122 
EEPTOilULTISP A ESA . 
the two species are, moreover, very different, for R. rowei consists 
of flat superimposed Berenicoid discs, whereas R. congesta is 
formed of a series of conical masses. 
The zooecial characters and the peripheral zone of crowded 
zooecia resemble those of B. conjluens (Reuss), hut the apertures 
are less crowded. In this latter respect the ‘ species ’ resembles 
B. papillosa (Ess.), var. oceanica (Orb.) ; hut it differs from that 
form by the presence of the peripheral zone of apertures, and the 
rarity or possibly complete absence of gonocysts. 
The Berenicea conjiuens (Rom.) of Xovak ^ may be a closely allied 
species of Reptomultisparsa, but if so, it may be easily distinguished 
from R. rowei by the gi’eater irregularity in distribution of the 
peristomes. I^ovak clearly recognized that the R. congesta of 
d’Orbigny is nearer to the Biastopora confluens of von Reuss than 
it is to that author’s B. congesta. 
The Jurassic representative of this species is R. undid at a 
(Mich.),^ which has a more massive zoarium, longer zooecia, and 
a more wrinkled suilace. 
LIST OF SPECIMEXS. 
D. 3944. A zoarium formed of four zooecial groups, encrusting a fragment of 
Echmocortjs, sp. Middle Chalk. Chatham. Gamble Coll. Figd. 
PI. VII. Fig. 1. 
D. 3879. An irregular worn zoarium, encrusting a fragment of Echinocorys, sp. 
Middle Chalk. Chatham. Gamble Coll. 
D. 3938. A zoarium 2 mm. thick and 6 mm. in diameter, encrusting a fragment 
of Echinocorys, sp. (on slide). Middle Chalk. Chatham. Gamble 
Coll. 
D. 3940. A zoarium 1*5 mm. thick and 12 mm. in diameter, encrusting 
a fragment of Echinocorys, sp. (on sHde). Middle Chalk. 
Chatham. Gamble Coll. 
D. 3939. An irregular zoarium encrusting a fragment of Echinocorys, sp. (on 
slide). Middle Chalk. Chatham. Gamble Coll. 
D. 3941. A large irregular zoarium encrusting a fragment of Micraster, sp. 
(on slide). Middle Chalk. Chatham. Gamble Coll. 
D. 3942. An irregularly heaped zoarium encrusting a fragment of Echinocorys, 
sp. (onshde). Middle Chalk. Chatham. Gamble Coll. 
1 Novak. Bry. bohm. Kr. : Denk. Ak. Wiss. Wien. vol. xixvii. pt. 2, 
p. 98, pi. iv. figs. 19-22. 
2 Michelin: Icon. Zooph. p. 242, pi. ivi. fig. 15. Cat. Jur. Bry. p. 115, 
pi. vi. figs. 2, 3. 
