151 



5) Auch bei Hylonomus sind die unteren Bogen, welche Cred- 

 NER selbst deutlich in seiner Mitteilung über diese Gattung beschrieben 

 und abgebildet hat, intervertebral (Zeitschr. der Deutsch, geol. Ges., 

 1885, p. 128, Taf. XXIX, Fig. 10 und 17). 



Es unterliegt deshalb gar keinem Zweifel, dass 

 Hylonomus und Petrobates Reptilien sind. 



Nachdruck verboten. 



Oll the Suprarenal Capsules and the Lymphoid Tissue 

 of Teleostean Fishes. 



By Swale Vincent, 



In the "Comptes Rendus" for this year, No. 25 (Stance du Lundi, 

 21 Juin) I notice a communication by M. E. Huot entitled "Sur les 

 capsules surrenales, les reins, le tissu lymphoide des Poissons lopho- 

 branches". In this note the Author states that "la structure du corps 

 interr6nal est la meme que celle des capsules surrenales des Poissons 

 lophobranches. Les corps pairs suprar^naux difierent d'autre part de 

 ces memes capsules surrenales et n'ont en outre que des relations de 

 contiguity avec les ganglions sympathiques". Again he affirms that 

 the lymphoid tissue "n'est comparable ni au corps interr^nal ni aux 

 corps suprar6naux des Elasmobranches". 



All this is certainly interesting as applied to the Lophobrauchs, 

 but is not surprising, when one considers that the same facts have 

 already been well made out for Teleosts generally. Since M. Huot 

 makes no reference to literature, 1 can ojly suppose that he has not 

 seen Diamare's paper "Ricerche intorno all' organo interrenale degli 

 Elasmobranchi ed ai corpuscoli di Stannius dei Teleostei" i), in which 

 the homology of the interrenal of Elasraobranchs with the known 

 suprarenals of Teleosts was carefully laid down; further, he must be 

 unacquainted with three papers of my own which bear upon this sub- 

 ject ^). In these I have fully insisted upon the above homology 



1) Mem. della Soc. Ital. delle scienze (detta dei XL), Serie 3, 

 Tome X. 



2) Trans. Zool. Soc. London, Vol. 14, Part 3, 1897. — Anat. Anz., 

 Bd. 13, 1897, No. 1 u. 2. — Proc. Royal Soc. London, Vol. 61, p. 64. 

 (Read Map. 11, 1897.) (Abstract in: Centralbl. f. Physiol., Bd. 11, 

 No. 15, p. 478.) 



