8 BULLETIN 71, UNITED STATES NATIONAL MUSEUM. 



Distribution. — Type-specimen from Nero station 2038 in 34 

 fathoms, near the Hawaiian Islands (Cat. No. 9024, U.S.N .M.). 



This species in its general form is somewhat similar to S. ooconica 

 H. B. Brady, but is much less excavated below, its surface ornamenta- 

 tion at once distinguishing it from that species. 



SPIRILLINA GUTTATA, new species. 



Plate 4, fig. 1. 



Description. — Test spiral, circular in dorsal view, flattened above, 

 very slightly concave below; wall smooth except for the suture and 

 the slight ornamentation consisting of a single row of slight depres- 

 sions near the inner border of the chamber; suture decidedly de- 

 pressed, on the under side the central portion filled with a mass of 

 irregular shell material showing the coils indistinctly and having a 

 somewhat radiating appearance. 



Diameter about 1 mm. 



Distribution. — Type-specimen (Cat. No. 9025, U.S.N.M.) from Alba- 

 tross station H4881, off Japan in 316 fathoms. 



In much tropical material there are found specimens which seem 

 referable to this genus. Especially when the growing edge is broken 

 and appears as a well defined opening the specimens seem at first 

 sight to belong to SpiriUina. One such specimen is here figured, 

 plate 4, figure 3. After the specimen was figured others came to 

 hand which were more nearly perfect and which seemed to show 

 convincingly that it was a Gastropod operculum of some sort instead 

 of a SpiriUina. 



Subfamily 3. EOTALIN^]. 



Test spiral, rotaliform, rarely evolute, very rarely irregular or 

 acervuline; chambers numerous, distinct or in some few species 

 largely obscured by shell growth, early chambers in all distinctly 

 rotaliform. 



This subfamily shows a very great range of characters, such genera 

 as Discorbis and Polytrema, for example, seeming entirely unrelated 

 until the early chambers of each are compared. 



Genus PATELLINA Williamson, 1858. 



Patellina Williamson (type, P. corrugata Williamson) Recent British Forami- 

 nifera, 1858, p. 46. — H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 

 1884, p. 633. 



Description. — Test conical in form or plano-convex; the early 

 chambers spirally arranged, later ones long and becoming annular 

 or nearly so about the periphery; chambers of living forms usually 

 simple but often partially divided by internal septas, visible from the 

 exterior; aperture elongate, at the inner border of the chamber. 



