402 



7. Second List of Cold-blooded Vertebrata collected by 

 Mr. Fraser in the Andes of Western Ecuador. By 

 Dr. a. GiJNTHER, Foreign Member Zool. Soc. 



(Reptilia, PI. XX.) 



The second collection of Reptiles and Fishes sent by Mr. Fraser 

 is richer than the first, in specimens as well as in species. Many 

 have retained their natural colours. There are thirteen species of 

 Saurians, six of which are new to science. Three species formerly 

 sent are not in this collection, viz. AnoUs ceneus, Microphractus 

 humeralis, and Amphisbcena fuliginosa. The species formerly men- 

 tioned as Anolis cristatellusi (p. 89) has proved to be a new one, 

 of which better specimens are contained in the present collection. 



The Snakes belong to twenty-one species, several of which have 

 been known for a short period only, and two of which are new. Some 

 are particularly interesting on account of their variation from speci- 

 mens of the same species collected in other parts of South America. 

 Three species formerly sent are not in this collection, viz. Eryttiro- 

 lamprus venustissimus, Xenodon severus, and Spilotes pcecilostoma. 



There are nine species oi Batrachians, two of which are new. 

 Nototrema marsupiatum has been procured of a size not seen before ; 

 four of the species formerly sent are not in this collection ; and it is 

 very strange that Mr. Fraser does not appear to have met with a 

 single Hi/la in the country he has just examined. 



Three species of Coecilia were found, one being new. They are 

 the first specimens met with by Mr. Fraser. 



Eleven species of Fishes, characteristic of the fresh waters of South 

 America, and different from those sent before, conclude the series 

 of this splendid collection : six of them are new to science. 



Typical specimens of the new and interesting species will be re- 

 tained for the Collection of the British Museum. 



SAURIA. 



1. Crocodilus americantjs, Schneid. 



2. Ameiva sex-scutata, n. sp. 



Diagnosis. — Abdominal shields in six longitudinal series. The 

 upper surface of the head covered by a pair of anterior nasals, a 

 single anterior frontal, a pair of posterior frontals with a small 

 single shield between, three pairs of parietals, and many small occi- 

 pitals. Greenish-olive, speckled with brownish : a whitish dorsal 

 streak from the muzzle to the middle of the tail ; on each side of the 

 back from the eye to the loin a black band, edged with whitish. 



Description. — The muzzle is rather elongate, pyramidal ; the 

 nostril is situated laterally immediately behind the rostral, between 

 four shields, viz. rostral, anterior and posterior nasal, and the first 

 upper labial. The successive series of the shields covering the upper 

 surface of the head is as follows: — 1. The rostral shield is obtusely 



