SUPKAKEjNAL BODIES IN FISHES. 61 



8 mm. from the hinder end of the kidney on its spinal surface, and was about 1 mm. 

 in diameter. 



Gastrosteus spinachia was too small for anything to be seen with certainty. 



In a specimen of Labrax lupus 70 cm. in length, with a kidney of 30 cm., I found 

 two suprarenals placed one immediately behind the other on the spinal surface. The 

 anterior one is 5 mm. by 1\ mm. ; the posterior one is about half the size of the anterior. 



Mullid^e. — Two specimens of Mullus barbatus (PI. XII. figs. 30 & 30 a) have 

 been examined. In one, 24 cm. long, there were three suprarenals present; in the 

 other, 42 cm. long, there were five. 



In the first specimen these were crowded together in the middle line on the spinal 

 surface about 3-25 cm. from the hinder end of the kidney (PL XII. fig. 30, s.r.). 



In the second one (PI. XII. fig. 30a) there were two "chief" bodies, right and left, 

 situated a few mm. behind the hinder end of the kidney, attached to the kidney and 

 to the intestine and body-wall by fibrous strands. The left one has an " accessory " 

 body just behind it, and there are two small ones on the ventral surface of the left tail 

 of the kidney (PL XII. fig. 30 a, s.r.). The right chief body is 4 mm. by 3 in 

 diameter, the left 3 by 2. 



It is interesting to note, in relation with the abundance of suprarenal tissue, that 

 this fish is of a red colour, and has an intensely pigmented, almost black, peritoneum. 



Sparid^. — In the common Sea-Bream (Pagellus centrodontus) I have found two 

 suprarenals, 2 mm. in diameter, and very pale pink in colour, situated 1 cm. from the 

 hinder end of the kidney on its spinal surface (PL XII. fig. 31). In Cantharus 

 griseus almost exactly the same arrangement was found. 



TrigliDzE. — In this family I have examined Cottus gobio (PL XII. fig. 32), Trigla 

 pini (PL XII. fig. 33), and T. lyra (PL XII. fig. 34). The rule as to number is the 

 same as in Teleosts generally, i. <?., that there are two ; but in one specimen of Trigla 

 pini I have found one only, in the middle line, on the spinal surface, about 8 mm. 

 from the hinder end of the kidney. 



Their shape is rounded, and their position as a rule bi-lateral ; but in Trigla lyra I 

 have found two, placed one behind the other, both to the left of the left edge of the 

 kidney near its hinder extremity (PL XII. fig. 34, s.r.). 



Except in this one example of T. lyra I have always found them on the spinal 

 surface of the kidney in this family. 



They are of a very pale pink colour, and are free on the surface of the kidney, 

 sometimes attached to the body-wall by bands of fibrous tissue. In size they vary 

 between 1 and 2 mm. 



Scombrid^e. — In this family I have been able to examine Scomber scomber and Zeus 

 faber (PL XII. figs. 35 & 36). 



In the Mackerel (PL XII. fig. 35) I have found the suprarenal bodies on the 

 ventral aspect of the kidney, about 4'5 cm. from its posterior extremity, almost 



