78 BULLETIN 71, UNITED STATES NATIONAL MUSEUM. 



CRISTELLARIA LATIFRONS H. B. Brady. 



Plate 38, fig. 2. 



Cristellaria latifrons H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, 

 p. 544, pi. 68, fig. 19; pi. 113, fig. 11a, 6.— Flint, Rep. U. S. Nat. Mus., 

 1897 (1899), p. 316, pi. 63, fig. 3. 



Description. — Test elongate, tapering toward either end, triangular 

 in transverse section; early chambers close coiled, later ones uncoiling 

 elongate, very broad on the inner face, each chamber extending well 

 back toward the preceding coil, its marginal angles acute or obtusely 

 rounded, peripheral margin of the test angular. 



Length 0.6 to 1.5 mm. 



Distribution. — This species has not previously been recorded from 

 the North Pacific. The only station from which I have had material 

 is Albatross D4966 in 290 fathoms, bottom temperature 44.1° F., 

 off Japan. The material was very typical. 



In the form of the chambers this is very different from C. italica, in 

 which the chambers are shorter and do not extend back to the 

 initial whorl. 



CRISTELLARIA ITALICA (De France). 

 Plate 33, fig. 3. 



Saracenaria italica De France, Diet. Sci. Nat., vol. 32, 1824, p. 177; vol. 47, 

 1827, p. 344; Atlas Conch., pi. 13, fig. 6.— Blainville, Man. de Mai., 1825, 

 p. 370, pi. 5, fig. 6. 



Cristellaria (Saracenaria) italica d'Orbigny, Ann. Sci. Nat., vol. 7, 1826, p. 293, 

 No. 26; Modeles, Nos. 19 and 85. 



Cristellaria italica Parker, Jones, and H. B. Brady, Ann. Mag. Nat. Hist., ser. 3, 

 vol. 16, 1865, pp. 21, 32, pi. 1, figs. 41, 42— H. B. Brady, Rep. Voy. 

 Challenger, Zoology, vol. 9, 1884, p. 544, pi. 68, figs. 17, 18, 20-23.— Egger, 

 Abh. kon. bay. Akad. Wiss. Munchen, CI. n, vol. 18, 1893, p. 350, pi. 12, 

 figs. 22, 23, 26, 40-42. — Fornasini, Mem. Accad. Sci. 1st. Bologna, ser. 5, 

 vol. 4, 1894, p. 219, pi. 3, fig. 8; vol. 5, 1895, p. 12, pi. 4, fig. 28— Flint, Rep. 

 U. S. Nat. Mus., 1897 (1899), p. 316, pi. 63, fig. 6. 



Description. — Test stout, trihedral, triangular in cross section, 

 early chambers close coiled, later ones uncoiling but short, not extend- 

 ing back to the earlier volutions; sutures somewhat depressed; wall 

 smooth; face of the last formed chamber nearly triangular. 



Length of North Pacific specimens usually less than 2 mm. 



Distribution. — Apparently this species has not been recorded from 

 the North Pacific. I have had specimens from but two Albatross 

 stations, D4874 in 66 fathoms and D4972 in 440 fathoms, bottom 

 temperature 39.8° F., both off Japan. At both these stations the 

 specimens were small. 



