1888 — 89 .] Mr John Rattray on the Genus Coscinodiscus. 503 
(Weissflog !) ; Curtis Straits (Roberts !) ; Richmond (Cleve and 
Moller !) ; Successful Bay, Kerguelen (Cleve !) ; Virgin Islands 
(Cleve !). 
Var. singciporensis, nov. — Diam. *085 mm. Central rosette 
evident, large. Markings 4 in ’01 mm. Adjacent to the border 
a sharply defined broad band with smaller markings, 6 in *01 mm. 
Apiculi large, with a median constriction and rounded extremities, 
inserted at inner edge of the marginal band. Border narrow, striae 
6 in *01 mm. 
Habitat. — Singapore (Schmidt). 
Var. adinocycloides. C. actinocycloides, Pant., Fossil. Bacil. 
Ung., p. 71, pi. ix. fig, 72. — Diam. *075 to *1125 mm. Surface 
flat towards centre, slightly convex towards the border. Central 
space small, subcircular, punctate. Markings 6 towards the border, 
gradually diminishing to 8 in '01 mm.; rows parallel to that at 
centre of each fasciculus, secondary oblique decussating rows 
straight, the fasciculi separated by evident rows of small subulate 
hyaline interspaces ; apiculi distinct. 
Habitat — Kekko, Szakal, Felso-Esztergaly deposits (Pantocsek !) ; 
K6kko deposit (Grove !); Szent Peter deposit (Grove !). 
Var. grandiuscula , nov. Sp. n A Sch., Atl., pi. lvii. fig. 23. — 
Diam. -04 mm. Markings 6 in *01 mm. Apiculi prominent, placed 
at a considerable distance from the border. 
Habitat. — Rio de Janeiro (Schmidt). 
C. doljensis. Pant., Fossil. Bacil. Ung., p.72, pi. xii. p. 10 5. 
— Diam. - 036 to *1 mm. Surface slightly convex towards the 
border. Central space minute, indefinite, with minute isolated or 
subangular granules. Markings delicate, 12 to 15 in ’01 mm,, 
somewhat less crowded towards the centre, towards the border 
punctiform ; rows radial and subparallel, obscurely fasciculate ; 
minute subulate hyaline spaces opposite origin of the shorter rows, 
on a distinct band adjacent to the border, the oblique decussating 
rows more manifest. Apiculi prominent at internals of '006 to - 01 
mm. Border narrow, hyaline. 
Habitat. — Dolje Klebschiefer (Pantocsek !). 
