198 BRITISH JURASSIC SPONGES. 
Genus.—CRATICULARIA, Zittel. 
1877. Studien iiber fossile Spongien, I. Abhandlung der k. bayer. Akademie der 
Wiss., Cl. ii, Bd. xiii, Abth.i, p. 46. 
Syn.—Scyphia, Auct. (in part); Cribrospongia, d’Orbigny, F. A. Roemer (in 
part) ; Goniospongia, d’ Orbigny (in part) ; Dictyonoccelia, Cribroccelia, Gonioccelia, 
Ktallon (in part); Diplostoma, Dendrospongia, Ff’. A. Roemer (in part); Euco- 
scina, Desmoscinia, Phragmoscinion, Rhabdocnemis, Laoccetis, Hemiccetis, 
Brachiolites, Pomel (in part) ; Textispongia, Clathrispongia, Quenstedt (in part). 
Sponges cup- or vase-shaped, cylindrical, tubular, simple, or branching. Both 
the outer and inner surface of the sponge-wall with numerous round or oval ostia 
disposed in regular vertical and transverse rows crossing each other at right 
angles ; occasionally the ostia of one surface are disposed in longitudinal furrows. 
The radial canals are straight and terminate blindly, those from opposite surfaces 
alternating with each other. Skeleton very regular, forming equal meshes, with 
compact nodes. Occasionally there is a delicate dermal layer similar to that in 
Tremadictyon. The type species is Craticularia (Scyphia) parallela, Goldfuss, sp. 
(‘ Petref. Germ,’ vol. i, p. 8, pl. i, fig. 3). This genus is fairly common in the 
Jurassic strata of Germany and in the Cretaceous of this country. 
4. CRATICULARIA CLATHRATA, Goldfuss, sp. Plate XI, fig. 5. 
1826-33. ScypHia cLarHRava, Goldfuss. Petref. Germ., p. 8, pl. iii, figs. La, b. 
1877. OravricuLarta chatHrata, Zittel. Studien, i, p.46; Neues Jahrbuch, 
p. 355. 
1878. Scyputa — Quenstedt. Petref. Deutschl., vol. v, p. 72, 
pl. exvil, figs. 22—24. 
1883. CRATICULARIA — Hinde. Cat. Foss. Sponges, p. 94. 
The only example of this species from British rocks, so far as yet known, is 
the lower portion of a vasiform specimen, 73 mm. in height by 49 mm. in width. 
The wall at the upper margin is 13 mm. in thickness. The roughened outer 
surface shows regularly-disposed oval ostia from 2 mm. to 3 mm. in width; the 
vertical rows are separated by nodose ridges, about 3 mm. in width. The ostia 
of the inner surface of the wall are situated in longitudinal furrows. The skeletal 
meshwork, as shown on a polished surface, is extremely regular, the sides of the 
