1891.] Zoology. 669 
tiles from Somali and Zanzibar" the author prefaces his descriptions 
with the following remarks : 
‘‘ The new collection of reptiles and batrachians reported in 1884 
from the Somali country and Zanzibar, by M. G. Revoil, is without 
doubt the most important of all those which this zealous traveler has 
sent to the museum during many excursions into regions at that time 
almost unknown. One of these collections was described many 
years ago by Professor L. Vaillant. This new one, richer in species, 
is distinguished by some specific types and interesting genera which 
appear to be new. Among these types we cite in the Lacertilian order 
Hemidactylus tropidolepis, the dorsal aspect of which is covered with 
unequal, keeled scales, and not with granulations, as appear upon many 
of the species of Hemidactylus, or with equal, smooth scales, as 
H. homeolepis ; an Eremias with nostril opened between four nasal 
plates, and with the dorsal scales keeled, which I have dedicated to Pro- 
fessor Alph. Milne-Edwards, Æ. edwardsii ; a new species of Agamo- 
don, 4. compressum, characterized by a compressed body and by 
having the lateral borders of the cephalic shields recurved. 
“ Besides the new species of Dasypeltis, of slender form, D. elongata, 
the Ophidians contain two Calamarians which we believe represent new 
genera, the one a relation of Elapomorphus, but without the malar 
or preorbital constitutes the genus Elaposchema, a name which 
will suggest its resemblance to Elaps; the other, slightly removed from 
Amblyodipsas, and to which I would give, on account of its size, the 
name Brachyophis, is especially remarkable for the presence of a true 
occipital plate behind the parietals. It seems proper to dedicate these 
two new species, Elaposchema vaillantii and Brachophis revoilii, respec- 
tively to M. Vaillant and M. Revoil. 
‘« Among the species already described, but which until now 
have remained in the museum we cite the following: Agamodon 
anguliceps Peters, Psammophis biseriatus Peters, and Chiromantis 
peterstt Boulenger ; the first is represented by nine specimens, and the 
last two each by two. 
“ In concluding this short introduction, we call attention to the fact 
that two of the new species of which we have spoken above are bur- 
rowers,—Agamodon compressum and Brachyophis revoilit. One readily 
believes that other types of similar habits of life, and which have 
hitherto escaped the researches of explorers, will be found to enrich 

16 On a Collection of Reptiles and Batrachians sent from Somali and Zanzibar By M.” 
G. Revoil. Memoires Publiés par la Société Philomatique à l' occasion du Centenaire 
de sa Fondation, 1788-1888. 
