NARCOMEDUSAE 77 



in two localities off the coast ot Portugal and near the Azores, later by the same author (1936) between 

 the Azores and North America; south of the Canary Islands and in the Gulf of Guinea (Kramp 1955); 

 between the Cape Verde Islands and the north-east coast of Brazil (Vannucci 195 16 and the present 

 specimen). Damas (1936) found larvae, presumably belonging to this species (under the name of 

 Ciinina lativentris), parasitic in Tomopteris in three localities west of the Strait of Gibraltar and also 

 in the Bay of Biscay. The records by Thiel (1936) with his accompanying map of distribution are 

 unreliable, because he united several different species under the name Cunina riibiginosa. 



Pegantha triloba Haeckel 1879 



1879 Pegantha triloba Haeckel, p. 333. PI. 19, figs. 4-7. 



1908 Polyxenia cyanogramma Vanhoffen, p. 56. PI. 2, fig. 8. 



1909 Pegantha triloba Bigelow, p. 87. PI. 14, fig. 3; PI. 16, fig. 3; PI. 20, figs. 1-3; PI. 45, figs. 1-2. 



1910 Pegantha triloba Mayer, p. 443. Figs. 293, 294, 297. 

 1912a Pegantha triloba Vanhoffen, p. 389. Fig. 22. 



19126 Pegantha triloba Vanhoffen, p. 30. PI. i, figs. 11-12. 



1918 Pegantha triloba Bigelow, p. 395. 



1948a Pegantha triloba Kramp, p. 15. 



19486 Pegantha triloba Kramp, p. 11. 



1949 Pegantha triloba Ranson, p. 134. 



Occurrence: No station number. 29. ix. 25. 25" 47' S, 14' 48' W. Net: HN o m. 7 specimens. 



St. 291. 24. viii. 27. 03° 46' N, 16° 49' W. Net: TYF loo(-o) m. i specimen. 



St. 2063. 2. V. 37. 03° 24' 48" S, 07° 51' 12" W. Net: N 450 B 1150-600 m. i specimen. 



The first of these localities is about mid-way between South America and South Africa, the two 



others are outside the Gulf of Guinea. 



The two specimens from Stns 291 and 2063 are 25 mm. wide with 14 tentacles, and 23 mm. wide 



with 13 tentacles respectively; they are well preserved and typical specimens, their gonads are well 



developed and distinctly tripartite with finger-shaped lobes. The seven specimens from the first 



locality are young stages with the following dimensions: 



Diam. (mm.) 5 5 5 6 7 7 15 



No. of tentacles 13 13 14 14 12 15 15 



Otoporpae per lappet 3 5 5 5 5^7 



The jelly is thick and rigid; the radiating keels on the exumbrella, typical of this species, are very 

 distinct in the marginal zone, but in the central part they are less pronounced than in the adult 

 specimens. Otoporpae run along the entire length of the gelatinous keels, the median one from each 

 lappet reaching right to the top of the umbrella, meeting in the centre, the others join it at different 

 distances from the marginal zone. Gonads are not developed. These young specimens are very 

 similar to that figured by Vanhoffen (1908, PI. 8, fig. 8) under the name of Polyxenia cyanogramma. 



Distribution. Widely distributed in the tropical parts of all the great oceans, but apparently not 



very common in the Atlantic. 



Genus Solmaris Haeckel 



Here again Thiel (1936, pp. 58 flF.) has gone much too far in uniting almost all the species under 

 one name, S. flavescens (Kolliker). As the genus is represented in the Discovery collection by one 

 specimen only, I shall abstain from any attempt on a revision of the species for the present. 



Solmaris corona (Keferstein & Ehlers 1861) 



1 910 Solmaris corona Mayer, p. 437. 



1953 Solmaris corona Russell, p. 476. PI. 28, fig. 2. Text-figs. 313, 314. 



Occurrence: St. 100. 30. ix-i. x. 26. 33° 20' S, 15° 18' E to 33° 46' S, 15° 08' E. Net: TYF 0-5 m. i specimen. 



