470 THE AUSTRALIAN HYDROMEDUS.E, 



98. CLADOGRAPSUS FURCATUS. Hall. 

 In the reddish and whitish Llandeilo flag (1.) 



4. SUB-FAMILY. DICRANOGRAPTIN.E. 

 DICRANOGRAPTID^L Lapworth. 

 Hydrosome consists of two, originally dox-sally united axis. Cells 

 overlapping. Exterior part indented. Broad end of the Sicula 

 on the proximal end of the Hydrosome. 



There are no Australian representees of this Sub-family known. 



B. DIPRIONID^E. 

 Cells in two rows, axis central. 



5. SUB-FAMILY. DIPLOGRAPTINiE. 

 DIPLOGRAPTIDJE. Lapworth. 

 Hydrosome consists of two branches, dorsally joined. Sicula 

 imbedded. The broad part forming the proximal end of the 

 Hydrosome. 



17. GENUS. DIPLOGRAPSUS. McCoy. 



Stems simple, straight with a slender central axis ; cells oblique 



in two rows alternating often with two spines near the exterior 



opening. 



99. DIPLOGRAPSUS MUCRONATUS. Hall. 



Very abundant in Llandeilo and Bulla (2.) 



100, DIPLOGRAPSUS PRISTIS. Hisinger. 

 This species is found together with the former, and in other 

 places in Victoria (3.) 



101. DIPLOGRAPSUS RECTANGULARIS. McCoy. 

 This species is found in Llandeilo and Bulla (4.) 



(1.) McCoy. (I.e.), p. 37, pi. XX. 



(2) McCoy. (I.e.), Decade I., p. 20, pi. I. 



(3) McCoy. (I.e.), Decade I., p. 11, pi. I. 



(4) McCoy. (I.e.), Decade I., p. 11, pi. I. 



