A. 



-t the request of the Director of the vertebrate department 

 of the E/Oyal Museum in Stockholm, Professor F. A. Smitt, 

 the auctor of this small paper has determined and cataloguised 

 the collections of reptiles and batrachians, there are to be 

 found in this museum. By this, it was shown that among 

 the rich collection of snakes there were several, hitherto not 

 described, species, on which now in this paper I am intend to 

 give diagnoses and iigures. Most of these new species (5) 

 came in the year 1885 from Mapanja, Cameroon, from Messrs. 

 Knutson and Valdau, swedish merchants and explorers in that 

 country. A few specimens, belonging to these same species, 

 were received in 1886 by Mr. Knöppel and one by the swedish 

 naturalist, Doctor R. Jungner, who in the years 1890 — 91 tra- 

 velled in Cameroon. The three south- American forms are all 

 obtained in 1862 from Doctor Touzet at Rio Janeiro by kind 

 mediation of Mr. Hyltén-Cavallius, at that time Swedish 

 Chargé d'affaires to the Brasilian court. One of the new 

 species is kept in the Royal Museum since old times without 

 any information of patria, collector or year, when collected. 



Beside these diagnoses of new species I beg also to offer 

 some notes on some specimens of snakes in the collections of 

 the museum, which differ from the typical forms, hoping they 

 will be interesting for the herpetologist. 



To my honoured chief, Professor F. A. Smitt, I want to 

 express Tay sincere gratitude for his great kindness of per- 

 mitting me to get the drawings of my figures at the expen- 

 ses of the museum, by which it has been possible to obtain 

 good figures for the diagnoses. 



