MEDT'S.E nF WOODS HOLE REGION, 



63 



Family LICERNARIID.-E. 



KEY TO THE QENEB \. 



A.— Without gastrogenita] pockets in the subumbrellar wall of the radial pouches, 



1. Umbrella with 8 marginal anchors Haliclystu* 



•_'. Umbrella without marginal anchors bitct rnaria 



B.— With t perradial gastrogenital pockets in the subumbrellar wall of the 4 radial pouches. 



3. Margin of umbrella with 8 anchors Halicyathus 



HALICLYSTUS Clark I L863) . 

 Haliclystus auricula Clark. Text rut. . ^OS £|fc§ „. 



Haliclystus auricula Clark, Journal Boston Society Natural History. Vol. VI I r^P* J,e M^^ V ^*> IP/fi^ 



1868, p. 559; A. Agassiz, North American Acalephae, 1865, i>. 63; Lucernariae "Sr^^oA V E/y/ 

 and Their Allies, 1878, ]>. 13, in Smithsonian Contributions to Knowledge, ^2j>\\\ wf 



Vol. XXIII. Haeckel, System der Medusen, 1879, p. 389. 



Haliclystus primula Haeckel, Prodromus Systemae Medusarum, 1877, No. 375. f\ iji'i 



Umbrella octangular to pyramidal, stalk quadrate, approxi- ^ \Y'// *1ta 

 mately as long as the bell height; 8 arms, arranged in pairs; 4 &(&f$^V V\ ^K 

 perradial sinuses, broader and deeper than the 4 interradials, each 

 arm with from 100 t < > 120 tentacles; 8 large marginal anchors. 

 Size, broad diameter, 20-30 mm.; height, including stalk, about 

 tho same. 



Colors. — Variable, often including every tint of the spectrum. 

 Usually, however, the color is simple. 



Distribution. — Massachusetts Bay northward. 



Haliclystus salpinx Clark (1863). 



Haliclystus salpinx Clark, Journal Boston Society Natural History, v., I. VII, 1863, Haliclystus auricula. After A. 



p. 563. A. Agassiz, North American Acalephae, 1865, p. 64. Haeckel, Agassiz. 



System der Medusen, 1879. p. 388. 



Umbrella octangular, stem quadrate to prismatic anil provided with 4 interradial longitudinal 

 muscles. Eight arms symmetrically disposed, each with a tuft of 60-70 tentacles. Marginal anchors 

 very large and about as long as the tentacles. 



Distribution. — Chiefly northeastern Atlantic coast. 



LTJCERNAEIA 0. F. Muller (1776). 

 Lucernaria quadricornis < ). F. Muller. 



Lucernaria quadricornis O. F. Muller, Prodromus Zoolo^ia Daniea, 177c. M. Sars, Fauna Littoralis Norvegiae, 1846. L. 

 Agassiz, Contributions Natural History United States, Vol. IV. p. 175, 1862. Clark, Journal Boston Society 

 Natural History, Vol. VII, 1863, p. 552. A. Agassiz, North American Acalephae, p. 62, 1865. Haeckel, System der 

 Medusen, 1879, p. 390. 



Umbrella flat funnel-shaped to quadrate pyramidal, about twice as broad as high. Stalk cylin- 

 drical, single-chambered, about as long as the bell height and with 4 interradial longitudinal muscles. 

 Eight arms, arranged in pairs; the I perradial sinuses of the bell margin as broad and deep as the 4 

 interradials; each arm with 100 or more tentacles. Diameter of umbrella about 50 mm.; height, 

 including stock, slightly greater. 



Colors. -=-Variable, gray, green, yellowish-brown to reddish. 



Distribution. — About as for Haliclystus. 



