THE VOYAGE OE H.M.S. CHALLENGER. 
896 
Clavulina angularis, d’Orbigny (PL XLVIII. figs. 22-24). 
Clavulina angularis, d’Orbigny, 1826, Ann. Sci. Nat., vol. vii. p. 268, No. 2, pL xii. fig. 7. 
„ tricarinata, Id. 1839, Foram. Cuba, p. 114, pi. ii. figs. 16-18. 
Valvulina angularis, Jones and Parker, 1860, Quart. Journ. Geol. Soc., vol. xvi. p. 305, No. 92 
Clavulina triquetra, Reuss, 1864, Denkscbr. d. k. Akad. Wiss. Wien, voL xxiii. p. 6, pi. i. fig. 1. 
In this species the angular outline is not confined to the triserial portion of the test, 
as in Clavulina parisiensis, but is retained during the growth of the Nodosarian segments, 
so that the entire shell has the form of a more or less regular three-sided prism. The 
little fossil figured by Reuss ( loc . cit.), under the name Clavulina triquetra, differs in no 
respect from the recent specimens. 
Clavulina angularis is found in the shore-sands of Cuba and Jamaica (d’Orbigny), and 
in dredged material from the Mediterranean and the Red Sea. It occurs at one point in 
the South Atlantic, Station 122, off Pernambuco, 350 fathoms, and at numerous 
localities amongst the islands of the Eastern Archipelago, in shallow water, from 8 to 28 
fathoms. 
It may be inferred from Reuss’s specimens, which were obtained from the Nummulitic 
beds of Oberburg in Styria, that the species made its appearance about the same time 
as its congeners Clavulina communis and Clavulina parisiensis, that is to say, near the 
commencement of the Tertiary epoch. 
Clavulina angularis, var. difformis, nov. (PI. XLVIII. figs. 25-31). 
At one locality, Nares Harbour, Admiralty Islands, nearly under the equator, a large 
proportion of the Clavulince pertaining to the species last described, instead of presenting 
the normal triangular contour, assume a number of irregular and anomalous forms, 
amongst the commonest of which are the four- and five-angled varieties represented in 
figs. 25-31. It has been thought better to distinguish these by a subordinate name, 
inasmuch as such specimens found alone would almost certainly be supposed to belong to 
an independent species, rather than to a mere local variety. 
Clavulina cylindrica, Hantken (PL XLVIII. figs. 32-38). 
Clavulina cylindrica, 1 Hantken, 1875, Mittheil. Jabrb. d. k. ung. geol. Anstalt., vol. iv. p. 18, 
pi. i. fig. 8. 
The drawings of this species in PL XLVIII. suggest, rather than fully illustrate, the 
diversity in size and contour which the test assumes. Specimens vary in length from 
■jljjt h to nearly -|th inch (0'5 mm. to 5'0 mm.), and between the long, tapering, 
1 In the Tableau Methodique, Ann. Sci. Nat., vol. vii. p. 268, No. 1, the name Clavulina cylindrica is applied 
to one of the fossil forms found in the Subapennine Tertiaries ; but as it is unaccompanied in that work by either 
description or figure, there is nothing to prevent its transfer to von Hantken’s species. 
