THE BATRACHIA OF NORTH AMERICA. 201 



cxa. A li<>amentons postfronto-squamosal arch. 



Touguc small; vomeropalatiuc teeth in lougitudiual series, wliieh couverge 



and join anteriorly, forming a /^ Triturus. 



II. Pterygoid united broadly with maxillary l)on?. 



Postfronto-squamosal arch partly ligamentous; tongue little free; teeth 

 forming a A Pachyirilon 



Tlio species of this family recorded iu Bouleuger's Catalogue of the 

 British Museum are the following : 



Chloglossa lusitanica Bocago, Portugal, and northwest Spain ; Sala- 

 maudra maculosa L., central and southern Europe, Algiers, Syria ; S. afra, 

 Laur., the Alps, 2,500 to 12,000 feet; ;S^. caucasica Waga, Caucasus; Hem- 

 isalaniandra cridata Laur., Europe; Trtturus blasli De I'Isle, north- 

 west France ; T. marmoratus Latr., France, Spain, Portugal ; T. alpes- 

 tris Laur., central Europe; T. vulgaris Linn., Europe, except southern 

 France, Spain, and Portugal ; temperate Asia ; T. crocatus Cope, Syria ; 

 T. monfanus Savi, Corsica; Pacliytriton hrevipes Sauvage, South Kiansi, 

 China. 



PLEUEODELID^. 



Cope, Journ. Acad. Phila., 1836, p. 108. 

 Pleurodelidce and Siranoiidw Gray, Proceed. Zool. Soc. London, 1858, p. 142. 



No ethmoid bone. Vomeropalatiuc bones, with posterior separate 

 processes, extending over the paraspheuoid, and having teeth on their 

 inner margins. Prefrontals and pterygoids present. Parietals not 

 embracing the broad frontals. No dentigerous plates on the parasphe- 

 uoid bone. An osseous postfronto-squamosal arcli. Ceratohyal free, 

 connected with quadrate by ligament. Carpus and tarsas osseous. Ver- 

 tebrne opisthocojlous. No otoglossal cartilage. (Plate 34, figs. 2-7). 



This family differs from the Salamandridiie only in its post fronto- 

 squamosal arch. Eudiments of it already appear in some members of 

 the latter. 



The genera of this family are all found in the Old World. One of 

 them is represented by two species in North America. They are dis- 

 tinguished as follows : 



I. Maxillary hone not reaching quadrate. 

 a. Ribs not perforating the skin. 



Toes, 4 Salamandrlna.* 



Toes, 5 - Diiimijctuhts. 



aa. Ribs perforating the skin; vomeropalatiuc teeth in a /\. 



Toes 5 PleurodeJcs. 



II. Maxillary bone reacliing quadrate. 



Toes 5 GlossoJegaA 



The species of the above genera are as follows : Salamandrina per- 

 spicillata Savi, Italy; Diemyctylus vittatus Gray, Asia Minor, Syria; 

 3. palmatus Schneid., central and western Europe; D. montandonii 

 Boul., Moldavia; D. boscw Lataste, Spain, Portugal; D. pyrrliog aster 



* Seiranota Barnes. t Tylofriton Anders. 



