24G Mr. G. A. Boulenger on new 



under the thighs ; no dorso-lateral fold. Dark brown above, 

 with small lighter spots ; two whitish streaks from below the 

 eye to the labial border ; limbs with black cross bands edged 

 with whitish ; throat brown, closely spotted with black and 

 with a black longitudinal streak on each side ; labial border 

 black, with white dots ; belly and lower surface of limbs 

 whitish, with numerous small black spots. Male with in- 

 ternal vocal sacs. 



From snout to vent 47 millim. 



A single male specimen. 



Rana hiporus. 



Vomerine teeth in two small groups behind the level of the 

 choanse. Habit stout. Head short ; snout rounded, a little 

 shorter than the diameter of the orbit ; nostril a little nearer 

 the end of the snout than the eye ; canthus rostralis obtuse ; 

 loreal region slightly concave ; interorbital space narrower 

 than the upper eyelid ; tympanum distinct, two thirds or 

 three fourths the diameter of the eye. Fingers moderate, 

 first and second equal ; toes moderate, half-webbed ; tips of 

 fingers and toes dilated into small disks ; subarticular 

 tubercles small ; a small inner metatarsal tubercle. The tibio- 

 tarsal articulation reaches the eye ; tibia two tliirds the length 

 of the vertebral column. Skin smooth ; no dorso-lateral fold ; 

 a pair of circular flat glands, each with a median impression, 

 under each thigh near its proximal extremity. Dark brown 

 above, with or without a light vertebral line ; a more or less 

 distinct, angular, black cross band between the eyes, light- 

 edged anteriorly ; sides with white dots ; limbs with very 

 indistinct black cross bars ; lower parts white, throat mottled 

 or marbled with black. Male with internal vocal sacs. 



From snout to vent 36 millim. 



Several specimens. 



The name given to this small species refers to the curious 

 femoral glands, which are more developed in males than in 

 females, and may prove homologous with the femoral pores 

 of lizards. Such glands were first noticed in some Madagascar 

 frogs {Rana ulcerosa, guttulata, femor'alis) by Dr. Boettgerand 

 myself ; these frogs, however, differ from R. hiporus in having 

 but a single gland on each side, A recent examination of 

 the types of Polypedates luguhris, A. Dum., has convinced 

 me of its identity with Rana femoralis, which must therefore 

 bear the name Rana lugubris. 



I also find that Polypedates dispar, Bttg., is identical with 

 P. tephrmomystax, A. Dum., from Nossi Be. 



