366 Dr. A. G. Butler on neio Pierine Butterflies, 



Snout sliglitly longer than the eye, with distinct canthus 

 rostralis and sloping high sides; tympanum half the size of 

 the eye ; interorbital space much broader than the upper 

 eyelid. Tongue with a shallow emargination behind. Vome- 

 rine teeth in two short transverse series between the choanje. 



Fingers free, the first shorter than the second, the fourth 

 nearly as long as the third ; toes free, the first longer than 

 the second, the fifth much longer than the third. Fingers 

 and toes but slightly swollen at the tip. The length of the 

 body equals the distance of the vent from the metatarsal 

 joint. No metatarsal tubercle. 



Upper parts green (bluish in spirit) ; throat and chest 

 ])luish, with a yellow Y-like marking in the middle and other 

 yellow symmetrical markings on the sides ; the largest of the 

 granules are within these markings. Lower eyelid with a 

 small yellow spot in front and behind. Lower jaw with a 

 yellow margin, continued as a narrow glandular band to the 

 middle of the length of the body. A yellow spot in each 

 groin and several others round the vent and on the lower 

 side of the thighs. No sharply defined Avhite line along the 

 outer side of the forearm and tarsus. 



Length of body 68 millim. 



Distance of vent from extremity of longest toe 95 millim. 



This species seems to have been seen already by Dr. C. 

 Berg, who refers two tulercidated specimens from the Prov. 

 Missiones to Ph. Burmeisteri (An. Mus. Nac. Buenos Aires, 

 V. 1896, p. 212) ; indeed, the two species are closely allied. 

 But after a comparison of our specimen with the types of 

 Ph, Bvrmeisierij I cannot hesitate to regard the differences 

 in the structure of the skin, in the coloration, and in the form 

 of the head as characters of specific value. 



XL. — Descrijjtions of six Pierine Butterflies of the Genus 

 Catasticta i7i the Collection of the British Museum. By 

 Arthur G. Butler, Ph.D. &c. 



The following undescribed species were mostly collected by 

 the late Mr. Buckley in Ecuador, and were confounded by 

 Hewitson (who unfortunately destroyed the labels recording 

 their exact habitats) with well-known species. 



1. Catasticta vapina^ sp. n. 

 Nearest to C. pinava, which it nearly resembles on the 



