1898.] ox REPTILES AXD BA.TEA.CHIA.NS FROM W. ECUADOR. 1 07 



chin-sbields, posterior separated by scales. Scales feebly imbricate, 

 27 rouad the neck, 37 round rhe body ; scales nearly smooth on 

 the ]ieck, with a short tubercular keel on tbe body. Ventrals 

 distinct throughout, 298-321 . Dark oUve or blackish ; a cresoentic 

 yellow band from eye to eye across the snout, and a yellow band 

 behind the eye ; some small yellow markings on the crown ; neck 

 with yellow cross-bars, much narrower than the spaces between 

 them; these bars gradually increase in extent on the body, but 

 never completely encu-cle it; 69 yellow bars altogether on the 

 body and tail. 



Total length 900 millim. ; tail 80. ... 



This species, of which two specimens were obtained in Brunei 

 Bav by Mr. S. S. Flower on the 3rd October, 1897, is nearest 

 related to HiidropJiis mamiUaris, with which it agrees in form, 

 scaling of the body, and coloration, but differs in the shorter 

 frontal and the presence of a single postocular and a single anterior 

 temporal. From H. fasciatus it differs in the lower number of 

 scales round the body and the presence of scales between the 

 posterior chin-shields, as well as in the coloration. 



The larger of the two specimens (which is figured, Plate IX.) 

 presents these anomalies, that tbe nasal shields are fused in their 

 anterior half, and that a small additional chin-shield has arisen 

 through division of the first left lower labial. 



4. An Account of the Reptiles and Batrachians collected 

 by Mr. W. F. H. Rosenberg in Western Ecuador. By 



G. A. BoULENGERj F.R.S. 



TEeceived Februai'y 1, 1898.] 



(Plates X.-XVIII.) 



The collection made by Mr. Eosenberg in Ecuador, of which a 

 complete set will be acquired for the British Museum, adds con- 

 siderably to our knowledge of this herpetologically so fertile district, 

 and to the long list of species with which we are acquainted 

 through the previous explorations of Fraser, Orton, Espada, 

 De Ville, Buckley, Whymper, and Festa. Twenty-three new 

 species are described in this paper. 



The localities whence the specimens were obtained are: — 

 Cachabe, Paramba, Ibarra, Cayamba, and Chimbo. 



Mr. Eosenberg has kindly furnished me with the following 

 informatioQ respecting these places : — 



1. Cachabe, a small village on the river of that name, on the 

 N.W. Coast, in the Prov. Esmeraldas. Owing to an accident to the 

 barometer, the exact altitude of the village could not be ascertained, 

 but it is probably about 500 feet above the sea. It is surrounded 

 by dense forest. 



2. Paramba, a farm on the W. bank of the Eiver Mira, at 

 3500 feet altitude ; it is still in the forest region, but the open 

 country commences two or three miles higher up the Mira. 



