24 A MONOGRAPH OP THE TERTIARY POLYZOA OF VICTORIA. 



opening upwards and to one side ; no avicularia on tlic lateral zooecia. Posteriorly 

 the two lateral series of zooecia distinct, the median only indicated by a slight 

 separation between the lower parts of the lateral zooecia. 



M.C. 



Ought perhaps to be referred to Cellularia. 



3. 31. crystallina, Busk. 

 Emma crystallina, Busk, B.M.C., Pt. I., p. 28 ; id. C.P., 23 ; Menipea 

 crystallina, McG., P.Z.V., 58. 



Of this well-known recent species I had a single perfect internode from Muddy 

 Creek, but it was unfortunately lost without a figure having been drawn. 



Scrupocellaria, Van Beneden. 



Zoarium articulated, dichotomously branched. Zooecia bi-serial, quadrate, 

 furnished with oval spines ; a sessile avicularium at the upper and outer angle, and 

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



1. S. crenulata, n.sp. PI. III., figs. 4, 5, 6. 



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

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

 by 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, crenulated rim below the contraction ; a small, hammer-shaped scutum 

 (mostly worn off) on a rather long peduncle projecting over the aperture; two 

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

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

 avicularium on the front of the zooecium below the aperture. Zooecia posteriorly 

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

 zooecium, the groove oblique (not transverse). Ooecia globular, adpressed. 



M.C. 



Waters in his papers gives S. scabra, from Muddy Creek and Bird Bock, 

 without figure or description, and possibly the present form is the one meant. It 

 is, however, undoubtedly distinct from the living northern species of which I have 

 excellent specimens from Greenland. 



Caberea, Lamouroux. 



Zoarium continuous or imperfectly jointed, dichotomously branched. Zocecia 

 bi-multiserial, quadrate. Avicularia, when present, sessile on the outer side or 



