FISHERY BULLETIN: VOL. 74, NO. 4 



NEMATOCYSTS (those of the southernmost 

 specimen within parentheses).— Margina/ tenta- 

 cles: microbasic 6-mastigophors 21 x 3.2-3.8 - 26 x 

 3.8, 36 X 4.4 - 41 X 4.9, 54.5 x 9.2 - 61 x 7.1 (25.3 x 

 3.8 - 28.3 X 4.4); atrichs 33 x 4.4 - 36 x 5.5 (9.8 x 

 1.6 - 27.5 X 2.7); spirocysts 20 x 3.3 - 56 x 6.5 (22 

 X 3.8 - 28 X 3.8-4.9). Labial tentacles: microbasic 

 6-mastigophors (axial filament short and thin, less 

 than half the length of the capsule) 37 x 3.8-4.4 - 

 45 X 5.5 (ca. 18.5 x 2.7); microbasic b- 

 mastigophors (axial filament = about half the 

 length of the capsule 20.7-35.4 x 3.8 (19.1 x 3.3 - 



30.5 X 4.9); microbasic 6-mastigophors (axial 

 filament tall and coarse; more than half the length 

 of the capsule) 57 x 8.3 - 63.7 x 7.1 (23.4-30 x 

 4.9-6); atrichs (not common) 55 x 9.8 - 63.7 x 28.3 

 (ca. 18 X 3.3); spirocysts 18 x 3.3 - 54 x 6 

 (14.7-16.8 X 2.7-3.3) jum. Holotrichs were very rare 

 (in the distal part of the column = 22.3 x 14.7 - 



43.6 X 17.4, and in the telocraspedon = 61 x 13.6 

 ium). 



Ceriantheopsis americanus (Verrill 1864) 



OCCURRENCE. -42°04'N, 67°30'W, 40 m, 

 gravelly sand, 1 specimen; 42°25'N, 70°56'W, 13 m, 

 1 specimen. 



GENERAL CHARACTERISTICS.-The prox- 

 imal parts of the two studied specimens were 

 missing. The individuals were young; the only 

 specimen, being preserved with a 12-mm-long 

 column part, had a diameter of 6 mm. The mar- 

 ginal tentacles were equipped with stout basal 

 parts and acute apices. The labial tentacles were 

 about 70 (69 in one specimen). 



NEMATOCYSTS.-Cohmr? (distal part): micro- 

 basic 6-mastigophors (not common) 19.6 x 3.8 - 



32.7 X 5.5; atrichs (very common) 26 x 6.5 - 50 x 

 10.9-16.4. Marginal tentacles: microbasic 6- 

 mastigophors 16.3 x 3.8-4.4 - 19 x 4.9; atrichs (?) 

 ca. 12 X 2.7, 8.7-12.5 x 4.9; spirocysts 12 X 2.7 - 

 27.3 X 4.9. Labial tentacles: microbasic 6- 

 mastigophors 16.3 x 3.8 - 32.7 x 6.5; spirocysts 

 13.6 X 2.7 - 27.3 x 4.9. Actinopharynx: microbasic 

 6-mastigophors (axial filament more than half the 

 length of the capsule) 21 x 4.9 - 32 x 6; microbasic 

 6-mastigophors (axial filament less than half the 

 length of the capsule) 13.6 x 2.7 - 18 x 3.3, 20.7 x 

 3.8 - 23 x 4.4. Filaments (orthocraspedon): 



microbasic 6-mastigophors 19-21 x 3.3, 26 x 5.4 - 

 33 X 6.5; spirocysts (very rare) ca. 21 x 3.8 jixm. 



Zoanthidea 

 Epizoanthidae 



Epizoanthus incrustatus Diiben and Koren 1847 



OCCURRENCE.-40°03'N, 71°16'W, 183 m, 4 

 specimens; 42°10'N, 65°37'W, 238 m, two colonies 

 with 10 and 19 specimens respectively, and one 

 solitary specimen, on a shell fragment. 



GENERAL CHARACTERISTICS.-The color 

 of the column and the coenenchyme is greyish 

 brown; both are strongly encrusted with sand 

 grains. The polyps were in the contracted state 

 about 5 mm tall, with the column diameter about 4 

 mm. Most of the 17 capitular ridges as well as the 

 insertions of the 36 mesenteries were indistinct 

 (because it is heavily encrusted with sand). The 

 tentacles numbered about 36. 



NEMATOCYSTS.-Co??m7?.- holotrichs 22 x 7 - 

 24 X 8.2; spirocysts 22 x 4.4 - 31 x 5.4. Tentacles: 

 microbasic p-mastigophors 22-33 x 3.3(35 x 6); 

 microbasic 6(?)-mastigophors 22-23.4 x 4.4; holo- 

 trichs 22-24 X 7.6-8.2 (common), 34 x 15.3 - 40 x 

 17.4 (not common); spirocysts (very common) 10 x 

 3.8 - 32 X 4.9. Actinopharynx: microbasic p- 

 mastigophors (not common) ca. 22 x 6; holotrichs 

 21-25 X 7.6, 38 x 14.2 - 41 x 14.7. Filaments 

 microbasic p-mastigophors 20 x 5.4 - 28 x 6.5 

 microbasic 6(?)-mastigophors 11 x 4.9 - 21 x 6 

 holotrichs 23 x 7.6 - 26 x 8.3 /xm. 



Corallimorpharia 

 Corallixnorphidae 



Corynactis delawarei n. sp. 



HOLOTYPE.— Deposited as a series of sections 

 in the Zoological Institute, Uppsala. Syntypes 

 deposited in the U.S. National Museum, catalog 

 number USNM 54322. Thirty-two specimens ag- 

 gregated on a tube fragment of an onuphid poly- 

 chaete, collected by the vessel Delatvare from the 

 type-locality on 14 June 1962, with a 1-m Nat- 

 uralist dredge, in station number 9. 



TYPE-LOCALITY.-39°56'N, 69°45'W, 201 m, 



858 



