On Reptiles and Batrachians from E, Bolivia. 189 
As regards the phalanges, compared with the normal digital 
formula of 2.2. 3.4, 3, the first or undissected specimen 
(fig. 1) shows a formula of 0. 1. 2. 3. 1, while the second or 
dissected specimen (fig. 2) gives a formula of 0. 1. 2. 2. 2. 
The fourth digit of the former appears to have met with a 
misadventure after development; hence I have queried the 
third phalanx. In short, one phalanx almost always seems 
to be suppressed in each digit. 
The specimen upon which a dissection was made reveals 
that the distal end of the tibio-fibula is enlarged, and that the 
astragalus and calcaneum are suppressed as such, or, rather, 
that their vestiges are fused with the distal tarsals into one 
mass in which the astragalus alone is demarcated by a ridge. 
The frogs were supplied by a dealer who can give no more 
certain information than that they were collected within 
20 miles of the London radius. 
XXII.—On a small Collection of Reptiles and Batrachians 
made by Mr. Goodfellow in E. Bolivia (1918-19). By 
Joan B. Procter, F'.Z.S8. 
THIs collection, made in Esperanza, EK. Bolivia, though small, 
included an extremely rare lizard—Ophiognomon trisanale— 
and a new species of the genus Hyla, which I have named 
after its discoverer, Mr. Goodfellow. The collection has been 
presented to the British Museum. 
REPTILIA. 
Telide. 
1. Ameiva surinamensis, Laur. 
2. Ophiognomon trisanale, Cope. 
1 specimen, 2. 
This extremely rare lizard is new to the collection of the 
British Museum, It is readily distinguished from the other 
two species of the genus by its hind limbs, which are half as 
long as the anal plates ; the fore limb ends in three terminal 
tubercles. 
Colour: light brown above, with three longitudinal dark 
lines; the two outer become darker and the vertebral lighter 
on the tail. Brown beneath, with two dark lateral bands. 
Tip of snout and chin white, also underside of end of tail. 
Hach scale beneath the tail dark brown, with a white centre. 
