FISHERY BULLETIN: VOL. 74, NO. 4 



NEUATOCYSTS.-Column: basitrichs 19 x 2.7 

 - 35.4 X 2.7-3.3; spirocysts 24.5 x 3.3 - 57 x 5.5-6. 

 Tentacles: basitrichs 26 x 2.2 - 41 x 2.7 (most 

 often 30-35 x 2.7); microbasic 6-mastigophors (in 

 the apex) 42.5 x 7.1 - 56 x 7.1-8.2; spirocysts 27 x 

 2.7 - 64 X 7.6. Actinophanjnx: basitrichs 21-32 x 

 2.7; microbasic p-mastigophors 22-28 x 4.9. 

 Filaments: microbasic p-mastigophors 21-28 x 

 4.4, 20-29 X 5.5 jum. The cnidom in specimens from 

 the eastern North Atlantic was described by 

 Carlgren (1940a). 



Stomphia coccinea (Miiller 1776) 



OCCURRENCE.-41°20'N, 69°22'W, 49 m, 3 

 specimens; 41°37'N, 66°16'W, 91 m, sand, 4 

 specimens; 42°18'N, 65°28'W, 113 m, sandy gravel, 

 1 specimen; 42°32'N, 65°39'W, 95 m, gravel, 1 

 specimen; 42°40'N, 65°56'W, 91 m, sandy gravel, 4 

 specimens; 43°10'N, 66°04'W, 92 m, gravel, 1 

 specimen; 43°21'N, 66°22'W, 60 m, shelly gravel, 2 

 specimens; 44°12'N, 66°36'W, 91 m, gravel, 1 

 specimen; 44°16'N, 66°28'W, 201 m, gravel, 1 

 specimen; 44°24'N, 67°14'W, 90 m, till, 1 specimen; 

 44°25'N, 66°25'W, 188 m, till, 3 specimens; 44°26'N, 

 66°19'W, 174 m, till, 1 specimen. 



GENERAL CHARACTERISTICS.-The mor- 

 phology of the studied specimens agrees with 

 earlier descriptions made of the species (e.g., 

 Carlgren 1893). The height of the contracted 

 column is 3-28 mm. The pedal disc is wide with a 

 distinct limbus. The relations between the length 

 of the column and the diameter of the pedal disc is 

 in the contracted state 14/23-7/17. The meso- 

 gloeal, diffuse sphincter is distally very strong 

 (Figure 5A). The tentacles, conical and longi- 

 tudinally furrowed with an apical pore, are ar- 

 ranged in four (sometimes five ?) cycles. The 

 tentacular muscles are mesogloeal (Figure 5B). 

 The number of mesenteries varies (in one of the 

 larger specimens it is equal to 120 in the pro.ximal 

 part of the body). Most often (with the exception 

 of the southernmost specimens) there are 16 pairs 

 of perfect and sterile mesenteries. (In the 

 specimens from 41°20'N, the number of perfect 

 and sterile mesenteries is approximately 24-29, 

 with an organization reminiscent of that in, e.g., 

 Parasicyonis.) The long, folded actinopharynx is 

 equipped with two siphonoglyphs (Figure 5C). All 

 the imperfect mesenteries excluding those of the 

 last cycle are often fertile (Figure 5D), the oocytes 

 being provided with well-developed nurse cells 



868 



(Figure 5F) during oogenesis. The parietobasilar 

 muscles form even in very young individuals their 

 own lobes high up in the column (Figure 5D, E). 



NEMATOCYSTS. -Co/i/mn: basitrichs 12- 

 20 X 2.2-2.7, 30.5-38 x 4.4-5.5. Tentacles: basi- 

 trichs 14 X 2.2 - 24.5 X 3.3; microbasic 6-masti- 

 gophors (30.5 x 6.5 -) 39-53 x 6.5-7.1; spirocysts 

 19 X 3.3 - 50 X 4.4-5.5 (in the young specimen 

 from 44°24'N, the column of which was 3 mm high 

 and the number of tentacles equal to 36, there 

 was a somewhat different size for the tentacular 

 nematocysts: basitrichs 15 x 2.2 - 22 x 2.7, 

 microbasic 6-mastigophors 28 x 5.3 - 33 x 7.1, 

 spirocysts 14-22 x 2.7-3.8 jum). Actinopharynx: 

 basitrichs 14 x 2.2 - 23 x 3.8; microbasic p- 

 mastigophors 18 x 3.3 - 27 x 4.9; spirocysts 22 x 

 3.8-57 X 4.9-5.5. Fi/amenfs: basitrichs 9.5 x 2.2- 

 22 X 2.7; microbasic p-mastigophors (17 x 3.8 -) 19 

 X 4.9 - 29 X 5.5, 24 x 3.3 - 29 x 3.3-4.4 /xm. 



My placing of the three specimens from the 

 southernmost station within S. coccinea may be 

 discussed. In some morphological characteristics, 

 they resemble Anthosactis as well as Parasicyonis; 

 apart from the development of the perfect mes- 

 enteries, the morphological differences between 

 these, obviously young individuals, and the adult, 

 typical S. coccinea are, however, not so com- 

 prehensive as to require description of a new 

 subspecies. 



Paranthus rapif omits (Lesueur 1817) 



OCCURRENCE. -37°49'N, 75°25'W, 12 m, 

 sand-silt-clay, 1 specimen. 



GENERAL CHARACTERISTICS.-The col- 

 umn is smooth, much wider distally than prox- 

 imally, and with a reddish brown color. The length 

 of the column is 26 mm, with the proximal 

 diameter 8 mm; the distal is 23 mm. The numerous 

 tentacles are arranged in five (six ?) cycles. They 

 are imperfectly retractile and acuminate. The 

 sphincter is mesogloeal, of diffuse type, and weak. 

 The yellowish, longitudinally folded actino- 

 pharynx is provided with two siphonoglyphs. The 

 mesenteries are proximally fewer than distally, 

 where they are arranged in four cycles (6-(-6-i- 

 12-1-24 pairs). Twelve pairs of mesenteries 

 (including the two pairs of directives) are perfect. 

 The mesenterial retractors are of diffuse-restrict- 

 ed type. The parietobasilar muscles are only 



