142 ALBATROSS EXPLORATIONS, REPTILES COPE. 



The genus Nannophryne differs from Bufo in the entire absence of 

 the cavmn tympani and Eustachian tubes.- It is identical with Ollotis 

 Cope, and the name proposed by Giiuther must be retained as it was 

 published in jS73, while Ollotis was not proposed until 1875. Nanno- 

 phryne ( Ollotis) ccerulescens Cope is from the Cordilleras of Costa liica. 



In the Zacluvnus roseus, described below, the auditory organs, though 

 present, are minute. From the same region two other genera with im- 

 perfect auditory organs are known, Alsocles Bell and Eusophus Cope 

 (= Cacotus Gthr.). I have already called attention to the tendency to 

 this peculiarity among the Salientia which inhabit mountainous re- 

 gions.* Cophcvus, Batrachophrynus and Telmatobius are from the Peru- 

 vian Andes, and Crepidophryne, Cranophryne, and Nannophryne from 

 the Cordilleras of Central America. 



7. Zachaenus roseus sp. nov. Cystignatkidaium. 



Head and body rather short ; hind legs elongate. Width of head 

 entering length of head and body, two and a half times, and equal the 

 length of the head measured on the side to the middle of the tympanic 

 drum. Heel of extended hind leg reaching a point between the orbit 

 and the nostril. Head depressed, muzzle but little prominent in pro- 

 file; nostril but little nearer end of muzzle than to eye. Tympanic 

 disk a vertical oval, not defined below, but, if completed, measuring less 

 "than half eye-fissure. Interorbital space flat, wider than eye-fissure. 

 Tongue a longitudinal oval, but little free, and slightly notched pos- 

 teriorly. Vomerine teeth in two fascicles near each other, and just 

 posterior to the line connecting the posterior borders of the internal 

 nares. Internal nares minute. 



Skin smooth above and below ; the abdominal integument forming a 

 disk, the anterior fold of which extends from axilla to axilla. A narrow 

 glandular fold from the posterior part of the eyelid to just above the 

 axilla. Digits with slight tubercles below, and the inferior surfaces of 

 their extremities thickened. First finger shorter than second. Toes 

 rather short, with indistinct dermal borders. An internal, but no ex- 

 ternal solar tubercle. No tarsal tubercle ; the thin inner edge turned 

 upwards. 



Color, pale rose gray above, dirty white below. A black band ex- 

 tends from the end of the muzzle along the canthus rostralis, and fol- 

 lows the glandular fold to its end above the axilla. A brauch descends, 

 and, crossing the tympanic drum, stops a short distance in front of the 

 shoulder. Limbs with very indistinct dusky cross-bars. Tarsus dusky 

 below. Two large brown spots on the front side of the fore-arm. Two 

 similar spots on the proximal half of the front of the tibia. 



Length of head and body, 23 mm ; of head to posterior edge of tym- 

 panum (axial), 7.5 mm ; width at canthus oris, 9 nim ; of fore leg, 14 mm ; 

 of fore foot, 6 mm ; of hind leg from vent, 37 mm ; of hind foot, 15.5 mm ; of 

 tarsus, 8 mm ; of tibia, 11.5 lum . 



*"Batrachia and Reptilia of Costa Rica : Journal Academy Philada., vii, p. 95. 



