48 



BULLETIN 71, UNITED STATES NATIONAL MUSEUM. 



Description. — Test nautiloid, nearly equally biconvex, the dorsal 

 side more convex than the ventral; the umbilical region concave on 

 both sides, broad, in face view nearly as broad as the diameter; 

 peripheral border nearly flattened in the later chambers which 

 increase rapidly in width, about eight chambers in the finol coil; 

 wall coarsely perforate. The inner border of the chambers often of 

 clear shell material; aperture a narrow curved slit at the ventral side 

 of the chamber, oblique. 



Diameter up to 1.5 mm. 



Distribution. — The only North Pacific records for this species seem 

 to be those given by Bagg from four Albatross stations off the 



Fig. 53.— Anomalina coronata Parker and Jones, x 40. a, dorsal view; b, apertural view; 



C, VENTRAL VIEW. (ADAPTED FROM BRADY.) 



Hawaiian Islands, D4000, H4566, H4571, H4596, depths ranging 



from 104 to 572 fathoms. I have failed to find typical specimens of 



this species. 



Genus CARPENTERIA Gray, 18S8. 



Carpentaria Gray (type, C. balaniformis Gray), Proc. Zool. Soc, London, vol. 26, 



1858, p. 269.— H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, 



p. 676. 



Description. — Test attached, early chambers rotaliform, later ones 



becoming irregular and inflated, extending upward in an irregular 



column; chambers few; wall coarsely perforate; aperture in adult 



specimens usually with a tubular neck. 



The species of this genus are apparently most common in the shal- 

 low waters of tropical seas. The genus was noted but twice in the 

 North Pacific material examined. 



CARPENTERIA MONTICULARIS Carter. 

 Plate 20, fig. 3. 



Carpenteria montwularis Carter, Ann. Mag. Nat. Hist., ser. 4, vol. 19, 1877, p. 211, 

 pi. 13, figs. 9-12.— H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, 

 p. 677, pi. 99, figs. 1-5. — Egger, Abh. kon. bay. Akad. Wiss. Miinchen, 

 CI. H, vol. 18, 1893, p.- 439, pi. 21, fig. 12.— Chapman, Journ. Linn. Soc, 

 Zoology, 1900, p. 14, pi. 2, fig. 5; pi. 4, figs. 5, 6. — Millet, Journ. Roy. Micr. 

 Soc, 1904, p. 496. 



Description. — Test attached; early chambers coiled, aperture an 

 elongate slit at the inner margin of the chamber, later chambers 



