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



with secondary growth in the form of short blunt spines which mark the outlines of 

 the chambers. These processes are more numerous on the superior than on the 

 inferior surface. The umbilical recess of the shell is tilled with a dense growth of 

 separate spines. Aperture obscure, but apparently a slit on the inner margin of the 

 linal chamber, hidden by secondary growths. 



This strongly marked little species is sparingly distributed, but fairly abundant at 

 the Stns. where it occurs, especially at Stns. 2 h and 8. It has sonie resemblance to 

 jB. erinacea, but differs therefrom in the greater number of chambers, the highly 

 convex superior surface, and in the entire absence of prolonged spines, which are 

 replaced by a dense growth of acute papillae which give the appearance of a rasp to 

 the surface of the shell when viewed under a high power. The species occurs in 

 shore-sand from Sandoway, Arakan Coast, Burma, and also in shallow water at 

 Segaar, New Guinea. From this latter locality we have also double (or budded) 

 specimens. 



Breadth •25 to -32 mm., height '2 to •23 mm. 



426 «. Eotalia duMa d'Orbigny. 



Rotalia dubia d'Orbiguy, 1826, TMC. p. 274, no. 34. 



„ Fornasmi, 1908, SON. p. 46, pi. i. fig. 14. 



(See our observations upon this form on p. 546.) 



Calcakina d'Orbigny. 



427. Calcariiia spengleri (Liune). 



Nautilus spenyleri Litiiie, 1767, etc., SN. 1788, p. 3371. no. 10. 

 Calcarina spengleri d^Orbigny, 1826, TMC. p. 276, no. 4. 



„ ,, Brady, 1884, FC. p. 712, pi. cviii. figs. 5, 7. 



„ „ Egger, 1893, FG. p. 423, pi. xix. figs. 4-6. 



„ Millett, 1898, etc., FM. 1904, p. 597. 



„ „ Dakin, 1906, FC. p. 239. 



1 Station. 



One good and typical specimen from Stn. 11. The extreme rarity of this species is 

 very noteworthy, as it is generally frequent, or even abundant, in tropical shallow 

 waters — in the eastern seas, at least. Millett records it as not uncommon in some 

 of the Malay gatherings, and we have found it abundant in shore-sands from Burma 

 and in many dredgings in the Indian and Pacific Oceans. 



428. Calcarina defrancii d'Orbigny. 



Calcarina defrancii d'Orbigny, 1826, TMC. p. 276. no. 3, pi. xiii. figs. 5-7. 

 Rotalia defrancii Mobius, 1880, FM. p. 104, pi. xiv. 

 Calcarina defrancii Millett, 1898, etc., FM. 1904, p. 598. 

 ,, Chapman, 1900, FLF, p. 197. 



