WITH LIST OF SPECIMENS. 
7 
[E. 8021.] Theca with hydrospires in posterior interradius. 
[E. 8022.] Section across ambulacrum, right posterior and right 
anterior radii. 
[E. 8024.] Presented by J. Bofe. Eive ground and polished 
specimens. 
-. Lower Carboniferous, Carboniferous Limestone : England. 
[E. 80.] Eive thecas. 
[E. 7991.] Harford Coll. Two thecas. 
•-. Lower Carboniferous, Carboniferous Limestone: Bolland(?), 
Lancashire, England. 
[E. 8029.] Gilbertson Coll. Theca with hydrospires in posterior 
interradius. 
[E. 8186.] Gilbertson Coll., Ho. 81 cZ: “new genus; with only 
four divisions or rays,” Gilbertson MS. Cat. Theca imperfect, 
but apparently four-sided. 
Codaster trilobafaxs, var. acutus. Pentremites ? astraformis, nom. 
nud., T. & T. Austin, 1842, Ann. Mag. Hat. Hist. (1) x, p. 111. Pentre¬ 
mites pentagonalis, E. Eorbes, 1848, Mem. Geol. Surv. Gt. Brit, ii (2), 
p. 529, la. Codaster acutus , E. McCoy, 1849, Ann. Mag. Hat. Hist. 
(2) iii, p. 251. Codonaster acutus , McCoy: C. E. Boemer, 1851, Arch. 
Haturges. xvii (i), p. 385 (excl. syn. “ Astrocrinites, Cumberland ”). 
Codaster et Codonaster acutus , McCoy: F. McCoy, 1851, in Sedgwick & 
McCoy, Brit. Pal. Eoss. fasc. 1, p. 123, pi. 3 D, f. 7. Codaster trilo- 
batus, var. acutus , McCoy: B. Etheridge fil. & P. H. Carpenter, 1886, 
Cat. Blastoidea Brit. Mus. p. 269. 
Codaster trilobatus , var. acutus , McCoy; B. Etheridge fil. & P. H. 
Carpenter, 1886, Cat. Blastoidea Brit. Mus. pp. 16, 269, pi. xiii, 
ff. 13, 15. Lower Carboniferous, Carboniferous Limestone : Settle, 
Yorkshire, England. [E. 8018.] One large theca, with more 
pointed base. 
Codaster trilobatus , var. acutus , McCoy: B. Etheridge fil. & P. H. 
Carpenter, 1886, Cat. Blastoidea Brit. Mus. pp. 16, 24, 55, 269, 
pi. xiii, ff. 12,14. Lower Carboniferous, Carboniferous Limestone: 
Settle, Yorkshire, England. [E. 8019.] A theca; the side-view, 
said to be from this specimen, is much restored. 
Codaster trilobatus , var. acutus , McCoy : B. Etheridge fil. & P. H. 
Carpenter, 1886, Cat. Blastoidea Brit. Mus. pp. 16, 23, 269, pi. xiii, 
ff. 9, 10, & pi. xvi, f. 2. Codaster trilobatus, var. acutus , McCoy: 
F. A. Bather, 1899, in E. Bay Lankester’s Zoology, Cap. Blastoidea, 
f. v, 1. Lower Carboniferous, Carboniferous Limestone : Settle, 
Yorkshire, England. [E. 8020.] Yery young theca. 
-., Lower Carboniferous (Carboniferous Limestone) : ? Bolland, 
Lancashire. [E. 835.] Gilbertson Coll. Four thecas. 
-. Lower Carboniferous, Carboniferous Limestone : Settle, York¬ 
shire, England. 
[E. 837.] Twenty thecas. 
[E. 839.] Eighteen thecas. 
[E. 8025.] One theca, showing ambulacra. 
[E. 8026.] Two thecas, showing covering-plates of peristome. 
