44 



spleen, shaped like the head of an arrow, attached to its 

 beud. These parts are represented in the first woodcut, 

 a little separated, that their form may be better seen. On 

 removing the liver, the intestines come into view, as in the 

 second cut. A thick, dark purple, muscular oesophagus 

 opens into a wide, white, ovate stomach, with a narrow gut 

 passing from the right of its fundus, making a short sig- 

 moid flexure, and entering a wide colon, which is traversed 

 by a spiral valve. An ample rectum completes the canal, 

 and is shown in the cut, suspended by a portion of the 

 mesentery, with a gland close to it. The testes are drawn 

 to the right, that they may be seen, and above them there 

 is a glandular body, composed of large compressed acini, 

 which separate from each other when the containing cap- 

 sule is ruptured. The cuts show the viscera of their 

 proper size, and we have used the terms right and left in 

 reference to their natural position in the fish, with its belly 

 downwards. 



DIMENSIONS. 



Length from the end of the suout to the tip of the tail ... 22-50 inches. 



„ „ first dorsal 8-25 „ 



„ „ anus 6-88 „ 



,. „ ventrals 6-40 „ 



n „ last gill-opening.. 3'50 „ 



„ „ first ditto 2-50 „ 



1. „ pectorals 2-73 „ 



)t „ spiracles 1-50 „ 



eye 1-35 „ 



I) „ mouth 038 „ 



Distance between the anus and tail fin 11-35 „ 



Length of claspers along their interior edges 270 „ 



„ tail fin, two under lobes 3-80 



AcANTHiAS. Miiller and Henle. 



Plate XXVIII., fig. -5. 



This figure is copied from a drawing of a foetal shark by 

 Dr. Hooker, executed on the Australian coast. Miiller 

 and Henle state that the Acanthias vulgaris is an inha- 

 bitant of the southern seas, and that the young are spotted 

 with white. They say nothing, however, of the black 

 patches on the fins, and we have, therefore, introduced the 

 figure, that it may be compared with equally young exam- 

 ples of that species. 



Rynch.\na greyi. Richardson. 



Species nnica adhuc detecta. 



Radii: — Br. 3; D. 3|11 ; A. 21?; C. 19| ; P. 11; V. 9. 

 Plate XXIX., figs. 1, 2, 3, 4, 5, 6. 



We owe this remarkable Cyprinoid to His Excellency 

 Captain George Grey, Lieutenant-Governor of West Aus- 

 tralia, whose exertions in the cause of Zoology have been 

 productive of several important discoveries. One Cypri- 

 noid [Ptycholepis) had been previously detected at the 

 northern extremity of Australia, and the existence of 

 another in the south-western corner of that land, now as- 

 certained, is an important fact in the history of the geo- 

 graphical distribution of fish. Further researches will 

 probably show, that the absence, or even rarity of mem- 



