1888-89.] Mr John Rattray on the Genus Coscinodiscus. 591 
hyaline spaces at subregular wide intervals. Border narrow ; striae 
obscure, 12 to 14 in *01 mm. 
Pantocsek includes this species in his section Cestodisci. The ab- 
sence of distinct apiculi and the more lax arrangement of the markings 
towards the border appear to me to bring it closer to the Radiati. 
Habitat — Bajtha, Also-, Felso-, Esztergaly, Kekko, Mogyorod, 
Szakal and Szent Peter deposits (Pantocsek !). 
C. liungaricus. Pant., Fossil. Bacil. Ung., p. 73, pi. ix. fig. 73. 
— Diam. *072 to *0825 mm. Surface slightly convex, depressed 
at the centre; colour brown, light blue and grey in concentric 
zones. Central space small, hut distinct, rounded. Markings 
round or obtusely angular, closely disposed 6, towards the border more 
crowded, punctiform, 8 to 9 in -01 mm.; rows straight; secondary 
oblique decussating rows most evident near the border; apiculi 
distinct, 10 to 15, at subequal intervals. Border sharply defined, 
about i to i of radius broad ; striae delicate, 14 to 1 6 in *01 mm. 
Habitat — Kekko, Szakal, Szent Peter and Felso-Esztergaly 
deposits (Pantocsek !). 
Yar. Szaboi , Rattray. C. Szaboi , Pant., Fossil. Bacil. Ung., p. 74, 
pi. xviii. fig. 167. — Diam. "064 mm. Central space small, smooth. 
Markings punctiform, 10 in *01 mm.; near the border a circlet of 
minute, rounded, distant, smooth spaces. 
Habitat. — Szent Peter deposit (Pantocsek !). 
C. ajpiculiferus * Rattray. C. armatus, Pant., Fossil. Bacil. 
Ung., p. 74, pi. x. fig. 90. — Diam. -034 to *049 mm. Surface 
almost flat or slightly convex, somewhat depressed at the centre. 
Central space and rosette absent. Markings obtusely angular; at the 
centre 8, soon increasing to 6 in *01 mm., and thence subequal to 
the border ; minute, subulate, hyaline spaces opposite the origin of 
the shorter rows ; rows straight ; apiculi 7 to 14, prominent, inserted 
close to the border. Border narrow, hyaline. 
Habitat. — Also-, Felso-, Esztergaly deposits (Pantocsek !). 
C. Martonfii .+ Pant., Fossil. Bacil. Ung., p. 72, pi. xv. fig. 132. 
* The name C. armatus has been preoccupied by Greville (Trans. Micr. Soc. 
Loud., 1861, p. 42, pi. iv. fig. 5) for a distinct form, and must be abandoned. 
t Dedicated to Prof. L. Martonfi of Szamos- Ujvar. 
