42 EDWARD T. BROWNE. 



The eight narrow longitudinal muscle bands lie close to the interradial septa ; 

 each pair forming nearly parallel bands along the greater length of the umbrella, but 

 diverging near the umbrellar margin to enter the arms. A circular marginal muscle 

 band, divided into eight segments by the arms, is also present. The interradial septa 

 do not extend quite 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 diameter, is abnormal. It has 

 only seven arms, six longitudinal bands of gonads, and three septa. This 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 missing arm should be. 

 Here a septum is missing, and it is replaced by a tseniola, which runs along the 

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

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



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

 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 tseniolse within the 

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

 both species. The shape of the peduncle distinguishes L. vanhoeffeni from the other 

 species of the genus. 



CORONATA. 

 FAMILY PERIPHYLLID^E (Haeckel, 1880), Vauhoffen, 1902. 



Genus PERIPHYLLA, Steenstrup, 1837. 

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



Generic Characters. Periphyllidse with four interradial sense organs ; with 12 

 tentacles (three between every two sense organs) ; and with 16 marginal lobes. 



PERIPHYLLA DODECABOSTRYCHA. 



Cliri/saora dodecalostnjcha ?, Brandt, 1838, p. 387, Taf. XXIX., fig. 30. 



Periplnjlla dodecabostrycha,* Haeckel, 1880, p. 421. 



Periphylla miralilis, Haeckel, 1880, p. 422 ; id., 1881, p. 54, Taf. XVIII.-XXIII. ; -id., 1882, p. G4, 



Pis. XVIII.-XXIII. 

 /'eriphi/Un doderabostrycha, Vanhoffen, 18!2, p. 10, Taf. II., fig. 1 ; Maas, 18H7, Taf. XI., fig. 1 ; Mayer, 



1'JOG, p. 113G, I'l. III., figs. 5, 6. 



In the ' Southern Cross ' collection there are five specimens of Periphylla, which 

 were found either at the surface or in less than 6 fathoms of water off Cape Adarc in 



* Prof. Haeckel had no authority to write Brandt's name as he did; Dodecabostrycha is (see Brandt, p. 387) 

 one of the three sub-genera of Chrysaora, and the following is an exact transcript : " 3. Art. ? Chrysaont 

 (Dodecabostrycha ?) Dulia." ED. 



