OF NEW SOUTH WALES. 329 



Fig. 2 (pi. 22). — Ventral surface of the same (from a photo- 

 grapli). At this age, the male copulatory organs are shorter 

 than the lower border of the ventral fin. 



Anal fin. 



Fig. 6 (pi. 28). — Lateral view of the same. The figure only 

 shews the external contour, in addition to the marking. The undu- 

 lating contour-line is meant to represent the extent of the rougher 

 parts of the skin, covered with large and prominent bony plates 

 (scutellce). The anal fin, whose position and length are accurately 

 rendered, has its form rather too diagrammatically represented 

 in the figure, which does not shew that the fin has become some- 

 what shrivelled by the drying, which took place while the 

 drawing was being executed. 



Fig. 6 (pi. 23). — A very miserable rendering of a photograph 

 of the head /rom&e/ore. The outlines, however, are correct. 



Fig. 7. (pi. 23). — Head of the same animal viewed from before, 

 and to some extent from below. From a photograph, about three 

 times the natural size. Scale applicable only for the anterior 

 part of the mouth (the anterior teeth for instance). 



Figs. 3, 4, 8 (pi. 23).— Full-grown* B. PhilUpi, of about 795 

 mm. (31*4 in.) in length. The sketches are from a specimen in 

 the Macleay-Museum, which had been preserved in spirit for a 

 moderate period (2-3 monthsf), to which circumstance is also to 

 be attributed the stiffness of fig. 8. The marking characteristic 

 of the species, however, I have represented as seen in perfectly 

 fresh specimens, since it becomes indistinct only a few hours 

 after death. 



Fig. 3 (pi. 22). — View of the dorsal surface. The dorsal fins are 

 somewhat bent to one side. The eyes are not to be seen, when 

 the head is viewed from above, on account of the overhanging 

 eyebrows (vide. fig. 9). 



• The largest specimen I have seen in Sydney was a female of about 1,232 mm. 

 (48"5 in.) in length. As the specimen was a dried and stuffed one (by which means the 

 shape of the head is considerably altered), its length in the fresh state was probably 

 greater. From the external point of the one fin to that of the other it measured 602 mm. 

 (which number also is to be regarded as only approximate). 



t I received the first fresh specimen of H. PhilUpi on the twentieth day after my 

 arrival in Sydney ; but could make drawings much earlier from specimens preserved in 

 in spirit in the Macleay Museum. As the proportions of the different parts of the body 

 as well as the form of the fins are not much altered by the action of alcohol for a 

 moderate time on the specimen, I found it unnecessary to waste time in making any 

 fresh drawings. 



