lOi KECORDS OV THK AUSTKALIAX MUSEl'xM. 



cliistei'S uf iieniatocysts in addition to a terminal cluster; tlie al).seiice of 

 oral tentacles ; the presence of a tliick nematocyst ring under tlie niargiu 

 of the bell. The gonads are well developed and are partly sepaiated by 

 low ectodermal se|)ta. Crawling Mednsse of this type have hitheito been 

 recorded onlj- fi'om the Falkland Islands, the Cape of Good Hope, 

 Kergueleu Island, and Antarctica. The discovery of a new species on the 

 coast of New South Wales is, therefore, of special interest. The species 

 is a well-marked one, and differs consi(ierably from the previously-described 

 membei's of the genus. It is readily distinguished from C. cJiarcoti, C. 

 Jcergueleneiise, and C. hodysuni, by its nematocyst-clusters, which are oral 

 and aboral in position ; from C. valleiitini by its gonads not being entirely 

 above the stomach ; and from C. ccq^ense by (a) the upper branch of the 

 tentacle being shorter than the lower branch, (h) the radial canals, which 

 are usually eight in number, (c) the shape of the stomach diverticula, 

 which aie narrow, acute-angled pouches, and (<1) the poorly-developed 

 septa between the gonads. 



Key to thp: si>ecies of the gencs ('iiidciieiiin. 



a. Nematocyst-clusters oral and aboral in position. 



b. Gonads entu-ely above stomach.. t'. vallenfiiti (Browne). 



bb. Gonads not entirely above stomach. 



c. Upper bi-anch of tentacle longer than lower branch C. cai)ense, Gilchrist. 



cc. Upper branch of tentacle shorter than lower branch 0. hasiveUi. sp. nov. 



««. Nematocyst-clusters lateral in position. 



i1. Radial canals branched C. rharcoli (Bedot). 



dd. Radial canals not branched. 



e. Complete nematocyst ring C. l^ergnelenense, Gilchrist. 



ee. Incomplete nematocyst ring C. hodgsoni (Browne). 



Litei;atui;e. 



1. Bei'ot, M. — " Sur un Animal polagique de la Ri'gion antarctique." 



Exped. Antarct. Franeai.s^e (1903-5), Charcot, 190b, pp. 1-5. 



2. Browne, E. T. — "A Px*eliminary Report on Hydromedusae from the 



Falkland Islands." Ann. Mag. Nat!' Hist., (7), ix., 1902, 

 pp. 272-284. 



3. Br.owNE, E. T. — " Coelenterata, v. -Medusa^." Nat. Antaict. Mxped. 



(1901-1904), Nat. Hist., v., 1910, pp. \-&l. 



4. CuUK, C. — " Reiserbericht iiber die Tiefsee-Expedition," 1900. 



5. Gti.christ, J. I). F. — " On a Species of the Crawling Medusa, Elentheria, 



fiom the Cape of Good Hope ((.')//</"/"'»/" (•<(//?»>■/.>.•. g. et 

 sp. n.) and the Southern Eleutheripp." (jtiinit. .lonni. .Micrcv. 

 Sci. (n.s.), Ixiii., 4, 1919. pp. 509-529. 



6. Vanuoffen, B. — " Die Anthomedusen und Leptomedusen dei- deiitschen 



Tiefsee-Ex[)odition." Wissen. Ergebnisse der Deut.schen 

 'i'iefsi'e-h]x[)e(lition auf dem Dampfer " Valdivia," Bd., xix., 

 1911, pp. 193-233. 



