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



4 Stafioiis. 



D'Orbigny utilized this specific name in 1826 (TMC. p. 262. no. 10) for a form which 

 he did not in any way describe, but which according to the "Planche inedite " as figured 

 by Fornasini (Eiv. ItaL Paleont. 1901, p. 105, pi. iii. fig. 3) represents a Textu- 

 laria of sagittula type, but with rounded edges. D'Orbigny's name being a nomen 

 midum must lapse, and there is the less reason to regret this as Eeuss' figure represents 

 a well-marked and distinct t5'pe. 



T. nir/osa is very sparingly represented at Kerlmba. This is noteworthy, as the 

 species is generally fairly abundant in the neighbourhood of coral-reefs. The best 

 series of specimens was obtained at Stn. 11, where it attained a large size. Other good 

 individuals at Stn. 12. At both these Stns. the characteristic flexed sutural edges of 

 the chambers were strongly developed. At Stn. 9 the species is represented by a 

 weaker form, in which the characteristic flexure is less raarked and the specimens show 

 signs of affinity to T. haiierii d'Orbigny. 



At Stn. 11 a few abnormal individuals were found, which we figure. They com- 

 mence with a triserial or gaudryine arrangement of the chambers, which at half-growth 

 become converted into typical T. rugosa. 



164. Textularia agglutinans d'Orbigny. 



Teidularia aijghitinavs d'Orbigny, 1839, FC. p. 144, pi. i. figs. \7, 18, 32-34. 

 „ „ Parker &"jones, 1865, NAAF. p. 369, pi. xv. fig. 21. 



Mobius, 1880, FM. p. 93, pi. ix. figs. 1-8. 



Brady, 1884, FC. p. 363, pi. xliii. figs. 1-3; vars., figs. 4, 12. 



Egger, 1893, FG. p. 26~, pi. vi. figs. 1, 2. 



Goes, 1894, ASF. p. 35, pi. vii. figs. 281-4 & 294-303. 

 ,, „ Fornasini, 1895, BR., p. 657 et seq., plate, figs. 3-6. 



15 Stations. 



Universally distributed and often abundant and typical. The best specimens occur 

 at Stns. 1, 6, and 9. There is as usual a wide variation, based principally on the 

 relative length and breadth of the shell, the species passing imperceptibly into the 

 variety T,po7Tecta Brady, on the one hand, and into the broader and smoother T. gramen 

 d'Orbigny, on the other. At Stn. 3 the tendency is towards T. gramen. At the majority 

 of the Stns. the species is marked by a coarse and roughly agglutinate test, strongly in 

 contrast with T. gramen, which at nearly all the Stns. is smoothly and neatly built. 

 At Stn. 7, however, specimens of T. agglutinans, which are rather smaller than the 

 Kerimba average, are of a smooth neat type. At Stn. 11, where the species attained 

 very large proportions, some of the individuals had the appearance of having spiro- 

 plectine initial chambers, but they are so small that the feature is difficult to confirm. 

 At Stns. 1 and 12 monstrous individuals, in which additional chambers have been added 

 as outgrowths from various portions of the shell, have been found. 



