APPENDIX. 



The present Appendix gives an account of the specimens collected 

 since this Catalogue was printed, and descriptions of several new spe- 

 cies. I am also enabled to make some additional remarks, especially 

 to the s}Tionymy, from works to which I have had no access before. 



Page 2. Dactylethra laevis. 

 /. Adult. Cape. Presented by Sir A. Smith. 



Page 3. Pipa americana. 



Guichen. Rqit. in Castelnau, Anim. noiiv. ou rares de rAmSr. clu Sud, 

 p. 92. pi. 18. 



c'. Female with young on the back. Tropical America. Presented 

 by Sir A. Smith. 



Page 3. Myobatrachus paradoxus. 



Professor Schlegel of Leyden has kindly informed me, that the two 

 large canines are true teeth of the vomer, situated immediately be- 

 hind the intermaxillary bone. The tympanum and cavum tympani 

 are absent ; and thus we have, in the Protero-, Opistho-, and Aglossa 

 respectively, forms with an imperfectly developed ear. The diapo- 

 physis of the sacral vertebra is dilated. Prof. Schlegel wiU fignare 

 this Batrachian in the second Part of his Zoology. 



Pages 4 and 22. LEIUPERUS. 



Schmidt (Denkschr. Acad. Wiss. Wien, 1 858, p. 240) is perfectly 

 right in denying the existence of the web between the toes of 

 these Batrachians. I had formerly seen only a single young speci- 

 men of Leiuperus marnioratus, and was obliged to confide in the 

 account given in the ErpetoJogie generale. This genus therefore 

 must be removed into the family of Cystignatliklce ; and in the dia- 

 gnosis of the genus, " toes webbed at the base " must be altered into 

 " toes free." 



Page 5. Add to the Synopsis of the Genera. 



14 a. Stenorhynchus. Toes half- webbed ; tympanum hidden ; no 

 vomerine teeth. 



