1885.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 447 



the upper lougest; tentacle- scales small, spiuiform; mouth-shields small, 

 rhombic ; mouth papilke several, small, iu a regular row. 



Off Martha's Viueyard, iu 1,362 to 2,033 fathoms, 1883. Locally abuu- 

 tlant on Scleroptilum gracile V. 



HYDEOIDA. 



Cladocarpus flexilis Veirill, sp. uov. 



Verrill, Report U.^ S. Fish Com. [p. 35] for 1883, pi. 10, fig. 29, 1885. 



Stem tall, slender, tiexible, sparingly branched; branches with long, 

 slender pinnae ; calicles narrow, elongated, closely appressed, separated 

 by intervals equal to about half their length ; margin prolonged dor- 

 sally into a small, acute denticle; dorsal surface but little convex, an- 

 terior half nearly parallel with the branch. The posterior median 

 nematophore is rather large, situated close to the posterior end of the 

 calicle, or a little behind it, with its opening oblique and directed up- 

 ward and outward; the lateral nematophores are smaller, cup- shaped, 

 and project forward but little beyond the margin of the calicle. Oppo- 

 site each calicle there are five or six internal transverse divisions of the 

 branch and about three in the intervals between the calicles. The gono- 

 thecse are few, moderately large, ovate, borne on sparingly branched 

 processes arising from the stem at the bases of the pinnules. Color, 

 light yellowish horn-color. Height from 100'"'" to 200™"". 



Very common in 70 to 125 fathoms, on hard spongy bottoms, off Mar- 

 tha's Vineyard to Cape Hatteras. 



TUNICATA. 



Culeolus Tauneri Verrill, sp. nov. 



Verrill, Report U. S. Fish Com. for 1883, p. 27, pi. 31, figs. 144, 145, a, h, 1885. 

 Stem long, slender, somewhat decreasing in size from the base to the 

 summit. Body irregularly pear-shaped, the lower end tapering to a coni- 

 cal form, where it joins the stem, while the stem itself can be seen ex- 

 tending upward about 15 to 20'""" along the dorsal margin, where itforms, 

 for that distance, a rounded midrib, terminating in a j)rominence in one 

 specimen and at a depression in another. The dorsal margin is nearly 

 straight, but swells out a little iu the middle, and is subcarinate, with a 

 row of small scattered papillae along the ridge. The distal end is large, 

 rounded, swollen, and bordered on each side by a distinct keel, which is 

 covered with several crowded rows of prominent, rough, though soft 

 papillae, which merge into a large, triangular patch of similar but larger 

 papillae, situated on the dorsal side near the distal end, where the dor- 

 sal carina meets the lateral ones ; the papillae in this cluster are large, 

 stout, tapering to a j)oint, and covered on all sides with minute, conical 

 spinules. The lateral rows of papillae extend back to about the middle 

 of the body on the ventral side, where they meet, thus inclosing a large 



