Dunn — Two New Central American Salamanders. 145 



Variation. — Another female, M .C.Z. 6944, same locality, has an uninjured 

 tail which is much longer than head and body, head width 14 in length from 

 snout to vent, head length 7f in length of body. The vomerines are 

 separated from the parasphenoids by twice the width of the nares. There is 

 one premaxillary tooth and none on the maxilla. The mandible is toothed 

 to below the middle of the eye. 



Total length 132, head 7, body 51, tail 74. 



Habits. — Not dissimilar to those of 0. imiformis. They may be found in 

 the same log. 



Remarks. — I have compared the original descriptions of imiformis and 

 of vermicularis and they unquestionably refer to the same animal so that the 

 present form is new. I had a third specimen but it wriggled from my hand 

 and I could not find it again. They are easily distinguished from uni- 

 Jormis in the field by the different color. 



Specimens seen 2, as follows: Costa Rica; Zent 2. 



Named for Senor don Anastasio Alfaro of the Museo Nacional, San Jose, 

 C. R., a slight recognition of his kind advice and hospitality and also in 

 appreciation of his contributions to our knowledge of his country. 



