598 THE VOYAGE OF H.M.S. CHALLENGER. 
with short irregular spines. It will be seen by the annexed woodcut, copied from a pencil 
sketch of a living specimen, that during its pe]agic existence the test is furnished with 
delicate needle-like spines ; and the short points observed on the fossils are probably 
nothing more than the truncated ends of these. 
Fio. 17 . — Globigerina marginata, Reuss. Surface specimen taken in tlie tow-net, off New Guinea. 
From a sketch by Mr. Wild. 
I am unable to supply details as to the geographical distribution of Globigerina mar- 
ginata in the living condition. It is an exceedingly rare species, and is distinguished with 
difficulty from its isomorph Pulvinulina menardii. 
As a fossil it has only been found hitherto in deposits of Cretaceous age. 
Globigerina linnceana , d’Orbigny, sp. (PI. CXIV. fig. 21, a-c. Cretaceous speci- 
men, PI. LXXXII. fig. 12, a.b.). 
Rosalind linnceana, i d’Orbigny, 1839, Foram. Cuba, p. 106, pi. v. figs. 10-12. 
„ canaliculata, Reuss, 1854, Denkscbr. d. k. Akad. Wiss. Wien, vol. vii. p. 70, pi. xxvi. 
fig. 4, a.b. 
The following is d’Orbigny’s description of this species : — “ Coquille suborbiculaire, 
tres deprimee, bicarende sur son pourtour, un peu concave en dessous, fortement ombi- 
1 D’Orbigny writes Linneiana in the letterpress, Linnei on tbe plate, and Linnceana in the index, of the Spanish 
edition of the “ Cuba ” memoir ; in the French edition Linneiana and Linnceana both appear ; of these the latter 
is certainly preferable. 
