184 DR. RICHARDSON'S DESCRIPTION OF AUSTRALIAN FISH. 



Dimensions. 



In. Liu. 



Length from mouth to tip of tail 7 9 



Length from mouth to end of dorsal 4 5 



Length from mouth to anus 3 7 



Length from mouth to beginning of dorsal 2 7J 



Length from mouth to pectorals 1 3^ 



Length from mouth to gill-openings 1 2^ 



Length from mouth to centre of eye 8 J 



Length of dorsal 19 



Breadth of body at fore-part of dorsal 4J 



Height there 2 



EXPLANATION OF THE PLATES (Part 2.). 



PLATE VIL 

 Fig. 1. HoPLEGNATHUs CoNWAYii, (Rich.), one third of the natural size. 

 1 a. Side view of the jaws, natural size. 



1 h. Front view of ditto ditto. 



Fig. 2. Syngnathus aegus (Rich.), natural size. 



2 a. Vertical section of ditto. 



PLATE VHL 



Fig. 1. Lepidoleprus australis (Rich.), half the natural size. 

 1 I. Vertical section of ditto. 

 1 e. Scale from the cheek of ditto, magnified. 

 1 d. Scale from the lateral line of ditto, magnified. 

 Fig. 2 a. Scale from the head of Lepidoleprus ccelorrhynchus (taken from 

 Mr. Lowe's Madeira specimen in the Zoological Society's Museum), 

 magnified. 

 2 h. Scale from the lateral line of the same specimen. 

 Fig. 3. Scale from the body of Lepidoleprus trachyrhynchus (taken from a 

 dried specimen in the Zoological Society's Museum), magnified. 



PLATE IX. 

 Fig. 1. (young), Fig. 2. (old). Ostracion auritus (Shaw), natural size. 

 1 a. Vertical section of young specimen. 

 1 b. Ditto of old. 



