Suprarenals | Pronephros 
Present in Myxine and Bdellostoma, 
absent in Petromyzon. 
| Cortex | Medulla 
Cyclostomata, 
Possibly degenerate !) 
Elasmobran-| Interrenal Absent in adult. 
ehii 
Paired supra- 
renals 
Holocephala do. | do. | do. 
Ganoidei Suprarenals in| Apparently 
Lymphatic. 
kidney | absent | 
Lymphatic (except in Lophius, Dac- 
tylopterus, Fierasper, Ortha- 
goriscus, Mora, and the Ma- 
| eruridae)?). 
Absent in adult. 
Teleostei Suprarenals on| do. 
kidney 
No 'suprarenals as yet de- 
seribed. Perirenal large- 
celled adenoid tissue ?). 
Dipnoi rie 
It is also stated in this paper that I dissent from the views of 
GROSGLIK. 
Returning to the recent work by DiıAmARE I find in his intro- 
duction allusions to the attempts made by modern authors to find a 
suprarenal capsule in the head-kidney of Teleosts, and lamenting the 
modern neglect of the proper Teleostean suprarenals. “Quanto ai 
piccoli corpi del rene dei teleostei, scoperti da Srannius, dopo le 
osservazioni di Ecker, salvo qualche vago accenno in lavori di con- 
temporanei di quest’ ultimo, sono stati completamente dimenticati, ed 
invece i moderni sono andati errando, in cerca di qualche equivalente 
della capsula surrenale o dell’ organo interrenale nei teleostei, ora, 
ritenendo come tale la massa anteriore del rene (Kopfniere), ora, 
intra-vedendolo in formazioni embrionali il cui destino é ben diverso.” 
With regard to WELDON’s theory DIAMARE says that it has been proved 
to be without foundation, and the same applies to that of GROSGLIK. 
It will be seen from the quotations given above how these views co- 
incide with my own. 
The conclusions of the Italian zoologist are as follows: — 
I. La struttura dell’ organo interrenale degli elasmobranchi sche- 
maticamente pud ridursi ad un insieme di otricoli o cordoni (vescicole 
auct.) pieni di elementi epiteliali con protoplasma granuloso, rinchiusi 
in una capsula connettivale (dalla quale dipende un irregolare stroma 
1) Prrtrr (loc. cit., p. 85 u. 86) differs from us in finding Eckkr’s 
body to be glandular. He is doubtful whether this really corresponds to 
suprarenal, 
2) Vincent, Proc. Birm. Nat. Hist. and Phil. Soc., 1896, V. 10 
p. 1—26. 2 Pl. Ser frotuste, p. 1. 
