72 BULLETIN 71, UNITED STATES NATIONAL MUSEUM. 



This genus is represented by several recent species, all of which are 

 characteristic of shallow water of the Tropics, although found as far 

 north as the Mediterranean. 



CALCARINA SPENGLERI (Linnaeus). 

 Plate 31, fig. 2. 



"Ammonshorn" Spengler, Danske Skriften, vol. 1, 1781, p. 379, pi. 2, figs. 9a-c. 



Nautilus spengleri Linnaeus, Syst. Nat., ed. 13 (Gmelin's), 1788, p. 3371, No. 10. 



Calcarina spengleri d'Orbigny, Ann. Sci. Nat., vol. 7, 1826, p. 276, No. 4.— 

 Carpenter, Philos. Trans., vol. 150, 1860, p. 548, pis. 19, 20, woodcuts.— 

 Carpenter, Parker, and Jones, Introd. Foram., 1862, p. 216, pi. 13, fig. 21, 

 pi. 14, figs. 1-10, figs. 33-36 in text. — Parker, Jones, and H. B. Brady, 

 Ann. Mag. Nat. Hist., ser. 3, vol. 16, 1865, p. 24, pi. 3, fig. 87.— Schwager, 

 Boll. Com. Geol. Ital., vol. 8, 1877, p. 26, pi., fig. 74— Butschli, in Bronn, 

 Klassen und Ordnungen Thier-Reichs, 1880, p. 207, pi. 9, fig. 7.— H. B. 

 Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 712, pi. 108, figs. 

 5, 7. — Egger, Abh. kon. bay. Akad. Wiss. Munchen, CI. n, vol. 18, 1893, 

 p. 423, pi. 19, figs. 4-6.— Millett, Journ. Roy. Micr. Soc, 1904, p. 597. 



Description. — Test lenticular, biconvex; chambers arranged in 

 three or four volutions, each with several chambers, but not dis- 

 tinguishable from the surface except the latter part of the final 

 whorl; wall covered with a thick deposit of calcareous material, the 

 surface with raised tubercles of solid, translucent material; periph- 

 eral border typically with large spines, usually simple, subcylin- 

 drical; aperture a row of rounded pores along the inner margin of the 

 chamber. 



Diameter up to 3 mm. or more. 



Distribution. — Apparently this species has not previously been 

 recorded from the North Pacific. A few specimens were obtained 

 from material collected by Capt. John Kodgers of the U. S. Exploring 

 Expedition in Gaspar Straits and a few from material collected by 

 Doctor Mearns at Cagayan, Sulu Islands, and Cebu, Philippines. 



In some parts of the Tropics this species is very abundant in shore 

 sands. It is an interesting species with its high development of sup- 

 plemental skeleton and complex canal system. 



CALCARINA HISPIDA H. B. Brady. 

 Plate 29, figs. 4, 5; plate 31, fig. 3. 



Calcarina spengleri, bispid variety Carpenter, Philos. Trans., vol. 150, 1860, 



p. 551, pi. 19, figs. 8-11; pi. 20, figs. 6, 8. 

 Calcarina hispida H. B. Brady, Proc. Roy. Irish Acad., ser. 2, vol. 2, 1876, p. 590; 

 Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 713, pi. 108, figs. 8, 9.— 

 Lister, Philos. Trans., vol. 186, 1895, p. 437, pi. 8, figs. 34-37.— Millett, 

 Journ. Roy. Micr. Soc, 1904, p. 597. 

 Calcarina calcar, var. hispida Carter, Ann. Mag. Nat. Hist., ser. 5, vol. 5, 1880, 

 p. 453. 

 Description. — Test rotaliform, composed of several coils, each of 

 several chambers, little if at all embracing, not visible from the 

 exterior except the few chambers last formed; peripheral margin 



