58 bulletin: museum of comparative zoology. 



velum is well developed. There are 4 linear, slightly convoluted gonads. 

 They begin about halfway between the circular vessel and the peduncle, and 

 extend to a point close to the proboscis. The peduncle is well developed and 

 reaches slightly beyond the velar opening. The gastric portion of the pro- 

 boscis is short and is furnished with 4 slightly fimbricated lips. The probos- 

 cis, gonads, and tentacle bulbs are opaque white. Common at the Bahamas 

 and Tortugas in the spring and winter months. 



EUTIMIUM, Haeckel, 1879. 

 Eutimium serpentinum, nov. sp. 



Figs. 69-73, Plate 23. 



Specific Characters. — The bell is 10 mm. in diameter, and about 2^ times as 

 broad as it is high. There are 4 radially situated tentacles ; each being 

 about as long as the bell diameter. There are no lateral or marginal cirri. 

 The 8 otocysts are situated near to and on both sides of the radial tentacles. 

 (Figure 70.) Each otocyst contains 4-8 spherical otoliths. The velum is well 

 developed. There are 4 straight narrow radial tubes and a narrow circular 

 vessel. The proboscis possesses a very long peduncle, which is about 3 times 

 as long as the bell diameter. The upper region of the peduncle is conical in 

 shape; then follows a long slender cylindrical region leading to the gastric 

 part of the proboscis, which is urn-shaped with 4 slightly recurved lips. 

 (Figure 71.) The 4 gonads are situated upon the long cylindrical portion of 

 the peduncle, where they lie upon the radial canals. (Figure 72.) The pro- 

 boscis, gonads, and tentacles are opaque bluish-white. Half a dozen specimens 

 of this medusa were found at the Tortugas, Florida, late in July, 1898. It is 

 closely allied to Eutimium elephas, Haeckel (1879 ; Syst. der Medusen, p. 190, 

 Taf. XII. Figures 10-12), of the German Ocean. 



PHORTIS, McCrady, 1857. 

 Phortis lactea, nov. sp. 



Fig. 133, Plate 40. 



Specific Characters. — The bell is 5 mm. in diameter and the sides flange 

 slightly outward at the margin. The gelatinous substance is of moderate 

 thickness at the aboral pole, but becomes thin at the margin of the bell. There 

 are about 18-22 short simple tentacles, the basal bulbs of which are large and 

 swollen. These tentacles are only about one fifth as long as the bell diameter. 

 There are no lateral or marginal cirri. The otocysts are slightly more numer- 

 ous than the tentacles, there being at least one, and occasionally two, of these 

 structures between each successive pair of tentacles. Each otocyst contains a 



