1890.] Zoölogy. 185 
Among these forms were Dorocidaris papillata (this was previously 
not supposed to occur north of the Gulf stream, off the coast of Florida); 
Schizaster canaliferus L. Ag., somewhat different from the type, prob- 
ably a geographical variety, Brissopsis lyrifera Ag. ; Phormosoma 
sigsbet A. Ag., Archaster bairdii sp. nov., in general appearance like 
A. parelli and A. agasszit; Ophioglypha aurantiaca sp. nov; O. con- 
Jragosa Lyman, the type specimens of which were dredged by the Chal- 
lenger off the La Plata in 600 fathoms ; Amphiura macilenta sp. nov., 
very abundant off Martha’s Vineyard; Zoxodora ferruginea, a new 
genus and species of holothurian ; Asteras briareus sp. nov., Ophiog- 
lyphia sarsii Lütken, which occurs in two varieties, one abundant 
in shallow water, the other, with less prominent disk-scales, common 
in the depths of the Bay of Fundy and off Nova Scotia; O. signata, 
sp. nov., not rare in deep water; and Antedon dentatum, first described 
by Say from Great Egg Harbor, N. J., as Alectro dentata 
At one spot two or three barrels of Ophoglypha sarsii came up at one 
haul ; and Archiaster agassizii occurred in great numbers in one spot, 
at 337 fathoms. 
The work of 1882 has obtained nearly all the species found in 1881, 
with the addition of the following: Solaster eariiit, Verrill, a Dia- 
dema-like sea-urchin with nine arms, and of a bright scarlet color ; 
Lophaster furcifer; Astrogonium granulare, Astrophyton lamarckii, 
also bright orange ; Asteronyx loveni M and Tr., found upon a penna- 
tulid at 7oo fathoms; a new Ophioscolex, and Rhizocrinus lofotensis. 
That the arms of an Ophiuran can be restored after they have been 
broken, or entirely lost, is well-known ; but Prof. Verrill has seen cases 
in which the entire dorsal disk, with the contained viscera, had been 
lost and more or less restored. The species exhibiting this strange 
power was Amphiura abdita V., and the specimens were taken among 
Zostera at Noank, Conn. The dorsal disk is soft and swollen, and 
easily torn away, leaving only the jaws connecting the arms. In some 
the new disk, though perfect in form, had not reached more than one- 
third or one-half the diameter of the old one. Prof. Verrill thinks it 
probable that his 4. macilenta is the true young of this species. 
The headquarters of the U. S. Fish Commission, during both 1881 
and 1882, were at Wood’s Holl, Mass. During 1882 only five trips 
were taken to the Gulf Stream slope, but these were successful ones” 
The total number of Invertebrata now on the lists of the fauna of this 
belt is about 575, and this neither includes the Foraminifera nor the 
Entomostraca, which are numerous, and but few of the sponges. Of 
those determined, about 265 are Mollusca, including 14 Cephalopods ; 
