6 L. G. ANDERSSON, SOME NEW SPECIES OF SNAKES. 



two undescribed species, nearly allied to each other, ought 

 to be arrans^ed under a new genus, provisionally in the cata- 

 logue named Fseudohoodon by me. 



On closer studying of the herpetological literature of the 

 låter time, I found, however, that this name was given by 

 Peracca to a new snake from Eritrsea, East Africa, named 

 by him Fseudohoodon Gascae and described in Boll. dei Musei 

 di Zool. ed Anatomia comp. della Universitä di Torino vol. 12 

 N:o 273; 1897. At the first glance on Peracca's generic dia- 

 gnosis it appeared to me that his genus Pseudohoodon and 

 my supposed new genus were identical, although his specimen, 

 however, was specifically distinct from mine. The only modi- 

 fication of Peracca's generic diagnosis, which ought to be 

 made, is that the scales must be said to be disposed in 17 —21 

 rows instead of only 21. 



Synopsis of the species of the genus Fseudohoodon. 



1. Scales in 17 rows, A'^entral shields 135 — 141, subcaudals 



31 — 33 pairs; Fs. alhopiinctatus. 



2. Scales in 19 rows, ventral shields 149—152, subcaudals 



16 — 21 pairs; Fs. hrevicaudatus. 



3. Scales in 21 rows, ventral shields 196—198, subcaudals 



41 pairs; Fs. Gascce. 



Pseudoboodon albopunctatus. Spec. nov. 



Plate I, figure 2, 3, and 4. 



Hypapophyses distinctly developed even on the posterior 

 part of the vertebral column. Maxillary bone not angularly 

 bent, with 19 solid teeth; the five anterior of these very en- 

 larged, separated by a distinct interspace from the small 

 posterior ones, which are closely set, decreasing in size behind 

 and in the specimen examined 14 in number. Anterior six 

 to seven mandibular teeth strongly enlarged and in a conti- 

 nuous series with the much smaller posterior ones, which de- 

 crease in size behind being about equal in number. Head elon- 

 gate, depressed, distinct from neck, with a sharp canthus ro- 

 stralis between the upper face and the vertical sides. In front of 

 the eye there is an elongate deep loreal pit, extending between 



