508 Proceedings of Royal Society of Edinburgh. [sess. 
Grunow considers that this may he an abnormal 1 form of C. radi- 
atus. To me it seems to be more allied to C. marginatus. 
Habitat. — Springfield deposit, Barbados, and Cambridge deposit, 
Barbados (Schmidt, Hardman!);* “Barbados deposit” (Rae ! 
Greville !). 
Yar. completa. — Diam. T125 to T4 mm. Central space small, 
angular, *0035 to '005 mm. broad ; the bounding areolae incon- 
spicuous. Markings polygonal and in contact to the central space, 
towards the centre 3|-, increasing outwards to 2J in ’01 mm. at 
about J of the radius, again decreasing to the border, punctate ; 
secondary oblique rows obvious. 
Habitat. — -Barbados deposit (Rae !). 
C. profundus. Ehrb., Mon. Ber. Ak ., 1854, p. 238. — Diam. h 
Central space and rosette absent. Markings somewhat larger at 
centre, about semiradius 6J to 7 in *01 mm., near border smaller 
and more crowded ; interspaces distinct, most evident opposite the 
shorter rows, at about -| of radius from centre. — Ehrb., Mikrog ., 
pi. xxxv. B.b. fig. 8 ; Ralfs in Pritch. Inf., p. 830. 
Ehrenberg’s figure shows the markings as subcircular and as 
decreasing gradually from the centre outwards, but more rapidly 
near the border. 
Habitat . — Atlantic Ocean, 2000 fms.; lat. 62° 6' N., long. 
32° 21' W., 1540 fms.; lat. 59° 12' K, long. 50° 38' W.; lat. 58° 
3' 1ST., long. 51° 50' W.;f northern and equatorial zone, 16 to over 
2000 fms. (Ehrenberg). J 
C. antarcticus. C. ( subglobosus , var.1) antardicus, Grun., Denk. 
Wien. Ak ., 1884, p. 84, [pi. iv. (D), fig. 23. — Diam. ’03 mm. 
Central space and rosette absent. Markings irregular, polygonal, 
increasing from the centre to about the semiradius, again diminish- 
ing towards the border ; at the centre 8, at the semiradius 4, towards 
the border 8 in ’01 mm.; rows indistinct; on outer half of valve 
inconspicuous, irregular, concentric bands ; apiculi numerous, in- 
serted close to the border, Border with inner edge indistinct ; 
striae irregular, 10 to 12 in ’01 mm. 
* In the collection of Dr Greville. 
t Mon. Ber. ATc., 1861, p. 280. 
t Abh. Ber Ak., 1872, p. 263. 
