158 
PHALAXGELLA. 
recommended by its gi’eat practical convenience. Eecopmizing the 
nnsuitability of Tuhidipora for adnate foiTQs with the apeitures in 
divergent series, he founded the genus Phalangella. The members 
of this genus differ from Idmonea, Crisina, etc., in that the rows 
of peristomes are less regular, and are divergent instead of being 
alternate and transverse. 
The name Tuhidipora is therefore abandoned, as it has been 
used in such veiy diverse senses, and was very imperfectlv 
diagnosed both by Lamarck and Lamouroux. The genus has 
been accepted bj’ many palaeontologists for Eerenicoid species with 
high peristomes, such as Kdmer’s Tuhidipora parca, von Hagenow’s 
Tuhidipora paradtica, and d’Orbigny’s Tuhidipora fascicidaris. 
These Biyozoa might be regarded as primitive foinis of Thalaugella 
if the recent species have been developed from Berenicea bv — 
1st, the increase in height of the peristomial portions of tlie zoa'cia, 
and 2nd, the subsecpient arrangement of such highly raised 
peristomes into regular radiating series. Such an assumption seems 
doubtful. The Eryozoan wliich seems the most probable ancestor 
of Phalangella is the Berenicea radians of Xovak ; in tliat ‘ species ’ 
the peristomes are high, and tlie radial, linear arrangement is 
indicated. It seems better, therefore, to restrict Phalangella to 
those ‘ species ’ in which the peristomes occur in somewhat 
irregular, divergent rows. The genus may thus be regarded as 
the Eerenicoid representative of the Idmoniidie. 
Phalangella radians (Xovak), 1877. 
Syn. Berenicea radians, Xovak. 1877. Bry. bohm. Kr. : Denk. Akad. AViss. 
Wien. vol. xxxvii. pt. 2, p. 98, pi. iv. figs. 1.7-18. 
non Biastopora ,, Pergens & Meimier, 1887. Bry. gar. Faxe : Ann. Soc. 
nialac. Beige, vol. xxi., j\Ieni. p. 200. 
,, ,, Pocta, 1892. Mech. Koryc. Hory: Ceska Akad. Fr. 
.Jos. Praze. sect ii. p. 33. 
non ,, ,, Tine, 1889. Polyz. Greeusd. : Proc. Yorks. Geol. Soc. 
vol. xi. p. 266, pi. xii. tig. 9. 
Char. — Zoariura discoid, elliptical, or reniform. Zooecia tapering towards the 
distal end. Peristomes in fairly regular radial lines. Surface of zoarinm 
punctate. 
Distkib. — Cenomanian : Kamajk, Zbislaw, and line, Bohemia, in Korycaner 
Scbichten. 
