58 



BULLETIN OF THE BUREAU OF FISHERIES. 



Family PEGANTHID^. 

 No radial canals or gastric pouches, but peronial canal present. < (toporpse as in preceding. 



Family /£GINID£. 



Double peronial canals connecting the gastric pouch with the marginal canal, 

 present. Otoporpse lacking. 



ffiGINA Eschscholtz (1829). 



.ffigina pachyderma ( A. Agassiz). Text cut. 



Campanellapachyderma A. Agassiz, N'urth American Acalephse, 1865, p. 52. 

 JEgina pachydt nun Haeckel, System der Medusen, 1879, p. 339. 



Bell somewhat conical, slightly broader than high, L.5 mm 



Interradial pouches 



dSgina pachydermia. After A. Agassiz, 



I have not seen this medusa, the above descriptii 



v 1 mm. Marginal tentacles 4, rather 

 long and arched, with numerous clus- 

 ters of nematocysts, and with ocellate 

 spots on the bulbous base of each. 

 Manubrium well developed, conical 

 in shape, and with plain mouth, gen- 

 ital pouches 8, sj mmetrically disposed 

 about the manubrium base. Radial 

 and marginal canals well defined. 



' olor. — Hell dull yellowish, with 

 darker spots scattered over the surface; 

 tentacle basis brownish red. 



Distribution. — Nahant, September 

 I Agassiz). 

 n being compiled from that of Agassiz. 



Family SOLMARlDvE. 



No marginal or peronial canals: sometimes radial canals or modified radial canals. Otoporpse 

 absent. 



SOLMARIS Haeckel I 1879). 



Solmaris tetranema Hargitt. Text cut. 



Solmaris Haeckel, System der Medusen, 1879, p. :>». 

 Solmaris tetranema Hargitt, Biological Bulletin, Vol. IV, 

 1902, p. 18. 



Bell Hat, discoid, about three times broader 

 than high, it mm. by :; mm. Exumbrellar sur- 

 face convex, of firm consistency, and with a soft, 

 flexible collar region indefinitely marked off from 

 the former. Medusa without circular or peronial 

 canals. Velum fairly developed. Gastric pouches Solmaris tetram ma. 



small, and without distinguishable radial canals. 



No signs of gonads present. Tentacles 4, of similar size and inserted high upon the sides of the bell, 

 terminating proximally in sharp inwardly directed ends; tentacles stiff over proximal half, but attenuate 

 and rather flexible distally, the endodermal cells in this region seeming much less crowded than 

 proximally. Alternating with these primary tentacles were \\ hat appeared to be 4 undeveloped or 

 rudimentary tentacles. At first these were thought to be associated with sensory bodies, but the 

 absence of otocysts or similar structure seems to indicate their tentacular nature. 



A single specimen was obtained near the Gulf Stream and had the appearance of immaturity; 

 being also somewhat damaged, accurate determination was not practicable, yet I have proposed for 

 it the provisional name "tetranema," indicative of the number of tentacles. 



