M. G. A. Boulenger on new Lizards and Frogs. 343 



The scales of the collar larger, and the denticulation they 

 form less acute. 



Abdominal scales a little larger. 



The coloration is also different. Upper surfaces grey, 

 tinged with brown; a yellowish-white streak from the tip of 

 the snout, along the upper lip and passing through the tym- 

 panum, to the fore limb ; a Z-shaped black mark in front of 

 the arm, the posterior branch upon the latter, the anterior 

 branch on the neck, above the white streak ; a scries of five 

 or six oval or subrhomboidal black spots along each side of 

 the back. Flanks with blackish and whitish spots. Limbs 

 transversely barred with oblique black lines. Lower surfaces 

 whitish, immaculate in the female ; in the male, the throat 

 light blue in the middle, qnd the belly of the same colour, 

 but with the median zone whitish. 



Several specimens were collected by Herr Forrer in Western 

 Mexico (Tres Marias Islands and Presidio). Ufa (Phymato- 

 lepis) bicarinata was also obtained at Presidio by Herr Forrer. 



Rana Forrerij sp. n. 



Vomerine teeth in two small groups close together, extend- 

 ing beyond the level of the hinder edge of the choanse. Head 

 moderate ; snout broad, rounded, with distinct canthus ros- 

 tralis ; loreal region strongly concave ; nostril nearer the eye 

 than the border of the mouth ; interorbitai space very narrow, 

 not quite half the width of the upper eyelid ; tympanum very 

 nearly as large as the eye. Fingers and toes rather pointed, 

 with very small subarticular tubercles j first finger not ex- 

 tending beyond second ; toes extensively webbed, though not 

 to the tip ; a single small, blunt, metatarsal tubercle. The 

 hind limb being carried forwards along the body, the tibio- 

 tarsal articulation reaches the tip of the snout. Back with 

 large, elongate, prominent glandules ; a strong, very promi- 

 ment, glandular lateral fold. Olive above, with suboval, 

 insuliform, light-edged black spots, larger and forming cross 

 bars on the limbs ; flanks black-and-white marbled : hinder 



side of thighs blackish, white-dotted j lower surfaces white, 



uniform, except greyish variegations on the throat. From 

 snout to vent 72 millim. 



The nearest allies of this species are Rana clamata and 



septentrionalis. 



One female specimen from Presidio. 



Rana pu$tuhsa 7 sp. n. 

 Vomerine teeth in two short oblique series, extending be- 



