Tertiary Folyzoa of Victoria. 5 



This much resembles C. dentiadata, but is smaller ; the zooecia 

 are of a diflferent shape and do not encroach on one another 

 longitudinally, as in that species. The structure of the opening 

 below the thyrostorae is not exactly the same. In this species 

 the margin of the opening is continuous, and the plate, projecting 

 over it, is united to under side of the lower part ; in C. dentiadata 

 it is on a level, and is continuous with the front wall, the open 

 spaces being quite distinct, whereas in this species the opening 

 shows as a single one with a bar or plate, which does not 

 interrupt the margin. The ooecium also is very different from 

 that of C. dentiailata, as figured by Dr. MacGillivray in P.Z.V., 

 pi. 48. 



Thalamopopella posieri {Audouin.) form longirostpata, 

 no v. (PI. II., Fig. 14). 



Zoarium bilaminate. Zooecia in linear series, oblong with 

 distal end rounded ; margins raised ; no " tubercles " near the 

 opesia, which is suborbicular ; two lai'ge foramina below the 

 opesia; the proximal part of the intervening cell-wall depressed 

 below the level of the front of the zooecia. Avicularian cell 

 very long, mandibular cavity long and pointing distally. 



Locality. — Jimmy's Point, Gippsland Lakes (J. Dennant). 



This differs from the four varieties of T. rosieri, described by 

 Mr. Hincks in A.M.N.H., ser. 5, vol. YI., p. 379, where he sums 

 up their distinctive features as follows : — 



" 1. Normal form, with marginal tuberosities and large 

 bilobate ooecium ; avicularia none. 



2. Form goihica. With marginal tuberosities, destitute 



of ooecia ; avicularia large, with triangular man- 

 dible. Mazatlan and California. 



3. Form indica. Without tuberosities ; avicularia large, 



with somewhat elongated slender pointed man- 

 dible. Large bilobate ooecium. India. 



4. Form fakifera. With marginal tuberosities ; avicu- 



laria large, with much elongated tapering falci- 

 form mandible. Ooecium (?). Australia." 

 The form I now describe differs from the normal in having 

 avicularia and no tuberosities ; it is near form " Indica,^'' with 

 which it agrees in having no perceptible " tuberosities," and has 



