56 



BULLETIN 71, UNITED STATES NATIONAL MUSEUM. 



and sponge spicules, interior chamber single, undivided, apertures 

 interstitial ; color grayish white. 



Diameter 1-3 mm. 



The typical form of this species has not been recorded from the 

 North Pacific, but it is represented by the following variety: 



CRITHIONINA PISUM Goes, var. HISPIDA Flint. 



Crithionina pisum Goes, var. hispida Flint, Rep. U. S. Nat. Mus., 1897 (1899), 

 p. 267, pi. 0, fig. 2.— Rhumbler, Arch. Protistk., vol. 3, 1903, p. 230, fig. 61 

 (in text).— [?] Bago, Proc. U. S. Nat. Mus., vol. 34, 1908, p. 127. 



Crithionina abyssorum (part) Kijer, Norske Nordhavs-Exp., no. 25, 1899, p. 7, 

 pi. 1, figs. 1, 3 (not 2, 4). 



Description. — Variety differing from the typical in its smaller size 



and the hispid surface made up of a great number of sponge spicules 



arranged nearly perpen- 

 dicular to the outer wall; 

 walls somewhat thinner 

 than in the typical. 



About one-half the size 

 of the typical form. 



Distribution. — One of 

 the original stations for 

 Flint's material was in 

 the North Pacific, Alba- 

 tross station D.30S0, in 

 93 fathoms, green mud, 

 off HecataBank, Oregon. 

 Bagg records the variety 

 from two Albatross sta- 

 tions, H4440, in 1,259 

 fathoms, and H4502, in 



1,342 fathoms, both stations in the vicinity of the Hawaiian Islands. 



I have failed to find this variety in any of the western Pacific material 



that I have examined. 



The specimens from Albatross station H4502 in the National 



Museum labeled as this variety by Doctor Bagg seem to me to be 



very small spinose Radiolaria and not Foraminifera. The largest 



one measures but 0.05 mm. without the spines. 



The figure given here is from the original of Doctor Flint. 



CRITHIONINA ROTUNDATA, new species. 



Description. — Test free, subspherical, composed of loosely aggluti- 

 nated sand grains; surface with many pores leading by canals through 

 the thick walls to the single central chamber, which is simple, nearly 

 spherical, and small compared to the size of the test ; wall of the cham- 



Fig. 63.— Crithionina pisum, var. hispida. x 15 (after 

 Flint), a, 6, sections. 



