52 
Annals or the Transvaal Museum. 
with a black streak anteriorly and a somewhat broader one posteriorly, 
the latter continuous with a deep black band which runs along the inferior 
surface of the tarsus and over the soles and toes : a black streak under 
the forearm. 
Length of largest specimen 46 mm. from snout to vent. 
Nine examples, adults and juveniles, from Folohy (Hersehell-Cliauvin) : 
type, a male, in the Transvaal Museum, No. 958. 886-888, 947, 950, 
957-959, 961. 
M. ULCEROSUS, Bttgr. (2 and 6). Eight examples, from the eastern 
region': localities Folohy, Ambilo, Ambatoharanana. 
Our specimens combine the characters of M . ulcerosus with those 
of M. betsileanus , Blgr. (7, p. 460) especially in respect to the palmation 
of the toes which, though the webbing is usually to the extent of two- 
thirds to three-quarters, can in one specimen (No. 986) be described as 
half- webbed. Further, specimen No. 986 (a juvenile male) has the 
tympanum as large as the eye. 
Though this series whep examined in a purely mechanical way might 
be divided between M. ulcerosus and M. betsileanus , we believe that our 
specimens really belong to one species only. 
We notice that a small outer metatarsal tubercle is present, and that 
the tibio-tarsal joint of the hind limb reaches the nostril. 985-992. 
M. BIPORUS. Blgr. (8). Ten examples from Folohy. In young speci- 
mens of our series the tympanum may be only one-half the diameter 
of the eye, and the tibio-tarsal joint of the adpressed hind limb may reach 
between the eye and the nostril. 993-1002. 
M. GUTTULATUS, Blgr. Nineteen examples from the eastern region : 
localities Ambohidratrimo, Analamazotra, and Folohy. This species was 
found in streams in the forests. Our largest specimen measures 105 mm. 
from snout to vent. 1003-1006, 1041-1055. 
M. FLAVICRUS, Blgr.? ( 8 ). Two examples from the eastern region; 
both are ill-preserved and have been assigned to this species with some 
doubt. 1007, 1008. 
M. OPIPARIS, Per ( 15 ). Three examples ; locality Folohy. Two 
are juveniles, one indeed being without vomerine teeth. The specimen 
which we presume to be an adult (length 30 * 5 mm. from snout 
to vent) does not entirely agree with Peracca’s description (p. 9), differ- 
ing therefrom in the following respects. The feet are slightly more 
than half-webbed : the discs of the fingers are comparatively large 
(according to the original description they are moderate in size): the three 
longitudinal folds which are said to be present on the back are not 
developed in this specimen, although indications of the lateral fold can 
be recognized. The nostril in our three specimens is nearer the tip of the 
snout than the eye. And lastly the inner metatarsal tubercle is not 
prominent. 1009-1011. 
M. ALBOFRENATUS, F. Miiller ? ( 14 ). Five examples from Folohy 
and Ambilo. We note that the feebly webbed feet of this species separates 
it from any known species of this genus except M. aerumnalis , Per., which 
is said to have a much larger tympanum. 1012-1016. 
M. GRANULATUS, Bttgr. ( 4 ). Five examples from Folohy. In two 
specimens the first finger is a trifle shorter than the second, and in these the 
disc of the first finger is smaller than that of the second. In both these 
specimens the tibio-tarsal joint of the adpressed hind limb reaches the 
end of the snout : the tympanum is fairly distinct and is about one-half 
