ANARRHICAS LUPUS. 409 



number of caeca, as it were, united into one mass. The duct of the 

 liver opens in the notch or angle that the pylorus makes with the duo- 

 denum, and the opening of the pancreas. 



The ovaria lay along the back on each side of the ducts passing down 

 to the anus, at whose verge they open. 



There is no urinary bladder. 



The sturgeon has fat about the head, muscles, <fcc. or interstices of 

 parts, which is very yellow 1 . From the gills pass up two holes [spiracles] 

 to the upper surface of the head. In the head there is a crust of bone 

 covering the cartilage. There is fat in the muscles about the gills ; 

 those muscles are red ; therefore the red blood is pushed further than in 

 other parts. The coats of the intestines are very thick. The muscles 

 about the head are proportioned in length to the quantity of motion 

 wanted in the parts. The fasciculi are very much detached. I have 

 found no bones of fish in the stomach of the sturgeon. The stomach 

 appears like a gut. Is not the sturgeon nearest to the shark of any 

 other fish? both from the spiral valve in the intestine, as also the 

 opening on the upper part of the head with the gills? 2 . 



[Order Acanthopteri.] 



The Frog- or Devil-Fish \_Lophius piscatorius, Linn. 3 ]. 



This fish has a large round stomach, with the oesophagus nearly as 

 large ; short intestines ; two large caeca at the pylorus ; and a valve 

 near the anus. The liver passes from right to left, not down the sides 

 in two lobes as in the shark. The gall-bladder lies upon the lower and 

 fore part of the stomach. There are two hepatic ducts, which pass 

 from the liver towards the duodenum, and both enter a cyst or bag at 

 the duodenum, from which goes out the cystic duct to the bladder. 



The Wolf- or Cat-fish \_Anarrhicas Lupus, Linn. 4 ] . 

 The wolf-fish is so called, most probably, from the tusks. It has 



1 [Hunt. Prep. Physiol. Series, No. 1809.] 



2 [The sturgeon is one of the few living representatives of a vast order of extinct 

 fishes, showing, in the main, the aflinity suspected by Hunter; but with distinct 

 ordinal characters. The heart, with the numerous rows of valves in the bulbus 

 arteriosus, is shown in Nos. 707, 908.] 



3 [Parts of the skeleton of this fish are preserved in the Hunterian Qsteol. Series, 

 Nos. 310, 313—316, 319—324. A portion of the jaw with teeth and their elastic 

 ligaments forms the Prep. No. 381, Hunt. Phys. Series: the heart is No. 904; the 

 ovarium No. 3218.] 



4 Parts of the skeleton of this fish are preserved in the Hunterian Osteol. Series, 

 Nos. 301, 303—306, 308.] 



