328 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



mission, and two more specimens, both females, were obtained on eel- 

 grass in Casco Bay! in 1873. Five specimens were obtained adhering 

 to dried specimens of AcaneUa from 150 fathoms, Western Bank!, in 

 1878, and a sixth, in 53 fathoms, on Brown's Bank!, in lat. 42^ 50' K, 

 Ion. 65° 10' E., by Captain J. Q. Getchell, of the schooner ' Otis P. Lord,' 

 in the same year. In 1879 a specimen was obtained adhering to Acan- 

 tJiogorgia armata, by Captain George A. Johnson and crew of the schooner 

 'Augusta H. Johnson,' on Western Bank!, in lat. 43° 15' K, Ion. 50° 

 20' E., 200 fathoms. These specimens were, as has been mentioned, 

 considerably larger than those at first obtained. Kroyer's specimens 

 were from a depth of 50 fathoms, at Godthaab, Southern Greenland, 

 and according to M. Sars the species is abundant on the coast of Fin- 

 mark among Hydroids in the coralline zone. G. O. Sars records M. 

 BcecJcli Kroyer, which he regards as scarcely differing from this species, 

 at the harbor of Eeikjavik, Iceland. 



Specimens examined. 



IV.— MUNNOPSID^. 



In this family the body consists of two more or less distinct divisions, 

 the first consisting of the head and anterior four thoracic segments, and 

 the second of the last three thoracic segments, and the pleon, which is 

 consolidated into a single segment, convex above. The eyes are want- 

 ing. The antennuloe are much shorter and smaller than the antennae, 

 and have their basal segment lamelliform. The antennse are much elon- 

 gated, with a five -jointed peduncle, of which the first three segments 

 are short and the last two elongated and tipped with a long multi- 

 articulate flagellum. The maxillipeds have their basal segments flat- 

 tened and operculiform, covering the other mouth parts, and furnished 

 with a large external lamella and a five-jointed palpus. The first pair 

 of legs are shorter than the three following pairs and imperfectly pre- 

 hensile. The next three pairs are ambulatory and usually greatly elon- 

 gated. The last three pau's of legs, or at least the fifth and sixth pairs, 

 are different in form fi'om the preceding, and fitted for swimming, with 

 some of the distal segments flattened and provided with marginal cilia 



