On a New Genus of Foraminifera, etc. Bi/ H. J. Carter. 501 



minute tesselation of polygonal areae in the centre of each of which 

 is a punctiiui or pore, and irregularly scattered over this again, a 

 great number of hemispherical tubercles (Fig. 9, a, h) ; polygonal 

 areae about ttjVo i^ich in diameter ; pore about -^^^^^ inch ; hemi- 

 spherical tubercle, which is hollow, from rjl^ inch to ^l^ inch in 

 diameter, and from y Jo itich to yiu inch apart (Figs. 9 and 10, a, h). 

 Infernal structure : largest chamber about ^V inch in horizontal 

 diameter and -fV inch high (inside measurement) ; more or less 

 filled, with (now) dry apparently homogeneous sarcode, that is, 

 without fragments of sponge-spicules or any other foreign material ; 

 arched over superiorly and more or less straight inferiorly, that is, 

 following the surface of the object on which it may be growing 

 (Fig. 7, a) ; upper wall about 7, ^jtr inch thick, constructed of vertical 

 prismatic pillars in juxtaposition traversed by a central tube 

 whose external end, together with that of the prismatic pillar, forms 

 the minute tesselated surface above mentioned, and its inner end 

 that of the roof of the chamber, through which, communication 

 between the external and internal parts of the test is effected ; 

 pillars arranged perpendicularly to the curve of the wall and 

 together with their tubes of the same diameters as the polygonal 

 areaj and pores of the surface respectively (Figs. 7, a, and 10, a). 

 Chambers communicating with each other by means of one or 

 more apertures (Fig. 7, h). Lower wall or floor (Fig. 7, d) less thick 

 than the roof, but still traversed more or less by the vertical 

 tubulation, and presenting a larger hole here and there which 

 must have allowed the sarcode of the chamber to come into direct 

 contact with the coral. Aperture in plurality on the margin 

 opposite the chambers respectively supported on a papillary pro- 

 jection about ^^0 inch in diameter ; the hole itself about ^^0 inch 

 (Figs. 8 and 11). Size of specimen about one inch in diameter, 

 that is, three times that of the circular space in the coral which 

 it surrounds ; maximum thickness about ^V inch. 



Eab. Marine, on the coral of Amfhilielia oculata. 



Log. North Atlantic Ocean, between N. of Scotland and Faroe 

 Islands (' Porcupine,' 18C9, Sta. 54) ; lat. N. 59^ 56'; long. W. 

 6° 27'; depth, 3t)3 fathoms; bottom temp. 31° 4'. 



Ohs. Of this species I have already stated that it appears to be 

 new, and although it is to a certain extent like Carpenteria, it 

 nevertheless differs in the flat, vesicular character of its chambers 

 extended more or less horizontally over the same plane ; in the 

 absence of elongated branched apertures; and that of foreign 

 material (fragments of sponge-spicules, &c.) in its sarcode, with 

 which the chambers of Carpenteria are invariably filled. The 

 presence of hemispherical tubercles scattered over the poriferous 

 surface is a common occurrence or feature on the tests of many 

 Foraminifera ; while the prismatic structure of the wall in which 



