No. 1623. NOMENCLATURE OF RECENT CRINOIDS—CLARK. 533 
Type-locality. —28° 33’ south latitude, 177° 50’ west longitude 
(near the Kermadec Islands) ; or 4° 33’ north latitude, 127° 
06’ east longitude (off the Meangis Islands) ; 600 or 500 
fathoms. H. M.S. Challenger. . 
altérnicirra=with alternating cirri. British Museum. 
This name is frequently given as “ alternicirrus.” 
Pentacrinus arndtii ScnHuirze, 1858. 
1858. Scnuurze, Bericht. u. d. Versamml. deutsch. Naturf. in 
Karlsruhe, 1858, p. 293. 
A nomen nudum. 
Pentacrinus balfouri Wyvittn THomson MS. 
Specimens of Pentacrinus naresianus P. H. Carpenter, 1882, 
were distributed under this name, which was originally applied 
by Sir Wyville Thomson to the species. It has, of course, no 
standing whatever in zoological nomenclature, but is merely 
inserted for the benefit of those who have received specimens 
thus labeled. 
Pentacrinus blakei P. H. Carpenter, 1882. 
1882. P. H. Carpenter, Bull. Mus. Comp. Zool., X, No. 4, p. 
167; detailed description, p. 172; first mentioned, p. 166. 
Type-locality —Off Montserrat in !20 fathoms; or off Barbados 
in 200 fathoms. U.S. S. Blake. 
UxSiS. blake: Museum of Comparative Zoology. 
This specific name was misspelled “ blakii” by Bell (Zool. 
Record for 1882, Echinod., p. 10 [1883]). 
Pentacrinus europeus J. V. THompson, 1827. 
1827. J. V.THomerson, A Memoir on the Pentacrinus europeus, 
Cork, 1827, p. 1, pls. 1, 1. 
Type-locality—Cove of Cork, Ireland. 
europeus=of Europe. 
Pentacrinus europeus is the stalked larva of Asterias bifida 
Pennant, 1777. 
Pentacrinus guettardi Scuuurze, 1858. 
1858. Scnunrzn, Bericht u. d. Versamml. deutsch. Naturf. in 
Karlsruhe, 1858, p. 293. 
A nomen nudum. 
Pentacrinus maclearanus WryviLLE THomson, 1877. 
1877. Wyvirwe THomson, The Atlantic (London), II, p. 113, 
fig. p. 112. 
Type-locality.—9° 05’ north latitude, 34° 50’ west longitude; 
350 fathoms. H. M. S. Challenger. 
Commander J. L. P. Maclear, R. N. British Museum. 
This name was emended to maclearianus by Lockington in 
1884 (Standard Natural History, I, p. 145). 
Proc. N. M. vol. xxx1v—08—— 35 
