FORAMINIFERA OF THE ATLANTIC OCEAN. 63 



AMMOBACULITES CASSIS (Parker). 



Plato 12, fig. 5. 



Liluola cassis Parker, in Dawson, Canatl. Nat., vol. 5, 1870, pp. 177, 180, fig. 3. 

 Haplophragmium cassis H. B. Br.\i)Y, Rep. Voy. Challenger, Zoology, vol. 9, 



1884, p. 304, pi. 33, figs. 17-19.— Egger, Abh. Bay. Akad. Wiss. Miinrhen, 



vol. 18, 1893, p. 261, pi. 5, figs. 55, 56.— GoE.s, Kongl. Svcnsk. Vet. Akad. 



Handl., vol. 25, No. 9, 1894. p. 24, pi. 5, fig.s. 152-157.— Flint, Ann. Hep. 



U. S. Nat. Mus., 1897 (1899), p. 275, pi. 19, fig. 4.— Miixett, Journ. Roy. 



Micr, Soc, 1899, p. 359, pi. 5, figs. 4-6, 7?.— Chapman, Journ. Linn. 8oc., 



vol. 28, 1902, p. 408, pi. 36, fig. 8.— Awerinzew, Mem. Acad. Imp. Sci. 



St. Petersbourg, ser. 8, vol. 29, No. 3, 1911, p. 20. 

 Description. — Test ]:)lanospiral, com})rossecl, early ])ortioiis coiled, 

 later chambers uncoiled but obliquely })laced, periphery rouu(kHl, 

 chambers comparatively few, only four or hve in the uncoiled portion, 

 sutures disthict ]>ut slightly depressed; wall comj^^sed of coarse 

 sand grains but smoothly linished, with a yellowish brown cement; 

 aperture simple at the distal or peripheral end of the chamber in the 

 uncoiled portion; color 3^ellownsh brown. 

 Length, up to 1.5 mm. 



Distribution. — This is an Ai'ctic species of shallow water, originally 

 described from Gaspe Bay in the Gulf of St. Lawrence in 16 fathoms 

 (29 meters). Brady gives two other localities, Lievely Harbor, 

 Disco, Greenland, 5-20 fathoms (9--37 meters) and Deva Bay, Spit/,- 

 bergen, latitude 77° 30' N. in 7 fathoms (13 meters). Flint recor«ls 

 it from Portland, Maine, 4-5 fathoms (7-9 meters). Awerinzj^w 

 records it from the Siberian Arctic. It occurs in deep cold waters 

 elsewhere, however. Millett's material does not seem at all typical 

 and from the figures appears to be an enti rely different species. Eggef's 

 material from the coast of equatorial Africa does not belong to the 

 species as far as is shown by the figures. 



The species has not occurred in the Albatross material I have 

 examined but it is mostly in deeper water than the recorded stations 

 for this species. In ni}' own dredgings, however, I have found it from 

 10-18 fathoms (18-33 meters) in the outer part of ('asco Bay, Maine, 

 which is the same general area recorded by Flint as Portland, Maine. 

 It was not met with in any of the shallow water dretlgings in the 

 Woods Hole region, showing that it is probably not found south of 

 Gape Cod in shallow watei'. This lack of data in the Albatross mate- 

 rial seems to sho\\' that it is really an Arctic species coming southward 

 in very cold water along the western Atlantic coast in shallow water 

 and perhai)S clsewhorc. I liave had it also in the Arctic materinl of 

 the Candian Arctic Pl\'];e(Jition. 



All the material I have seen shows little variation in general 

 characters, the breadth of the test being the only character that 

 shows an appreciable variation. 



