716 MEDUSA OF THE WORLD. 



Cannostomites multicirrata Maas. 

 Cannanomites multicirraia, Maas, 1902, Palaontographica, vol. 48, p. 303, taf. 23, fig. I, text-fig. 



This is a fossil from the Jurassic lithographic slates of Bavaria. A single specimen was 

 studied bv Maas. It may possibly be allied to Atolla. Onl\- the subumbrella is known. Hell 

 about 100 mm. wide. An open, central mouth with 4 perradial, gelatinous columns. Sub- 

 umbrella simple with 4 interradial sickle-shaped, notched, and swollen gonads. Marginal 

 ring-muscle entire and powerfully developed as in Atolla. Numerous marginal lappets of 

 varying sizes arranged in multiples of 4. Short, simple tapering tentacles arise from notches 

 between the lappets. 



AtoUites minor and AtoUites zitteli Maas. 



Jlolliiet minor and A. ziilrli, Maas, 1902, Palaontographica, Bd. 48, p. 319, taf. 23, fign. 5 und 6. 



These fossils are from the lower chalk of Carpathia from the Warnsdorf strata. There 

 are more than 10 marginal lappets in high relief, quite variable in size and number. A small, 

 plain center of the exumbrella and an intermediate zone with raised streaks radiating out- 

 wardly. The medusa; ma)' be allied to /holla. They are well figured b}- Maas. 



Acraspedites antiquus Haeckel. 



MeJuiiles aniiijuus, Haeckel, 1865, Zeit. fiir wissco. Zool., Bd. 15, p. 509, taf. 39, fig. 2. 



Acrasptdite! aniiquus, Haeckel, 1869, Zcit. fiir wissen.Zool., Bd. 19, p. 559; 1880, Sjst. dcr Mcduscn, p. 647. — von .•Vmmon, 18S6, 



Abliandl. Math.-phys. Classc KcJnigl. bayer. Akad. Wissen., Bd. 15, p. 157. — Walcott, 1898, Monographs U.S. Gcol. 



Sunr., vol. 30, p. 75, plate 44, fig. 2. 



This is the vague impression of a medusa in the Jurassic white coral limestone, litho- 

 graphic slate of Eichstadt, Bavaria. It is about 140 mm. in diameter and appears 10 have 8 

 marginal lobes. The sculpturing of the bell may place it among the Coronatae, but Haeckel 

 is inclined to classify it with the Pelagidse. 



Semaeostomites zitteli Haeckel. 



Semaeoilomiits zititli, Haeckel, 1874, Jena. Zeitsch. fiir Naturw., Bd. 8, p. 323, taf. 11; 1880, Syst. dcr Mcdusen, p.647. — von 

 Ammon, 1886, Abhandlung Math.-phys. Classe Kiinigl. bayerischen Akad. Wissen., Bd. 15, p. 157. — Walcott, 1898, 

 Monographs U. S. Geol. Surv., vol. 30, p. 70, pi. 39, teit-fig. 17. 



This semaeosromous medusa is found fossil in the Jurassic lithographic slate of Solenhofen, 

 Bavaria. According to Haeckel the disk is 80 mm. wide, mouth with 4 lips each about 80 nmi. 

 long and lo mm. wide. Central stomach crucifonn. 4 interradial, elliptical, genital pouches 

 each 8 to 10 mm. wide. 16 unbranched (?) radial-canals, 4 perradial, 4 interradial, and 8 

 adradial. A ring-canal at some distance inward from the margin. 120 to 128 marginal lappets, 

 and an equal number of tentacles each about 30 mm. long. This medusa is apparenth one 

 of the Ulmaridae allied to Discomedusa. 



Eulitbota fasciculata Haeckel. 



Euliihola fasciculata, Haeckel, 1869, Zeit. fiir wissen. Zool., Ed. 19, p. 549, taf. 42, fign. i, 2; 1S80, Syst. der Mcdusen, p. 647. — 

 VON .Ammon, 1886, Abhandl. .Math.-phys. Classe Kiinigl. bayer. Akad. Wissen., Bd. 15, p. 157.— Walcott, 1898, Mono- 

 graphs U. S. Geol. Surv., vol. 30, p. 73, plate 45, figs. 3, 4. 



This is a fossil medusa from the Jurassic htliographic slate ol Sokiihoten, Bavaria. 



16 marginal lappets. 8 clusters, each composed ot at least 4 tentacles, which arise from 

 8 perradial and interradial ( .') thickened pads between the lappets. These pads may represent 

 the 8 rhopalia. l6 crescentic gonads around the stomach-margin. 16 interlobular radial- 

 canals. 4 ( ? ) simple, short lips. The affinities of this medusa are uncertain but its nearest 

 living ally appears to be Sthciioiila or Poralia. 



Myogramma speciosum Maas. 



Myogramma iptcioium, Maas, 1902, Palaontographica, Bd. 48, p. 298, tafn. 22, 23.— \on Ammon, 1908, Geonostischcn Jahres- 

 heften, Jahrg. 19, p. 174, fign. 2, 3. 



This fossil is from the lithographic slate of Solenhofen. Discomedusx with flatl\ rounded 

 bell. 4-rayed in the organization of the central stomach. 8-rayed at the bell-margin. In the 



