CALAMARIA PRAKKEÌ. 253 
d. 131—1—*®, total length 24cm, length of tail 4 cm, 
e. All, » » 26cm., » > 9° 22 em, 
vie WARE, > » 235¢m., » » » 2tem. 
Though the six specimens forming this series slightly 
differ among themselves, they still agree in so many res- 
pects, that they must be taken to belong to the same 
species. The above-mentioned slight points of difference, 
to which I shall refer when describing the species more 
fully, throw a peculiar light on the value of such qualities 
as are often taken for specific differences in the identifi- 
cation of the species. 
Rostral as high as broad, clearly visible from above, 
frontal hexagonal, its length nearly 1} times as great as 
its breadth, shorter than the parietalia, its anterior angle 
obtuse, its posterior angle acute (in specimen c the pos- 
terior angle also is obtuse, whilst the length of its fron- 
tal exceeds its breadth only very little). One praeocalar 
and one postocular. Five upper labials, the third and the 
fourth entering the eye, the fifth largest, the first small- 
est (except in specimen a where the first upper labial is 
at least as large as the second one). The mental in con- 
tact with the anterior chin-shields. No azygos shield be- 
tween the 4 chin-shields. Tail short, though not so short 
as in C. lumbricoidea, the tip of the tail obtuse with a 
conical scale at the end. 
Upper parts dark brown with a strongly pronounced 
glossy bluish shine. A light coloured beaded coloration on 
both sides along the belly down to the anal shield. This 
coloration is formed by the presence of a light spot on 
the scales of the outer row, and of a dark spot on either 
side in the outer angle of the ventrals. 
In specimen e this beaded coloration begins immediately 
behind the head, in the 5 other specimens the scales of 
the outer row just behind the head are quite white, so 
that the row of beads is interrupted on that place; in the 
specimens a, d and f this beaded coloration appears close 
behind the head on the second row of scales, a light spot 
INotes from the Leyden Museum, Vol. XV. 
