of seven to nine pairs of chambers regularly 

 increasing in width so as to give a leaf-shaped outline to the shell. Sutural lines 

 depressed, often strongly marked, but at times very obscure, and obliquely set, so that 

 the tapering off of the ultimate pair of chambers gives the characteristic diamond or 

 foliaceous outline. Median line of the shell depressed below the marginal edges, 

 aperture small and regularly textularian. Test composed of sand-grains and other 

 adventitious substances firmly and neatly cemented together, but with a rough external 

 surface. 



This is one of the most characteristic of the Kerimba Textulariidae, though not 



