Verrill, Notes on Radiatn. 371 



composed <»t' long, stout ])Uites, witli tlie postorior j)oints longest. 

 The suckers scattered over the surface are, also, inucli less luinierous 

 than in T. Bruireus. 



Occurs uiulcr (load corals in the shallow tide pools and holes in the reels at the 

 Abrolhos and elswhere. — c. f. ii. 



Chirodota rotiferum Stiini)Son, Amcr. Joum. Sci , 29, p. 1:54, 1860. 



? Synapkt, rotifvra Pourtales, Proc. Am. Assoc., 1851, p. 15. 

 Ghriodota rotifera Selenka, Zeitschr. fur Wiss. Zool., 1867, p. 367. 



Plate IV, figures 9, 9'. 



Elongated and slender, tlie whole surface thickly coveretl with 

 small, white, slightly ])rominent verruca\ Tentacles 12, short, with 

 about five digitations ui)on each side, the two terminal ones longest. 

 Color, in alcohol, light })urplish brown. The specimens, Avhich are 

 not entire, ai'e two or three inches long, and about '25 in diameter. 



The calcareous, wheel-slniped bodies in the skin, are all very minute, 

 but variable in size, provided with 6 spokes, which are often thinner 

 along the middle, so as sometimes to a])pear almost as if double, rim 

 narrow, center not perforated. With these thei-e are larger, oblong, 

 irregularly shaped, calcareous bodies, mostly enlarged and truncated 

 at the ends. 



Abrolhos Reefs, with the preceding, — C. F. Hartt. Florida, — 

 Pourtales. 



The two specimens obtained api)ear to agree perfectly Avith the 

 description by Pourtales. AV^hether (.\ pygmma Midler be the same 

 species, can be ascertained only by a comparison of specimens from 

 the dirterent localities. Should this prove to be the case, Miiller's 

 name will have priority. 



No. 5. — N^otice of (I (Jollectioti of Echhuxlerins from. La P<iz^ Loicer 

 ('i(Ufornl((, im.th Descriptions if <i new Genus. 



Pul)lished April, 1868. 



Thh: Museum of Yale College recently received a small but very 

 interesting collection of l^k'hinoderms, collected by Capt. James 

 Pedersen, in the lower i)art of the Gulf of California, whicli gives 

 us some additiojial knowledge of the marine fauna of that very 

 prolific region. In these Transactions, I published last year a des- 

 criptive catalogue of the Echinoderms contained in the Yale Museum 

 from the west-tropical coast of America ; Init in this small lot there 

 are two s[)ecies, not known to me at that time, one of which appears 

 to be a new and remarkal)le genus of starfishes. 



