462 On a neio Lizard and a new Fish from Formosa. 



incisors in the direction of the jaws, not overlapping, the 

 outer ones tricuspid and longer (horizontally) than either of 

 the two middle ones. Lower premolars, as in the upper jaw, 

 very narrow and delicate. 



Dimensions of the type (an adult female in spirit) : — 



Forearm 28 millim. ( = 1'12 inch). 



Head and body 33 ; tail 39 ; head 14 ; ear from notch 11*6; 

 tip to tip of ears 25 ; length of index 28*5, third finger 56, 

 fifth finger 42 ; lower leg 14 ; hind foot without claws 6*2. 



Skull : greatest length 12*7 ; interorbital breadth 2*8 ; 

 breadth of brain-case 6. 



Hab. Mount Mulu, Eastern Sarawak. Coll. C. Hose. 



Type: B.M. 94.9.29.17. 



This interesting little species differs so markedly from all 

 others by its small size and far more delicate skull and den- 

 tition that no detailed comparison of it with its allies is 

 necessary. 



Besides two specimens in spirit from Mount Mulu, Mr. Hose 

 has also sent a skin of K. pusilla from Lake Ansok, River 

 Baram, collected in October 1893, which only difiers by 

 having its throat nearly pure white. 



LX. — Descriptions of a new Lizard and a new Fish obtained 

 in Formosa by Mr. Hoist. By G. A. Boulenger, F.R.S. 



Tachydronms formosanus. 



Head moderately elongate. Nasals in contact behind the 

 rostral ; a series of granules between the supraoculars and the 

 supraciliaries ; a small shield separates the large anterior 

 supraocular from the loreal ; temporal scales very small and 

 keeled ; three pairs of chin-shields. Six longitudinal series 

 o£ large strongly keeled shields, separated on the vertebral 

 line by one or two series of smaller shields ; eight or ten 

 series of strongly keeled ventral shields, with two or three 

 series of smaller shields on each side. Two inguinal pores 

 on each side. Olive-brown above ; a dark brown or blackish 

 lateral band from the end of the snout to the base of the tail, 

 passing through the eye, edged below, and usually also above, 

 by a whitish streak ; the upper light streak, if present, origi- 

 nates above the tympanum and runs along the outer series of 

 dorsal shields ; the lower extends from the end of the snout 

 to the thigh, passing through the tympanum and following 

 the upper series of ventro-lateral shields ; a whitish, black- 

 edged streak along the hinder side of the hind limb ; lower 

 parts whitish. 



