66 PROCEEDINGS OP THE ACADEMY OP 



greatly developed ; toes webbed as far as distal extremity of first phalans, the 

 three first provided with a nail, sharp pointed, slightly iiicurvated ; these nails 

 are convex above, but present a ridge along their middle below ; a sharp pointed 

 short spur at the base of the first toe ; second toe longer than first, third longer 

 than second, fourth and fifth of nearly equal length ; no subarticular tubercles 

 visible ; posterior extremities smooth both above and below, no pores upon the 

 xhighs. 



Coloration, as given in the specific characters. 



Dimensions. Length from tip of snout to anterior extremity 6 lines ; between 

 anterior and posterior extremities 10 lines ; of arm IJ lines ; of forearm 3 ; of 

 hand to extremity of longest finger 3i lines ; of thigh 6 lines ; of leg 7 ; of foot 

 to extremity of longest toe (the third) 8 lines. 



Uabilat. Gaboon. One specimen presented by Dr. Henry A. Ford. 



Gen. Remarks. Dactylethra belongs in Dumeril and Bibron's arrangement, to 

 the second group of the Anourous, or Phrynaglossal Batrachians, (Phryna- 

 glosses) and family of the Pipteformes, being entirely destitute of a tongue, 

 wheieas the 1st gioup, or the f haneroglossal, have this organ " developed in a 

 greater or less degree." The Phrynaglossal Batrachians, including but two 

 genera at present known, viz., Dactylethra and Pipa, have also this very re- 

 markable peculiarity, that instead of two eustachian foramina, there is but one, 

 and that situated at the middle of the posterior part of the palate. In Dactylethra 

 Mdlleti this is very large. We had proposed for this singular Pip^form the name 

 spinosa, from the spur at the base of the first toe, but having received the 12lh 

 number of the Revue de Zoologie for 1856, we find it mentioned and referr'^d to in 

 the interesting and important paper of Prof. Aug. Dameril, with the well known 

 and honored name Miilleri given to it in 1844 by Prof. Peters of Berlin, (Monats 

 Bericht ber Kon. preuss. Acad, zu Berlin, 1844, p. 37) who has found it also in 

 Mozamoique. 



Having now finished the notice of Dr. Ford's collection, which contains so 

 many animals new to science and of great importance in the study of the geo- 

 graphical distribution of Reptiles, I propose to correct some errors in former 

 papers of mine upon the Reptiles of Western Africa — which either had escaped 

 my attention, or which a better knowledge of the subject, and the aid of my 

 vade mecum in that branch of science, Dumeril and Bibron, have enabled me 

 to point out. Pachydactylus tristis appears to be identical with Platydactylus 

 theconyx, a common West India animal, the label indicating the locality having 

 been erroneous. Tropidolepis Africanus and Calotes versicolor are identical with 

 Agama Oolonorum. Python Liberiensis is identical with Python bivittatus, (Py- 

 thon kSebae, D. & B.) admirably described by Prof. Schlegel and long known. 



Bo.v LiuERiENSis. Proceed. Acad. N. S , vol. vii. (1854) p. 100. 



The animal indicated is not identical with Python Liberiensis, (Python 

 biyittatus, Schlegel,) the latter specimen having at the time been mislaid, but 

 ii the young of Epicrates cenchris from S. America. 



Fam. SYNCRATERIANS, (innocui.) 



Dendroi'his flavigularis, Proceed. A. N. S. vol. vi. p. 205. 



The Aboricole serpent described in the Proceedings of the Academy with the 

 above name is not a Dendrophis, but presents characters quite sulficient to consti- 

 tute it a new gentis. It differs from Dendrophis in the following i)articulars : 1st. 

 Dendrophis is an Isodontian, the teeth having equal proportions, the Sj' ncraterians 

 having the posterior longer. 2d. It wants the larger row of scales alongthe median 

 line of the back, characteristic of Dendrophis. 3rd. The eye in Dendrophis 

 rests on the fifth and sixth supra-labials. 4th. The rostral appears more 

 upon the top of the head, and the internasals are proportionably larger. 

 5th. In Dendrophis the frontal is more acute posteriorly, and the parietals are 

 longer than broad. Gth. In Dendrophis the frcnal is long and narrow and not 

 quadrate ; there are two post-oculars instead of three, and the temporal plates 

 are more numerous. 7th. The nock is more narrow in Dcndroj)liis, the abdo- 

 uiuu is an<>'ular and the scales are smooth. In llcrpctodryas (Isodontian) the 



[Feb. 



