NEW SPECIES OF HYDROIDS — FRASER 85 



internode in the regular type is much elongated, tubular, and slightly 

 curved outward distally to end in a hydrophore; then from this pedicel 

 of the hydrophore, a short distance from the distal end, the pedicel 

 for another hydrophore is given oflP. These in succession form a series, 

 alternately curving to one side and the other and thus maintaining a 

 linear stem or branch. From within each main hydrophore there is 

 usually another hydrophore developed with a much shorter and some- 

 what slenderer pedicel. In some cases this hydrophore is duplicated. 

 The rim of the hydrophore flares but slightly. 



Gonosome,. — Not observed. 



ry/?^.— U.S.N.M. No. 22926. Taken by the United States Fisheries 

 steamer Fhh Haiok at station 940, latitude 39°54' N., longitude 

 69°51'30" W., off Marthas Vineyard, 134 fathoms, August 4, 1881. 



Remarks. — This Haleciwni has somewhat the same general appear- 

 ance as H. kiikenthali Marktanner-Turneretscher, but as a colony it 

 is more rigid and less branched ; the internodes, or rather hydrophore 

 pedicels, are relatively much longer, and, most noticeably, they lack 

 the annulations that are so conspicuous in H. hukenthali. 



Family LAFOEIDAE 



Genus LICTORELLA Allman 



LICTORELLA CRASSITHECA, new species 



Plate 18, Figuee 12 



Trophosome. — Main stem and the proximal portions of some of the 

 branches fascicled, branching inclined to be pinnate but irregular; 

 occasionally secondary branches appear. There are no noticeable nodes 

 in the ultimate branches, but the hydrothecae are given off in regular 

 alternation. There is a distinct shoulder at the origin of each hy- 

 drotheca on which the pedicel of the hydrotheca seems to be somewhat 

 displaced upward or outward ; the pedicel is distinct, with one distinct 

 annulation. The hydrotheca widens quickly at the base and the re- 

 mainder is nearly cylindrical, except that it shows a slight campanulate 

 tendency near its margin, which is entire. The width is much greater 

 relative to the length than in other species. The diaphragm is distinct 

 but does not reach in far from the wall of the hydrotheca. The nema- 

 tocysts are scarce ; none was observed on the branches and few on the 

 fascicled stem. 



Gonosome. — Not observed. 



ry;?6.— U.S.N.M. No. 43456, Gulf of Maine, 17 fathoms. Also taken 

 at Albatross station 2430, latitude 42°58'30" N., longitude 50°50' W., 

 southeast of Sable Island, 179 fathoms, June 23, 1885. 



406740—41 2 



