24 A MONOGRAl'II OF THE TEllTIAKV TOLVZOA OF VICTORIA. 



oponiiii;- upwards niul to one sido ; no avicularia on (lie lateral zoircia. i'oistci-iorly 

 the two lalLM-al scries ol' zoa-cia distinct, the median only indicated by a slight 

 separation between the low'cr parts of the lateral zodecia. 



:\LC. 



(JnL^iit perhaps (o be referred to Cellularia. 



3. 3/. cjyslallina, Eiisk. 

 Edidki crys(allina, liusk, B.M.C., Pt. 1., \). 2S ; bl. C.P., 23; Jfeuijjea 

 cryatallina, McG., P.Z.V., 58. 



Of this well-known recent species I iiad a single perfect internode from ]\Iuddy 

 Creek, but it was unfortunately lost without a ligure having been di'awn. 



Senipocellaria, Fan Benedeu. 



Zoarium articulated, dichotonionsly branched. Zod'cia bi-serial, (juadrate, 

 furnished with oval spines; a sessile aviculariuni at tin; u|)per and outer angle, and 

 a vibraculum in a sinus on the outer and lower part behind. 



1. .S'. eremilata, n.sp. PI. TTT., figs. 4, 5, G. 



Zoojcia six or more in an internode, elongated, lower part smooth ; aperture 

 occupying from a third to a half of the front, contracted at the ujiper fourth 

 ])y an eminence for the articulation of the scutum on the inner side, and a 

 thickening on the outer side (for attachment of a spine ?) ; margin with narrow, 

 thickened, crcnulated rim below the contraction ; a snuill, hammer-shaped scutum 

 (mostly worn cjif) on a rather long peduncle projecting over the aperture; tw'o 

 spines at the outer angle and one at the inner above the attachment of the scutum ; 

 lateral avicularia large, witli pointed, upturned mucro; a considerable sessile 

 aviculariuni on the front of the zotecium Ijelow the aperture. Zoan-ia ])osteriorly 

 smooth ; vihraeular cells pyriform, lower part occupying the whole width of the 

 zocecium, tiie groove oblique (not transverse). Ocjucia globular, adpressed. 



M.C. 



Waters in his pa))ers gives S. sc((bi-a, from Muddy Creek and Bird liock, 

 without ligure or description, and i)ossibly (he present form is the one meant. It 

 is, however, undoubtedly distinct from (Ik- living northern species of which 1 have 

 excellent .specimens from Greenland. 



Caberea, Lainoarun.v. 



Zoarium continuous or imperfectly jointed, dichot.omously branched. Zoiccia 

 bi-nudtiseriul, (juadrate. Avicularia, wdien present, sessile on the outer side or 



