70 
OSCULIPORIDJE. 
? Tnmcatula pinnata^Xme, 1891. Eep. Cret. Polyz. : Rep. Brit. Assoc. 1890, 
p. 393. 
? ,, ,, Vine, 1893. Compl. Rep. : Rep. Brit. Assoc. 1892, p. 334. 
Idmonea aculeata, Michelin, 1846. Icon. Zooph. p. 203, pi. Hi. tig. 10. 
Otculipora ,, pars, d’Orbigny, 18o0. Prod. Pal. vol. ii. p. 177. 
,, ,, d’Orbigny, 1850. Rev. Mag. Zool. i. p. 110. 
Tfumatula ,, d’Orbigny, 1854. Bry. Cret. p. 1054, pi. 796, figs. 1-5. 
,, ,, von Reuss,^ 1872-3. Bry. unt. Quad. : Palaont. vol. xx. 
pfc. i. pp. 98, 122, pi. XXX. fig. 4. 
,, ,, Pergens, 1890. Rev. p. 385. 
? ,, ,, Bucaille, 1890. Bn,'. Cret. Seine-Inf. : Bull. Soc. Sci. nat. 
Rouen, vol. xxv. p. 507. 
,, ,, Canu, 1897. Bry. St. Cal. : Bull. Soc.geol. France, ser. 3, 
vol. xxv. p. 748. 
? ,, ,, Canu, 1900. Geol. Romorantin : vol. xxviii. p. 103. 
non Homceosolen acideatus, Vine, 1893. Compl. Rep.: Rep. Brit. Assoc. 1892, 
p. 334. 
Diagnosis. 
Zoarium large, irregular ; arising from a broad base ; usually three 
main branches, each of xvliich may subdivide. The branches 
are wide and flat, giving off numerous long, wide sub-branches, 
which may be well reflexed or remain almost in the same 
plane as the axis of the branch. 
Eeverse surface smooth or transversely wrinkled. 
Gonoecia are ovoid bodies on the reverse face. 
Dimensions. 
Rbmer’s 
type. 
Michelin. 
D’Orbigny, 
pi. 796, 
figs. 1-5. 
Simono- 
witsch. 
mm. 
mm. 
mm. 
mm. 
Zoarium: height 
12 
11 
- 10 - 
18 
,, width 
— 
13 
25 
— 
Branches : width of axis 
1*5 
1-6 
4-5 
2 
,, width from tip to tip of 
lateral processes 
3 

12 
6 
Lateral processes : diameter 
•4 
-5 
1 
-8? 
,, ,, distance ... 
1-1-5 
1-8 
X 2 
1-5? 
,, ,, length 
1-1-8 
-1 
5 ' 
3 ? 
Zooecia : diameter of apertures 
— 
1 
-2? 
1 
— 
^ The specimen figured by von Reuss in the same work (pi. xxx. figs. 8a, h) as 
Desmepora semicylindrica appears to be probably a worn specimen of this species, 
but without knowledge of the obverse surface no satisfactory decision is possible. 
The zoarium has strikingly the aspect of an Homoeosolen pinnatus. 
