STAUROMEDUS^: KISHINOUV 1. A , II \ I.ICI.VSTUS. 531 



Wide ring muscle at margin of subumbrella and 8 strands of radial-muscles extending 

 outward to the tentacles. These radial strands are one-third wider than the ring muscle. 

 They inclose 4 narrow, triangular areas in the interradii and 4 wider, rectangular spaces in 

 the perradii. These subumbrclla areas between the muscle strands exhibit many large nettle- 

 cells. There are about 12 simple, unhranched, gastric filaments in each ot the 8 rows. Found 

 at Gauss Station. Kaiser \Vilhelm II Land, Antarctic Continent, at a depth of 192 fathoms, 

 in November, 1902. 



Genus KISHINOUYEA, nom. nov. 



SchizoJiscus, preoccupied by Kittl, 1891. 



Schizodiscus, Ki-iir.mit, 11)02, Jour. College Sci., Tokyo, vol. 17, art. 7, p. 5. 



The type species is K , nagatfnsis of Japan, first described hv Oka under the name Lnccr- 

 iniiiii naatitcnsis. 



GENERIC CHARACTERS. 



Stauromedusae with 4-chambered stomach as in the Eleutherocarpidae, and without adhe- 

 sive anchors. Umbrella deeply notched, with 8 adradial lobes. 8 adradial clusters of 

 knobbed tentacles. Peduncle 4-chambered without muscle-fibers in the txniola. Gonads 

 8 adradial hands of laterally oblong sacs. 



This genus is very closely allied to Lucc-rnaria and is distinguished only by its 4-cbambered 

 aboral stalk. In young medusa;, however, it is single-chambered, as in Lucernana, but the 

 4 interradial septa, or txniola, unite near the pvloric region as growth proceeds, and thus the 

 peduncle comes to have 4 perradial, separate chambers. 



Kishinouyea nagatensis. 



Lucernaria nagaiensis, OKA, 1897, Zool. Mag. Tokyo, vol. 9, p. 67, plate i. Also; Annul, /mil. J.ippon. Tokyo, vol. 1, p. 141, 



4 fi S s - 

 Schifttdisctti nagatensis, KIMIIMII j \t, 1902, Journ. Science College, Tokyo, vol. 17, art. 7, p. 6, plate i, figs. 3-6. 



The 8 adradial lobes are united in pairs, so that the 4 perradial notches are about twice 



as deep as the 4 interradial. These 

 8 adradial lobes are bent at right 

 angles to the oral side. The disk 

 has the shape ot a Greek cross. 

 Peduncle 4-chambered in adult. 

 Well-developed, interradial, longi- 

 tudinal muscles in the subumbrella. 

 Marginal muscle divided into 8 U- 

 shaped pieces. No primary tenta- 

 cles. Adradial tentacles short, adhe- 



I'l.;. 538. Kishinouyea na K aicn,i,, afi.-r Kishinouye, sive, in clusters of 5. Gastral tila- 



in Jour. Col. of Science, Tokyo. i i ,- ' 



ments branched, tew in number. 



Gonads, 8 broad, adradial bands ot laterally oblong sacs. Color variable, matching its 

 surroundings. Japan. 



Genus HALICLYSTTJS Clark, 1863. 



Haliclyslus, CLARK, 1863, Journ. Boston Soc. N'.it. Hi t., vol. 7, p. 559; 1878, Smithsonian Contributions to Knowledge, Article 

 2, Part. 2. AGABSIZ, A., 1865, North Amer. Acal., p. 63. HAECKEL, 1880, Syst.dcr Medusen, p. 387. KISIIINOUYE, 



1889, Proc. U. S. National Museum, vl. >:.]>]'. i:;. i:-i. M VAS, 1904, Re'sult Camp. Sci. Prim > . ; . M n.tco, fasc. 28, 

 p. 43; 1906, Fauna Arctica, Bd. 4, Lfg. 3, p. 499. Gross, 1900, Jena. Zeit. fur Natunvissen, Bd. 33, p. 614 (anatomy). 

 Lucernaria, BfRt.u, 1888, Vidcnsk. Meddtl. Xaturhist. l'<ir. Kjobenliavn, p. 214 (embryology). 



The type species of this genus is H. auricula from the Atlantic coasts of Europe and of 

 New England, United States. 



GENERIC CHARACTERS. 



Stauromedusae similar to Lucernaria but with 8 perradial and interradial marginal 

 anchors, and with a 4-chambered, aboral peduncle. The embryology has been studied by 

 Bergh, 1888, and is similar to that of Lucernaria, excepting that in Lucernaria the 8 anchors 

 become lost as growth proceeds. 



