TRACHYMEDUS.E — LIRIOPE. 



419 



specimen described by Haeckel. There are 8 small, inclosed lithocysts, 4 radial and 4 inter- 

 radial, each with a single spherical concretion. Velum well developed. The peduncle is about 

 as long as bell-diameter and tapers gradually. There is a long, pointed tongue in the throat. 

 There are 4 lips. The 4 radial-canals are wide and smooth-edged and the circular vessel gives 

 rise to 12 blindly ending centripetal vessels, 3 in each quadrant. These are all of equal length, 

 but the interradial vessel of each quadrant is straight, while the ends of the two vessels flank- 

 ing it bend inward toward the interradial vessel. The 4 gonads are wide and maple-leaf- 

 shaped. This species was described by Haeckel from preserved specimens found in the 



272. 



Fig. 271. — Liriope " compacta" after Maas in Ergeb. Siboga Exped., Monog. 10. 

 Fig. 272. — Liriope " liitkenii," after Haeckel. 



neighborhood of the Azores and further westward between 30 to 40 N. lat., and 15 to 45 

 W. long. It seems not improbable that the very remarkable angles shown by Haeckel in the 

 gonads may be due to contraction caused by the preservative fluids. Haeckel is the only 

 naturalist who has seen this medusa, and I believe it is actually L. tetraphylla. 



Liriope conirostris Haeckel. 



Plate 51, fig. 2. 



Liriope scutigera, Agassiz, A., 1865, North American Acal., p. 60, fig. 87. 

 Non Liriope scutigera, McCrady, 1857, Gymn. Charleston Harbor, p. 106. 

 Liriope conirostris, Haeckel, 1879, Syst. der Medusen, p. 291. 



See synoptic table of species of Liriope. 



This species is distinguished by its narrow, elongate, shield-shaped gonads, pointed at 

 both ends. The space beween the gonads is considerably wider than the width of the gonads 

 themselves. The gonads are situated upon the outer halves of the subumbrella lengths of the 

 radial-canals and their outer points touch the ring-canal. Peduncle also characteristic, very 

 narrow, conical, and about as long as bell-diameter; apparently only one short centripetal 

 vessel in each quadrant. Bell about 15 mm. wide, higher than a hemisphere, thick-walled. 

 Gonads and stomach green, lips pink. Found from Chesapeake Bay to the coast of Florida, 

 United States. 



