980 General Notes. [ November, 
rudimental parapophysis, but this is very feebly marked off from 
the diapophysis. In the fifth vertebra the parapophysis and dia- 
pophysis form together an oblique ridge, chiefly extended verti- 
cally, and to which the expanded head of the pleurapophysis 
articulates by a single surface.” 
Günther! says: “In one example the pleurapophysis of the 
fourth vertebra is not bifurcate, the lower branch being replaced 
by a ligament, and no trace of a parapophysis can be distin- 
guished.” 
Albrecht? says: “ Quatrième vertébre cervicale-—Diapophyses 
bien développées et séparées par une échancrure d’un rudiment 
e parapophyse. Tubérosité de la cote également bien devel- 
oppée et séparée aussi par une échancrure du col de la 4° cote 
cervicale. La diapophyse articule avec la tubérosité de la dite cote, 
tandis que le rudiment de parapophyse est réuni par un ligament 
au col. Nous avons donc ici une combinaison des cas de Owen 
et de Gunther. 
According to all these authors the first rib appears on the 
fourth vertebra. : 
y own examinations made on two alcoholic specimens of 
Sphenodon, show the following : ; 
First vertebra (atlas). — Single headed /igamentous ribs con- 
nected with the distal part of first intercentrum (between occipital 
condyle and atlas). : 
Second vertebra (axis). — Two-headed ligamentous ribs. Ca- 
pitulum connected with distal part of second intercentrum (be- 
tween atlas and axis); tuberculum connected with a small 
diapophysis of the vertebra. ae 
Third vertebra.—First specimen, two-headed Agamentous ribs ; 
second specimen, two-headed osseous ribs. Capitulum ligamen- 
tous connected with small process (parapophysis) on the posterior 
lateral part of third intercentrum, tuberculum connected with dia- 
pophysis. 
Fifth vertebra—One-headed osseous ribs. Capitular part re 
mentary and ligamentous, connected with fifth intercentrum, x 
ilum well developed, attached to a short but broad diapophys i 
ll the other cervical and dorsal vertebrz show the same con 
tion as the fifth cervical. J the 
Albrecht’ believes that the diapophysis of the fifth an 
| Günther, A. Contribution to the Anatomy of Hatteria (Rhynchocephalus 
Owen). Philos, Trans., Part 1, for 1867, p. I1. emplaire 
__. * Albrecht, P., Note sur la présence d’un rudiment de Proatlas sur un er jé: 
de eria punctata G Bull. Mus. Roy. d’Hist. Nat. Belg., Tome I, 19°3, 
A eS ites. 
