DESCRIPTIVE CATALOGUE OF RECENT FORAMIN1FERA. 273 



cemented; aperture a single, simple, round opening. Length, 0.35 to 

 0.75 mm. (^ to - 8 -V inch). 



Localities. Cape Hatteras, in the Gulf of Mexico, and off New York 

 ^stations 2115, 2377, 2394, 2530, 2550, 2584), 400 to 1,000 fathoms. 



REOPHAX DIFFLUGIFORMIS Brady, variety TESTACEA, new. 

 (Plate 16, fig. 1.) 



Identical with the preceding, except that the test is much larger and 

 composed entirely of small empty shells of foraminifera. Section shows 

 the undivided chamber and the walls constructed of a single layer of 

 shells. 



Locality. Southward of Long Island (station 2234), 810 fathoms. 



REOPHAX SCORPIURUS Montfort. 

 (Plates 16, fig. 3; 17, fig. 1.) 



Consists of a series of segments, few in number, irregular in shape, 

 joined in a more or less curved or crooked line. The walls may be com- 

 posed entirely of sand or of the shells of foraminifera, or in part of each. 



Localities. Off Marthas Vineyard, and southeast of Georges Bank 

 (stations 2221, 2570), 1,525 and 1,813 fathoms. 



REOPHAX BILOCULARIS, new species. 

 (Plate 17, fig. 2.) 



Composed of two segments united end to end in a straight or curved 

 line; primary segment oval, ovate, or cylindrical, constricted at the junc- 

 tion with the final segment, which is ovate, inflated, and terminates in 

 a tubular neck with a round orifice; walls composed of a single layer 

 of shells of dead foraminifera, both small and large, mixed with fine 

 sand; surface often very irregular when large shells are built into the 

 walls. Length, about 1.5 mm. (-^ inch). 



This seems to be an intermediate form between R. difflugiformis and 

 R. scorpiurus. Goes l figures a similar specimen under the name 

 R. nodulosus pygmceus, but another specimen under the same name is 

 figured having five segments. No example having more than two seg- 

 ments has been found among the hundreds taken from material dredged 

 off Cape Fear (station 2679), 782 fathoms. 



REOPHAX PILULIFERA Brady. 



(Plate 18, fig. 1 ) 



Segments three to five, inflated, rapidly increasing in size from the 

 first, forming a conical curved test; walls composed of coarse sand, 

 rough ; color, brown ; aperture simple, terminal. Length, about 1.5 mm. 

 (A inch). 



Locality. Off Bahia, Brazil (station 2760), 1,019 fathoms. 



J Arct. and Scaiid. Foram, 

 NAT MUS 97 18 



