MISCELLANEA, 149 



resembles both in form and size the false molar of the adult animal. 

 It is not, however, permanent, as Professor Owen has supposed, 

 since there is above it an alveolus containing the germ of a new tooth. 

 No traces of teeth corresponding to the posterior upper incisor and 

 the canine are found in the lower jaw ; but on the left side the two 

 corresponding molars, and on the right side the posterior molar only, 

 are present. The latter tooth had been previously noticed by Ger- 

 vais. The space between these molars and the incisors is covered with 

 smooth membrane ; so that if teeth had previously existed there, they 

 must have been exceedingly small. As regards the upper and lower 

 true molars, the crowns only are partly developed. The deciduous 



2 1 1-1-1-1 1 2 



formula of this genus is therefore as follows: — j, 5' \]{ ^ 5? 2, 

 which exhibits a close relation to that of the Insectivora, in which the 

 lateral incisors, the canines, and the teeth in the diastema often be- 

 come obliterated owing to the increased development of the anterior 

 incisors. Another distinction between this genus and the Glires is 

 that, in the female, the distance between the anal and genital aper- 

 tures is very considerable, and the two-horned uterus differs in shape 

 from that of the E/odents. The internal structure differs from 

 that of the genus Lemur and Microcelus in the fundus of the gall- 

 bladder being, as is usual, directed forwards, and not backwards. If 

 we are not prepared to make a separate order for this genus, to be 

 placed between the Quadrumana and the Rodentia, as Brandt has 

 proposed, it would, on the whole, be the most natural to regard it as 

 an aberrant family of the Lemurs, according to Isidore Qeoffroy's 

 suggestion. Besides the form of the soles, and the opposable 

 thumb of the hinder extremity, the principal characters to be con- 

 sidered are the formation of the skull and of the brain. As regards 

 the dentition, it would be of much interest to investigate wdiether 

 at any period of the foetal life of the Glires, there exist teeth cor- 

 responding to the milk-teeth of the Chiromys. 



7. Calltjna tulgaeis in Cape Beeton, in Noeth Ameeica, 



Notices respecting the existence of the Calluna in Massachusetts 

 and Newfoundland have appeared in former numbers of this Eeview, 

 namely, No. YII. page 346, No. XIII. page 151, and No. XIY. 

 page 313. It is worth while to add to those two former records an 

 intermediate habitat, as a link of connection, which fixes the Ame- 



