24 Rept. 
REPTILIA AND BATRACHIA. 
Gaudry, A. Les enchainements du monde animal dans les temps geo- 
logiques. Fossiles primaires. Paris : 1883, 8vo. 
Pp. 251-288 and numerous woodcuts are devoted to the Batrachia 
Stegocephala. Reproduced in Arch. Z. exper. (2) i. pp. 1-30, pis. i.-vii. 
R. Lydekker has notes on some Gondw&nal Labyrinthodonts ; Rec. 
Geol. Surv. Ind. xv. [1882] pp. 24-28. 
Branchiosaurus gracilis , Oredn., is the larva of B. amblystomus , Credn.; 
there is no evidence of its being identical with Protriton petrolei , Gaudry, 
as stated by Steinitz & Deichmiiller : Credner, l. c. p. 275. 
Acanthostoma vorax , Credn. (= Melanerpeton spiniceps , Gein. & 
Deichm.), extensively described and figured ; id. 1. c. p. 277, pis. xi. 
figs. 1-9, & xii. figs. 1 & 2. 
Melanerpeton spiniceps , Credn., described and figured ; id. 1. c. p. 289, 
pi. xii. figs. 3-5. 
Discosaurus , g. n. ( Limnerpetid .), for D. permianus , sp. n., id. 1. c. 
p. 294, pi. xii. figs. 6-10. 
Pachygonia incurvata , Huxley. Mandible figured by Lydekker, l. c. 
pi., figs. 2-4. 
Gonioglyptus huxleyi } sp. n., id. 1. c. p. 26, pi., fig. 5, Panchet Group, 
Gondwiiua Rocks. 
Glyptognathus fragilis, g. &. sp. nn., for fragment of mandible from 
the Panchet Rocks, id. 1. c. p. 27, pi., fig. 1. 
Trimerorrhachis bilobatus , sp. n., Cope, P. Am. Phil. Soc. xx. p. 629, 
Permian of Texas. 
Edaphosaurus , g. n., apparently allied to Pantylus, with which, and 
perhaps also Helodectes , it forms a new family, Edaphosauridce , dis- 
tinguished from Clepsydropidce by the presence of more than one series 
of teeth on parts of the jaws; id. 1. c. p. 448. E. pogonias , sp. n., 
id. 1. c. p. 449, Permian of Texas. 
Pariotichus megalops , sp. n., id. 1. c. p. 630, Permian of Texas. 
Pariotichus , Pantylus , and probably Ectocynodon , must be referred to a 
special family, the Pariotichidce , which has teeth like the Edaphosauridce , 
but differs from it in the eutire over-roofing of the temporal forsa. 
Ectocynodon aguti , sp. n., id. 1. c. p. 451, Permian of Texas. 
Diplocaulus , Cope. Genus recharacterized, id. ibid ., and a species 
added, D. magnicornis ) sp. n., p. 453, Permian of Texas. 
Acheloma , g. n., differing from Eryops in the absence of notch of the 
posterior border of the skull between the epiotic and quadrate or squam- 
osal bones, and in the absence of condyles of the humerus ; id. 1. c. 
p. 455. A. cumminsi , sp. n., id. 1. c. p. 456, Permian of Texas. 
Anisodexis, g. n., differing from all other Eryopidce in the great and 
abrupt inequality of the teeth of the external series of the mouth ; 
id. 1. c. p. 459. A. imbricatus , sp. n., id. ibid ., Permian of Texas. 
The author appends a list of the known species of the family Eryopidce. 
