356 APPENDIX. 



2. C. amphora, n. sp. 



Cellaria catenulata ? var. B. Lamarck. Anim. sans Vert. 

 Vol. ii. p. 180, (2nd ed.). 



Cells oval, sides rendered straight upwards by tlie 

 broad a^dcularia wbicb are prolonged upwards into an 

 acute spinous angle, and support a shallow cup. Front of 

 cell with nine pyriform fenestrse, with fissures proceeding 

 from tlieir pointed ends towards an oval central perfora- 

 tion. An elevated band, extending from the sides of the 

 mouth to the upper angular processes of the avicularia. 

 An elevated flattened band along the middle of the back, 

 which at the top sends off a narrower lateral band to each 

 avicularian spine. 



Hab. — Bass Strait, 45 fathoms. 



A fine species of a bright reddish brown, and in the 

 younger cells very transparent. Forms small, irregularly 

 branched bushes, four to six inches high and wide. It is 

 pecuhar by its extremely regular vase-like form of cell, 

 which is given by the continuation upwards of the broad 

 avicularia in nearly a straight line, and their prolongation 

 into a sharp angular spine, on the inner side of which is 

 a shallow cube-hke cavity, whose sides are usually more 

 horny than calcareous. The number of fenestrse appears 

 to be very constant. 



The length of the branches before their dividing, and 

 their straightness, together with the colour of this species, 

 render it not improbable that it is the form intended by 

 Lamarck, (1. c). 



3. C. margaritacea , n. sp . 

 Cellaria vesiculosa ? Lamarck. 



Cells oval or sub-globular, much compressed ; avicularia 

 short and broad, supporting a deep cup-like cavity. 

 Fenestrse 5, large. Lower margin of mouth notched in 

 the middle ; back of cell minutely sulcated ; sulci short, 

 interrupted, and irregular. A small lateral " area." 



