162 MR. G. A. BOULENGER ON THE REPTILES 



2. MoLGE, Men-em, 1820. 



Tail compiessed. Aquatic during tiie breeding-season. 

 Three species in Barbary. 



A. Palatine teeth not extending forwards beyond tlie Hue of the choanse. 



Palatine teetli forming a n ; contour of lower jaw semicircular \. paired. 



Palatine teetli forming a A ; contour of lower jaw semielliptic 2. hagenmvelleri. 



B. Palatine teetli extending forwards beyond the line of the choanae . ... 3. waltlii. 



1. MoLGE POiRETi, Gervais, 1835. 



Etiproctus rusconii, Guiclienot. Triton nebulosus, Guicheuot. 



Palatine teeth in two sliohtly curved series, approximating in front, forming a fl. 

 Tongue subcircular or oval, free behind and on the sides. Head much depressed, as 

 long as broad or a little longer ; snout hr-oad, rounded, the contour of the jaws semi- 

 circular. Tail longer than head and body. Skin tuberculate ; a more or less distinct 

 gular fold. Olive above, yellow or orange beneath, with or without small black spots. 



Total length 150 millim. 



Common near Algiers and at L'Arba, whence M. Lataste received specimens. He 

 also observed it at Guyotville, and received a specimen from Bougie, through Dr. 

 Hagenmiiller, in 1882. Guichenot records it from Oran, and Giglioli from near Tunis. 



Figured under two different names by Guichenot. 



2. MoLGE HAGENMUELLERi, Lataste, 1881. (Plate XVIII. fig. 4.) 



Distinguished from the preceding by the series of palatine teeth being less far apart 

 anteriorly, forming a A ; head longer, contour of jaws semielliptic. Fingers and toes 

 more slender. 



Size smaller, 100 millim. 



This species was founded on numerous specimens sent from Bona and its environs 

 by Dr. Hagenmiiller to M. F. Lataste. It has since been recorded from Biskra by 

 Dr. Boettger. Specimens received from Constantine through M. Henon in 1881, induce 

 M. Lataste to regard M. hagenjyiuelleri as a variety of M. jjoireti, as there appears to be 

 a complete passage between them and the specimen from Bougie noticed above. 



I have given figures of typical specimens from Bona, on Plate XVIII. fig. 4. 



3. MoLGE WALTLII, Michahelles, 1830. 



Palatine teeth in two slightly curved series approximating in front, commencing in 

 front of the line of the choanse. Tongue subcircular, free on the sides and behind. 

 Head much depressed, as long as broad. Tail longer than head and body. Eibs 

 very long, ending in a sharp point, which frequently perforates the skin. Skin 

 tuberculate ; a strong gular fold. Olive-brown above, yellowish beneath, with 

 blackish markings. 



