100 Mr. W. D. Lang—Revision of the 
3. U. [Steginopora] demorgani (Jullien), 1886, Bull. Soe. 
Zool. France, vol. xi. p. 615, pl. xix. figs. 4-5, pl. xx. 
fig. 1 ; Senonian [Campanian]; near Meudon, France. 
4, U. [Steginopora] meudonensis (Jullien), 1886, op. cit. 
p. 614, pl. xvii. & pl. xviii. figs. 1-3; Senonian [Cam- 
panian |; near Meudon, France. 
IX. Srectnoprora, d’Orbigny. 
Genolectotype. S. ornata. 
Tabular Diagnoses of the Species. 
A. Larger; paired avicularia do not project 
above secondary front wall .............. 1. S. ornata. 
B. Smaller; paired avicularia project above 
secondary front wall .......eeeseeeeeree 2. S. aculeata. 
1. S. ornata, d’Orbigny, Pal. France. 1852, pl. 721. figs. 1-4, 
18538, p. 501; Senonian ; Sainte-Colombe, France. 
2. S. aculeata, VOrbigny, Pal. Franc. 1852, pl. 721. figs. 5-8, 
18538, p. 502 ; Senonian ; Sainte-Colombe, France. 
X. Distecinopors, d’Orbigny, 1852, Pal. France. p. 235 
(=Thoracophora, J. Jullien, 1886, Bull. Soc. Zool. 
France, vol. xi. p. 610). 
Genotype and only species here included. D. { Eschara| 
horrida (WOrbigny), 1850, Prod. Pal. vol. ii. p. 264; 
Senonian [Campanian] ; Meudon, France. 
» 
g. DracanrHororrn#, subfam. nov. 
DIACANTHOPORA, gen. Nov. 
Genotype. D. bispinosa. 
Tabular Diagnoses of the Species. 
A. Avicularia consisting of a pair distally placed 
with regard to each aperture and directed 
GUGWAFUS 5.5. oa cutle ele Biro etee nha eee 1. D. bispinosa. 
B. Avicularia consisting of a pair proximally 
placed with regard to each aperture and 
directed inwards. 
T, (Kia fairly close together ......2.-..5.. 2. D. abbottit. 
II, (Heia widely spaced. ....°..°. “0 eee eee 3. D, distans. 
