Aiistralldii Hijih-ohls. 87 



PjukUhI t(. its utmost limit, and siic-Ii a one presents a strong re- 

 semblance to the specimens before us. Possibly the treatment to- 

 which tliev have been submitted may liave caused them to become 

 fixed in an unusually widely expanded attitude, and may in part 

 account for the eliaracteristic form. I have, however, some speci- 

 mens of a New Zealand species, in which the condition is similar, 

 and Hartlaub's ligui-e of Eucopella reticulata gives a distinct indi- 

 cation of the annular band. An allied species, described by Mulder 

 and Trebilcock as Eucopella undulata (Geelong Naturalist, May, 

 1914), also appears to have the same structiire. ^ 



Unfortunately, the specimens, probably from the action of a 

 reagent, are excessively dark and opaque, so that I was unable to- 

 ascertain tlie structure satisfactorily, especially the condition of the 

 oral i-egion. In some cases there seemed to be a dome-like eleva- 

 tion in the middle of the calyx, in others it was not apparent. The 

 annulus lies flat, and tlie tentacles spring horizontally from below 

 it. and are mostly recurved. In one or two cases they were curled 

 inwards over the annulus, which was not at all retracted. As in 

 manv ("ampanularians a biserial arrangement of the tentacles is. 

 indicated by their occasional alternate elevation and depression. 



The gonothecae are, as Hartlaub says of those of Exicopella 

 reticulata, " ham-shaped," rounded at the top when mature, and 

 without distinct operculum. In Von Lendenfeld's specimens some 

 of them contained the gonophores, which were so blackened that 

 theii' structure could not be made out. One of my Bondi speci- 

 mens included gonophores in various stages, some of the gonothecae 

 V)eing closely packed with the developing ova. In most cases there 

 were two gonophores. The perisarc of the gonotheca is thicker 

 towards the base, often excessively so. Hartlaub describes the gono- 

 theca of E. reticulata as passing into the peduncle gradually, and 

 without distinct constriction or interruption. While none of my 

 specimens quite agree with this, some of them are but slightly con- 

 tiacted at the base; in others, however, the contraction is extremely 

 abriipt. I cannot attach much importance to this character, as the 

 specimens vary greatly in regard to it; moreover, the position in 

 which the gonothecae are viewed has much to do with their apparent 

 foi'm. as they are commonly more or less bent at the base, and de- 

 cumbent. 



1 In both the species referred to the lateral inflation of the h.vdranth is evident, as also is the 

 position of the upper portion, that is, leaninj; over the upper lip of the h.vdrotheca, and Mulder 

 and Trebilcock say that is the custoinar.v attitude durinj,' life. In all the species the iLfreatest diameter 

 is across the annular band. y 



