of certain Birds of Cuba. 39 
rhynchus as approaching the quadruped Reptiles much more 
than Birds. Thus, being arrived at an Oviparous animal (or at 
least one that is close to the oviparous structure) and a Rep- 
tile form, we detect a connection between the opposite points of 
the circle of Vertebrata; that is, between the Mammalia and 
Reptilia, analogous to those relations we have already seen in 
groups of lower rank existing between the Raptores and Rasores, 
between the Fere and Glires. Aristotle and Ray had both some 
vague idea of a relation between Viviparous and Oviparous qua- 
drupeds. But Hermann, although the Ornithorhynchus was un- 
known to him, has positively expressed it in the following words : 
“Ab iis autem (i.e. & Myrmecophage et Dasypodis generibus) 
transitus est ad Lacertas et Testudines, quarum illas squamis 
suis Manes has scuto Dasypodes referunt.” 
‘The following series, therefore, forms as it were a diameter of 
the circle of Vertebrated Animals*, passing from the Mammalia 
to the Reptilia. 
Primates ‘ 
\ Bradypodee—Dasypoda—Monotremes Cuv.—Reptilia. 
Ungulata 
I am far, however, from wishing it to be supposed that I 
think the Edentata do not all, or at least in some degree, enter 
into the group of Ungulata. Although this order requires still 
to be wrought out,—until which be done, nothing can be con- 
sidered as ascertained on the subject,—I see an evident analogy 
between certain Edentata and the genus Hystriv, which for the 
present I can only attribute either to their being in contiguous 
orders, or to the circumstance of distinct relations of analogy 
existing between the group of Dasypode Gray, and of Talpide 
Gray, which last are certainly Carnivorous animals. To explain 
what I mean by the last of these alternatives, I shall first cite 
* See diagram, Hore Ent. p. 318. 
the 
