ANTHOMEDU8.* TURRI8. 



127 



each of the 1 6 tentacles. The velum is well developed. There are 4 broad, flat, smooth-edged 

 radial-canals and a broad, simple, circular vessel. The 4 radial-canals enter the stomach by 

 4 wide tunnel-like openings. The manubrium is wide and tills the greater part of the bell- 

 cavity. The 4 lips are recurved and their edges much tolded. The 4 gonads are developed 

 on the interradial sides of the stomach. Each gonad is horseshoe-shaped, the apex of the 

 horseshoe being uppermost, and the sides composed of partially fused, transverse ridges upon 

 the ectoderm of the stomach-wall. The entire gelatinous substance of the medusa is of a 

 delicate rose-pink. 



The entoderm of the manubrium and tentacles is of a rich rose-color and the entodermal 

 nut' of the stomach is emerald-green. This medusa is quite common at Tortugas, Honda, 

 and among the Bahamas in the summer months. It is one of the most beautiful of American 

 medusae. 



Turris breviconis Murbach and Shearer. 



Turrit hrei-iconis, Mi'RBAfl! AND SHKAKKK, 1902, Annals ami Mag. Nat. Hist., ser. 7, vol. 9, p. 73; 1903, Proc. /..nl. s.u . 

 London, vol. 2, p. 170, plate 18, figs. I, 2. 



Bell cubical, 45 mm. high, 35 mm. wide. More than 140 tentacles in double rows, with 

 contractile muscles on their inner sides and enlarged ectoderm on their outer sides. No 

 ocelli in preserved specimens. Gonads and stomach occupy less than halt of the upper part 

 of the hell-cavity. 4 broad radial-canals with unbranched lateral diverticula. Bell bluish, 

 tentacles, gonads, and stomach dark-red or purple. 



St. Paul Island, Piihylott' Islands, North Pacific. 



Turris coeca Hartlaub. 



Turns rrecu, HARTIM-R, 1892, Nachrichten kgl. Gesell. Wissen. Gimingen, p. 19, fig. i. MAAS, 1904, Result. Camp. Sci. 



Prince de Monaco, fasc. 28, p. 17, planchr I, fig. 5. 

 Tinrclhi fHirlhfrifjf'tifti, TRINCJ, 1907, Archiv. Ital. Anat. Embr. Firenze, vol. 5, p. 533 (development and structure of ooevtes). 



Bell about 30 mm. high and with 24 to 30 tentacles of various lengths. The tentacle- 

 bulbs l<ifk ocelli. The radial-canals are wide and flat and there 

 are a few globular lobes along their edges. The stomach is 

 wide and the lips complexly folded. The 4 interradial gonads 

 are composed of horseshoe-shaped swellings. The ridges are 

 lateral cross-folds in the 8 adradii, but in the mterradius at the 

 apex of the horseshoe, near the base of the stomach, they form 

 a reticulated network. 



The stomach is rose-colored to wine-colored, and the ten- 

 tacle-bulbs are yellow. 



Found at Naples and Monaco, Mediterranean, in Febru- 

 ary and March. 



Turris pelagica Agassiz and Mayer. 



Turrit prla^irn, AGASSI?, A., and MAYF.R, 1902, Mem. Museum Comp. 7.ool. at 

 Harvard College, vol. 2(1, p. 142, plate \, fig. 2. 



Bell id mm. in height and o mm. wide, and the sides are 



O * 



I'K,. (17. --Gonail of Tmrii creca, after barrel-shaped, being wider at the middle than at either end. 

 Maas, in Result. Camp. There is a small, solid, apical projection. The bell-walls are 

 very thin and <|uite flexible. There are about 30 short tentacles, 



less than half as long as the bell-height, all being of the same size. These tentacles all arise 

 from the bell-margin and their bases are large and conical. There are no ocelli. The velum 

 is well developed. There are 4 radial tubes which are flat and qujte broad, being narrower 

 near the circular canal than at any other place. Their outer edges are jagged, excepting in 

 the narrow parts near the circular canal. The manubrium is large and fills the greater 

 part of the bell-cavity. It is joined to the 4 radial-canals by means of 4 wide funnel-shaped 

 ducts. The gonads occupy 8 adradially situated rows which extend about two-thirds of the 

 distance from the inner apex of the bell-cavity to the velar opening. The outer surfaces 

 of the gonads are transversely folded and give rise to numerous papillae. There are 4 well- 



