Cope.l 18^ [Dec. 19, 



the determination of its fauna is a point of considerable interest. Unfor- 

 tunately the number of species taken is small. The names are as follows : 



Cnemidophorus murinus D. and B. Specimens as large as the Amiva 

 surinamemis, No. 13,860. 



GoNiODACTYLXJs ALBOGULARis D. and B. No. 13,859. 



Var. I. Four specimens. A pale dorsal band bounded on each side with 

 a row of brown spots ; two rows of blackish spots on each side ; belly un- 

 spotted ; throat fointly lined. 



Var. II. One specimen. Brown above with a blackish collar pale edged 

 behind, which sends forwards a brown band to the eye. Above this a 

 short brown band from eye. Lips and throat with some brown speckles. 



Var. III. One specimen. Brown above ; a blue-black band along lips 

 to shoulder. A short blue-black inguinal longitudinal band ; below 

 dusky, except throat, which is very pale, but with faint lines spreading on 

 each side from a pale median band. 



VI. Nicaragua ; Mosen 



A small collection was sent to the National Museum by Lieut. J. F. 

 Moser, U. S. N. It contains the following species : 

 Dendrobates tinctorius Schneid. No. 13,736. 

 Dendrobates typographus Keferst. No. 13,738. 

 Agalychnis HELENA Cope, sp. nov. 



Head large and wide, muzzle short. Long diameter of eye a little less 

 than length of muzzle in front of it measured obliquely, or one-third 

 longer than muzzle measured axially, and entering width between ante- 

 rior canthi of eyes one and one-half times. Nostril nearly terminal ; can- 

 thus nostralis distinct concave. The tympanic membrane is not distinct, 

 and is a sub-vertical oval, two-thirds the long diameter of the eye. Inferior 

 palpebra with oblique sub-parallel white veins. The vomerine teeth are 

 in short series directed invvards and backwards from the anterior inner 

 angle of the large choaniE. Ostia pharyngea half as large as choanse. 

 Tongue large, wide and openly emarginate behind. The inner toes ot 

 both anterior and posterior feet are not opposable, and are furnished with 

 well developed discs. Both are shorter than the adjacent second digit respec- 

 tively. The fingers are one-fourth webbed, and the toes one-third webbed. 

 The heel of the extended leg reaches the end of the muzzle ; the closed 

 leg marks the end of the third toe with the knee. The width at the 

 sacrum is but a little more than half that of the head posteriorly. Skin 

 smooth above everywhere. Length of head and body, M. .030 ; width of 

 head posteriorly, .0115. Length of extended fore limb, .018 ; of extended 

 hind limb, .042. Of the latter, the foot measures .0175. of which the tar- 

 sus is .0085. 



The heel and the elbow present a dermal thickening at the apex ; the 

 inside of the elbow joint is also shortly webbed. 



The color in spirits is greenish cream color ; probably representing green, 

 yellow and purplish in life. The same color covers the external faces of 



