42 EDWATID T. RROWXE. 



Tlie eight narrow longitutliual musflf l)an(l.s lie close to the interradial septa ; 

 each pair forming nearly parallel hands along the greater length of the umhrcUa, but 

 diverging near the uml)rellar margin to enter the arms. A circular marginal muscle 

 hand, divided into eight segments l»v the arms, is also present. The interradial septa 

 do not extend (juite to the umbrellar margin, and the space left forms an opening 

 which places the gastric pouches in communication with one another. 



The .smaller specimen of the two, about 40 mm. in diamet^jr, is abnormal. It has 

 only .seven arms, six longitudinal bands of gonads, and three septa. Tliis individual 

 probably received an injury, early in life, near one of the interradial septa, and the new 

 growth has not taken the normal course. One arm is smaller than the others, with 

 smaller and fewer tentacles, and this arm is next to where the mi.ssiug arm should be. 

 Here a septum is missing, and it is replaced by a tseuiola, wliich runs along the 

 whole length of the umbrella and is covered along its whole length witli gastric 

 filaments. The two bands of gonads are also missing on the injured .side. 



Lucernaria vanhoeffeni has certain characters in common with L. eampanulata, 

 the well-known British species, which occurs widely in Europe. The lateral adhesive 

 discs on the outer row of tentacles, the absence of muscles in the taeniola; within the 

 peduncle, and the arrangement of the arms on the umbrellar margin, are common to 

 both specie-s. The shape of the peduncle distinguishes L. vanhoeffein from the other 

 species of the genus. 



CORONATA. 

 Family PERIPHYLLIDiE (Haeckel, 1880), Vanhoffen, 1902. 



Genus Pkriphvlla, Steenstrup, 1837. 

 (sens. emen. Vanhotlen, 1892; Maas, 1904.) 



Generic Characters. — Periphyllidfe with four interradial sense organs ; with 12 

 tentacles (three between every two sense organs) ; and with IG marginal lobes. 



Pkriphvlla dodecabostrycha. 



C'hrysaora dodemboslnjiha ?, Hmndt, 183H, p. 387, Tiif. XXIX., fig. 30. 



PeriphijUa iMecahnittrycha* Ilaeckel, \%M, p. 421. 



Periphylla mirahiUs, Haeckd, 1S80, p. 422; id., IS81, p. :-)4, Taf. XVIII.-XXIII. ; /V/., IS82, p. (i4, 



ris. XVIII.-XXIII. 



/'ertphi/llrt dodecabostri/ffui, VanhiifTen, l«'.t2, p. in, Taf. IT., fiir. 1 ; Maas, IK'.IT, Taf. XI., fii,'. 1 ; Mayer, 

 190C, p. 113G, ri. III., fig.s. 5, C. 



In tlie ' Southern Cross ' collection there are five specimens of Periph/Wi , which 

 were found either at the surface or iu less tlian (5 fathoms of water off Cape Adarc in 



* Prof. Haeckel had no authority to write Brandt's name as he did ; Dodccaboilrycha is (see Brandt, p. 887) 

 one of the three Hub-gencra of C h rij tao ni, a.m\ the following is an exact transcript: "3. Art.? Chrytaorii 

 (DodecaboMlrychn ? ) Dubia." — Ed. 



