MEDUSA. 151 



Mgina, sp. 



Two specimens of iEgina were obtained in an open net which was 

 dragged from 250 fathoms to the surface. One of them was 28 mm. in 

 diameter, and they both possessed four slender, slightly greenish-colored 

 tentacles. They were too much damaged for description. 



(250 f — S)<i ; Station 1G; September 9 ; N. Lat. 2° 38', W. Long. 137° 22'. 



Solmaris sp. 



Two specimensof Solmaris, one 25 mm. and the other 40 mm. in diame- 

 ter, were brought up in an open net which had been dragged between 150 

 fathoms and the surface. They each had sixteen tentacles, and the gonads 

 were of a milky-yellow color. Unfortunately the margins of their bells were 

 too much damaged for specific identification. 



(150 f—S)''; September 1, 1899; N. Lat. 17° 32', W. Long. 135° 40'. 



Solmissus marshalli, sp. nov. 

 Plate 5, Jiffs. 33-25. 



The disk consists of a thick doubly convex, central portion, and a thin 

 outer annulus or collar region, and is 00 mm. in diameter. The gelati- 

 nous substance of the central region is very rigid, while that of the collar 

 region is flexible. Fourteen equally spaced stiff tentacles arise from the 

 periphery of the central disk. Each tentacle possesses a well developed 

 conical insertion base. The entodermal cells of the tentacles are chordate, 

 and are very thin and much crowded together. 



A well developed peronial thickening extends radially outward from the 

 base of each tentacle to the outer margin of the collar region. Owing to 

 the specimen being in a somewhat imperfect condition, only one sense organ 

 could be observed upon the outer edge of the collar region. This one 

 contained a single highly refractive otolith of remarkably small size. The 

 velum is well developed, and its powerful contractions serve to propel the 

 animal through the water. The stomach is wide and flat, and gives rise to 

 fourteen radiating pockets which are situated in the radii of the tentacles. 



