128 



BULLETIN 160, UNITED STATES NATIONAL MUSEUM 



Remarks. — Cope considered that the presence of a fronto-parietal 

 fontanelle was of sufficient importance to warrant a generic separation 

 of this form from related species of Syrrhophus. The type of this 

 species (U.S.N.AI. No. 9888) should be compared with the young of 

 Leptodactylus melanonotus . It was collected by Alfred Duges at Guana- 

 juato and is now somewhat shrunken and faded. It measures as 

 follows: Head-and-body length, 21.7 mm.; transverse diameter of 

 tympanum, 1.2 mm.; transverse diameter of eye, 3 mm.; anterior 

 edge of eye to nostril, 2.2 mm. The terminal phalanges of the toes 

 on left hind foot are missing. 



Specimens exajnined. — Three, as follows: 



Syrrhophus guttilatus 



I Type. 



SYRRHOPHUS LEPRUS Cope 



1879. Syrrhophus leprus Cope, Proc. Amer. Philos. Soc, vol. 18, no. 104, p. 268, 

 June 20. 



Type locality. — Santa Efigenia in Tehuan tepee, State of Oaxaca, 

 Mexico. 



Range. — Not known to occur elsewhere than at the type locality. 



Remarks. — Our knowledge of this little toothless frog is limited to 

 the type specimen (U.S.N.M. No. 10040) collected by Francis Sumi- 

 chrast. So far as known no other collector has since rediscovered this 

 species. The coloration as described by Cope does not seem to agree 

 with what might be expected to occur in the young of the leptodacty- 

 lids whose geographic ranges include Oaxaca. The measurements are 

 as follows: Head-and-body length, 24.3 mm.; transverse diameter of 

 tympanum, 1 .4 mm. ; transverse diameter of eye, 3 .5 mm. ; anterior edge 

 of eye to nostril, 2.5 mm. 



Specimens examined. — One, the type. 



SYRRHOPHUS VERRUCIPES Cope 



Amer. Philos. 



Soc, vol. 22, pt. 4, 



1885. Syrrhophus verrucipes Cope, Proc. 

 no. 120, p. 383, Apr. 17. 



Type locality. — At the bottom of a rocky gorge of a stream near 

 its junction with the San Miguel River, at least 1,800 feet below the 

 town of Zacualtipan in northeastern Hidalgo, Mexico. 



Range. — Not known to occur elsewhere than at the type locality. 



