96 Mr. W. D. Lang—Revision of the 
8. C. glandulosa, sp. n. 
Type-specimen, British Museum, D. 15009 ;. mucronatus- 
zone; Riigen. 
9. C. [Escharipora| guascoi (Ubaghs); 1865, Verh. nat. 
Verein. pruss. Rheinlande und Westphalens, vol. xxii. 
p- 51, pl. ii. fig. 3; Maastrichtian; Valkenburg, near 
Maastricht. 
IV. Rurniopora, gen. nov. 
Tabular Diagnoses of the Species. 
A. Avicularia numerous. 
L.. Coste more than, 50) weyers. sare, chan alee aetnie © 1. R. labiata. 
II. Costz generally less than 30 ...........4.. 2. RK. aviculosa. 
B. Avicularia rare or absent. 
I, Length about 1 mm.; coste about 16 to 20; 
5 or 6 lateral costal fusions. 
a. Incrusting. 
1. Coste tewer, 16-18; aperture sub-semi- 
CIrculata See sep eee ee eee ere 3. R. radiata. 
2, Costa more, 18-20; aperture supra-semi- 
GIPCUIAT 2 |. mays bois in orsign te etaseat ae 4, R. aspera. 
6; SHirect walla mit anv. cece se ete pie tiie 5. R. asperula. 
CHTreet WeyAtMaNIChl™ Aise phos aisle eines fee ails 6. R. hispida. 
Il. Length 1°5-1:7 mm. 
u. Coste 20-23; apertural spines 4 ; 6-7 lateral 
costal fusions; length 16 mm. Aperture 
semicircular or supra-semicircular. 
DP We rashiatae 8 Sacre ehevent ares ts ote rustone seabyere 7. Be. cacus, 
2 -Hrect, unilamingn 2). cies ests eee 8. R. horrida. 
b. Coste about 26 ; apertural spines 6-7 ; about 
7 lateral costal fusions; length 1-6-1°7 mm.; 
aperture slightly cribriline ............ 9. &, seabra. 
c. Coste about 28-30; apertural spines 6-7 ; 
about 7 lateral costal fusions; length 15- 
17 mm. ; aperture markedly cribriline .. 10. ‘R. jurassica. 
It is probable that Cellepora perforata, Quenstedt, 1879, 
Pet. Deutsch. Abt. i. Band. vi. Heft 2, p. 312, pl. cliv. fig. 37, 
Maastricht, is a Rdiniopora, but the characters cannot be 
determined in sufficient detail to place it. 
1. R. [ Cribrilina] labiata (Levinsen), 1907, Over. ov. d. Kgl. 
Dankse Vidensk. Selsk. Forhand. for 1907, No. 4, 
pp. 155-6, 158, Plate opposite p. 160, fig. 1; 
[ Cretaceous ]. 
2. R. aviculosa, sp. n. 
Type-specimen. In collection of M. Cauu (photograph 
