180 BRITISH PALAOZOIC SPONGES. 
61. Panmacis cunzata, Meek and Worthen sp. 
1860. Proc. Acad. Nat. Sciences Philadelphia, p. 448. 
Examples of this species have been discovered in the Carboniferous Limestone 
near Henbury, Bristol (‘Geol. Mag.,’ 1876, dec. ii, vol. ii, p. 267). The 
original form was referred to the Petrospongie ; in Bigsby’s ‘ Thesaurus Devonico- 
Carboniferus,’ p. 201, it is placed with the Amorphozoa under the name of Spheno- 
poterium cuneatum. The nature of the fossil is doubtful; it appears to me to be 
rather related to corals than to Sponges. 
62. Prorosponera Dirrusa, Salter. 
1873. Cat. Cambrian and Silur. Foss. Cambridge, p. 3. 
This species is based on a few scattered, rod-like, rusty markings on the surface 
of a fragment of black shale of Menevian age from St. David’s, South Wales. It 
is doubtful whether the markings represent Sponge-spicules. The original speci- 
men is in the Woodwardian Museum at Cambridge. 
63. PROTOSPONGIA ? FLABELLA, Hicks. 
64. — ? MAJoR, Hicks. 
1871. Quart. Journ. Geol. Soc., vol. xxvii, p. 401, pl. xvi, figs. 14—19. 
The typical examples of these species, now in the Woodwardian Museum at 
Cambridge, consist of slightly raised, sub-parallel, straight or curved lines, which 
are sometimes crossed by other lines at varying angles. No structure whatever is 
preserved. The character of these markings is doubtful, and they are too indefi- 
nite to be regarded as portions of Sponge-structure. They occur in the Harlech 
Grits, near St. David’s, South Wales. 
65. Protosponera Luprnsp[ts], Holl. 
66. — MACULM@FoRMIS, Holl. 
1872. Geological Magazine, vol. ix, p. 850. 
These two species were described by the late Dr. Holl in a foot-note to his 
paper on “ Fossil Sponges,” but the specimens were not figured. They were from 
