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^nionymy, from works to which I have had no access before. 



Page 2. Dactylethra Isevis. 

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



Page 3. Pipa americana. 



Guichen. Rept. in Castelnau, Anim. nouv. on tares do VAiner. clii SucI, 

 p. 92. pi. 18. 



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

 by Sii- A. Smith. 



Page 3. Myobatrachus paradoxus. 



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

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

 hind the inteiTnaxillaiy bone. The tympanum and ca's^mi tympani 

 are absent; and thus we have, in the Protero-, OpistJw-, and AgJossa 

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

 physis of the sacral vertebra is dilated. Prof. Schlegel \vill figure 

 this Batrachian in the second Part of his Zoology. 



Pages 4 and 22. LEIUPERUS. 



Schmidt {Denksclir. Acad. Wiss. Wien, 1 858, p. 240) is perfectly 

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

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

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

 account given in the Erpetohgle generale. This genus therefore 

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

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

 " toes free." 



Page 5. Add to the Sgno2}sis of the Genera. 



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

 vomerine teeth. 



