316 MYXICOLA A. 
The figure of “ Sabella infundibulum ” given by Delle Chiaje (1829) in his “ Memorie,” 
Plate LXII, fig. 5, is more in accordance with this species than any other—both in regard 
to annelid and tube, and his description bears this out. 
Dalyell (1853) placed an example in a short glass tube which it filled with the secretion, 
and in time the jelly projected beyond the mouth of the tube. When the annelid rose upward 
the jelly projected nine lines above the orifice of the vessel. The animal reverses itself in 
the tube, and sometimes it forms an additional orifice above. He describes it as timid. 
Parasites.—M. Sars! (1861) found an ecto-parasitic Copepod, which he termed Sabella- 
cheres gracilis, attached to the skin of this species. The body of the female is somewhat 
elongate, linear, subcylindrical, obscurely segmented, or, 1t may be, unsegmented. Head 
elongate, not separated from the thorax, with two short antenne of few articulations, and 
a short conical rostrum. Three pairs of thoracic feet—widely separated, two being anterior, 
the third in the middle of the body, all natatory, triarticulate and biramose. Abdomen 
small, triarticulate. Ovigerous sac large, single, dorsal, cylindrical, and almost continuous 
with the posterior end of the body. Male unknown. 
This in all probability is the Wyazcola Steenstrupr of Kroyer,’ though the description is 
so lax that it is difficult to be certain. He did not observe the hooks. Kréyer’s* (1856) 
four species may yet be found to refer to the present form, viz., WM. infundibulum, M. Grubii 
from the Mediterranean, M. Sarsw from the North Sea, and M. Steenstrupi from Farée and 
Greenland. Claparéde thought the first two certainly were identical. 
De Quatrefages (1865) did not consider Montagu’s species occurred on the shores of 
France, and therefore he gave a new name to that which he found. As Claparéde has pointed 
out, the French author had misunderstood Montagu’s description, for the common species 
occurs both in the Channel and the Mediterranean as well as elsewhere. 
Pruvot* (1885) figures the “ giant fibre ” in the nervous system of this species as four 
or five times the size of the nerve-trunks below it. 
Cunningham and Ramage (1888) apparently considered Myazcola Steenstrupi, Kroyer, a 
different species from M. infundibulum, but, so far as known, it 1s the same form. 
So far as can be observed from the description and drawings, Myxicola conjuncta of 
Miss Bush® (1908) agrees with this species in structure and in coloration. She attributes 
long sete with simple, curved tips to M. Steenstrwpi, which she procured from the Bay of 
Fundy, but the European authors are inclined to unite this species with the present. 
From the description and figures of Hofsommer (1913) his Myzxicola Steenstrupi would 
appear to agree with WM. infundibulum. 
Myxicota A. 
A Myzicola, procured between tide-marks, Herm, in 1868, offers certain peculiarities 
distinguishing it from M. infundibulum and M. viridis, as well as M. Dinandensis of De 
1 «Forhand]. Vidensk.-Selskabet, Christ.,’ p. 142. 
? “Oversigt Kol. danske Vidensk. Selsk. Forhandl.,’ 1856, p. 35. 
3 [bid., 1856, p. 35. 
* «Archiv Zool. Expér.,’ 2° sér., t, i11, pl. xvi, figs. 7 and 8. 
* “Tubic. Annel. Pacific,’ p. 217, pl. xxvi, figs. 1—4a, pl. xxxviu, figs. 1—11. 
