150 Review of the Progress of North American (February, 
divided into Dactylethriformia and Pipzeformia, the latter without — 
teeth in the upper jaw. 
The classifications of Ginther, Mivart and Cope are reviewed 
the character separating the Bufoniformia from the Hylapesiformi, 
and that dividing the Aglossa, are taken from Mivart, while the 
reasons given for the rejection of Cope’s views are: Ist, the diffi- 
culty that arises, in practice, when a valuable specimen can only 
be correctly placed by its destruction in the search for characters 
drawn from its osteology ; 2d, the length of time necessary for the 
complete ossification of the batrachian skeleton, so that, unless 
the specimen is adult, it cannot always be determined to which 
section it rightly belongs. 
The first of these objections is well answered by Mr. G A. 
i ; ia 
Boulenger, in the introduction to the catalogue of Batrachia 
Salientia in the British Museum, already noticed by us in Vol 
XVU, p. 181. In adopting Professor Cope’s system, Mr. Boulet 
ger says, “ Very little skill is required to obtain the necessa 
information without serious injury to the specimen. Hoe 
gists have long been in the habit of making an incision p 
skin of the pelvic region for the purpose of ascertaining whet 4 
the diapophyses of the sacral vertebrz are dilated or not; & ™ 
made in the same manner along the thorax will show the ie 
characters, and another (which can be sewn up again) along 
side of the body, will suffice for the examination of the struct® 
of the vertebral column.” ad 
M. Brocchi’s volume is illustrated by ten well executed p v 
plates, in which the external and craniological characters © 
newly described species are shown. 
Among the new forms are Rana vaillantii, Rana macros 
R. maculata, Leptodactylus fragilis, Hyla plicata, H. panulats 
T pie 
phias is proposed, but this is a synonym of the Hypsibo# 
pe EPP LD ESSE CR ee COE IE ee PL a ee 
. 
crassa and H. guatemalensis. For the latter the new name, B 
Wagler, as defined by Cope. There are some other synomy™ . 
among the Bufones and Hyle. 
Among the species described from Mexico the following 0c 
also in the United States, according to Brocclin, Rana halen a 
Scaphiopus solitarius Holbrook, Hyla regilla Baird and Gir? 
(Oregon, California), Hyla versicolor Harlan, Hyla vÀ 
(Florida) and Hyla cadaverina Cope (Pacific Region). 
cosb 
Miss M. H. Hinckley (Proc. Bost. Soc, Nat. Hist., 1880) 4 
