WITH LIST OF SPECIMENS. 
25 
Orbitremites concinnuliis. Granatocrinus concinnulus, R. R. Rowley 
& S. J. Hare, Aug. 1891, Kansas City Scientist, v, p. 117, pi. iii, ff. 13, 
14. 
Orbitremites ? cnrtus. Pentremites curtus , B. F. Shnmard, 1855, 1st 
and 2nd Rep. Geol. Surv. Missouri, pt. ii, p. 187, pi. B, ff. 3 a-b. Ela.a- 
crinus curtus (Shumard) : B. E. Shumard, 1863, Trans. Acad. Sci. 
St. Louis, ii, p. 112. Granatocrinus curtus (Shumard) : B. E. Shumard, 
1866, Trans. Acad. Sci. St. Louis, ii, p. 375. Granatocrinus ? curtus 
(Shumard): R. Etheridge fil. & P. H. Carpenter, 1886, Cat. Blastoidea 
Brit. Mus. p. 248. 
Orbitremites derbiensis. Pentremites derbiensis, G. B. Sowerby, 1825, 
Zool. Journ. ii, p. 317, pi. xi, f. 3. Orbitremites derbiensis (Sow.) : T. & 
T. Austin, 1842, Ann. Mag. Hat. Hist. (1) x, p. 111. Pentatrematites 
derbiensis (Sow.) : C. E. Roemer, 1851, Arch. Naturges. xvii (i), p. 364. 
Granatocrinus derbiensis (Sow.) : R. Etheridge fil. & P. H. Carpenter, 
1882, Ann. Mag. Hat. Hist. (5) ix, p. 239; and 1886, Cat. Blastoidea 
Brit. Mus. p. 250. 
Pentremites derbiensis , Sow. : J. Phillips, 1836, Geol. Yorksh. ii, 
p. 207, pi. iii, f. 10. Lower Carboniferous, Carboniferous Limestone : 
England. 1 [E. 8137.] Gilbertson Coll., No. 79. A theca. 
Granatocrinus derbiensis (Sow.) : R. Etheridge fil. & P. H. Carpenter, 
1886, Cat. Blastoidea Brit. Mus. pp. 12, 250, pi. ix, f. 4. Lower 
Carboniferous, Carboniferous Limestone : England \ [E. 8047.] 
Gilbertson Coll., No. 79. A small theca ; if really the figured speci¬ 
men, as which it was handed over by the authors, then the figure is 
magnified 6 diameters and is not much like the original. 
Granatocrinus derbiensis (Sow.) : R. Etheridge fil. & P. H. Carpenter, 
1886, Cat. Blastoidea Brit. Mus. pp. 9, 250, pi. vi, f. 23. Lower 
Carboniferous, Carboniferous Limestone: England 1 . [E. 8048.] 
Gilbertson Coll., No. 79. Theca with two columnals attached. 
Granatocrinus derbiensis (Sow.): R. Etheridge fil. & P. H. Carpenter, 
1886, Cat. Blastoidea Brit. Mus. pp. 46, 250, pi. xvii, f. 4. Lower 
Carboniferous, Carboniferous Limestone: Bolland, Lancashire, 
1 The locality of the 9 specimens of Pentremites (vel Granatocrinus vel Orbi¬ 
tremites) derbiensis from the Gilbertson collection is doubtful. G. B. Sowerby in 1826 
said, “ Mr. White Watson . . . supposes them [the cotypes] to be peculiar to Derbyshire, 
and states that they belong to the twenty-sixth bed of limestone.” In 1828 G. B. 
Sowerby quoted Gilbertson as saying of specimens of other species from his collection: 
“The Pentatrematites are all from the Calamine mines belonging to the Duke of 
Buccleugh, near Whitwell in Bowland, on the Lancashire side of the Odder.” In 
1836, J. Phillips gave as localities for this species “ Grassington ; Derbyshire.” The 
latter name may refer to Sowerby’s specimens only ; the former, almost certainly, refers 
to Gilbertson’s, or at least to some of them. Gilbertson’s MS. list and the Register of 
the Zoological Department (41.6.18.116-125) say nothing as to the locality; but, 
when transferred to the Geological Department, the specimens were registered as from 
“ Bolland.” Etheridge & Carpenter, in 1886, alluded to one of the Gilbertson specimens 
(pi. vi, f. 23) as from “ Lancashire.” Grassington, which seems the most probable 
locality, is in the West Riding of Yorkshire, 10 miles N. of Skipton. Calamine and 
lead mines are worked in the Carboniferous Limestone there. 
