MR. HENRY WALTER BATES ON PHASMIDÆ. 347 
PLATYCRANIA ALPHEUS, Westwood, Cat. Phasmidæ, Brit. Mus. p. 112, pl. iv. fig. 29. 
The examples described by Professor Westwood eame from Ceylon and the Philippines. 
In Mr. Saunders's collection there are three specimens of the female, obtained by Mr. 
Wallace in various islands of the eastern part of the Malay archipelago, namely Goram, 
Gilolo and New Guinea. They all agree pretty well with the description and figure 
quoted above, but appear to resemble more the Philippine examples than those from 
Ceylon, in the stronger tuberculation of the mesonotum. All three differ greatly in the 
length of the tegmina and wings—organs which vary much in dimensions in many of the 
larger species of Phasmidæ. The examples which served Professor Westwood for his 
description appear to have had unusually short organs of flight; for he gives the length 
of the tegmina as one third shorter than the metanotum, and states that the wings, when 
closed, extend only to the middle of the second abdominal segment. These relative 
lengths are shorter than in any of the three examples from the Malay archipelago. Thus 
in the shortest-winged example (that from Gilolo) the tegmina reach the end of the me- 
tanotum, and the wings the middle of the third abdominal segment ; in the Goram example 
the organs are a little longer; and in the New Guinea one the tegmina attain the middle 
of the first abdominal segment, and the wings the end of the fourth. The New Guinea 
specimen differs also in colour from the two others, being brown instead of green, and 
having brown tegmina and costal area of wings, with yellow nervures; but in this cha- 
racter it seems to be intermediate between the green examples and those described by 
Professor Westwood. 
There is a male specimen from Amboyna, also in Mr. Saunders's collection, which ap- 
pears to belong to this species; for although much resembling the male of Platycrania 
edulis, it differs in being much smaller and in wanting the rosy tint at the base of the 
wings. The following is a short description of it :— 
Male. Elongate, slender, greenish-yellow (doubtless light green in life). Head oblong, 
convex, smooth; antennæ (about 26-jointed) filiform, twice the length of those of 
the female. Mesonotum covered with conical tubercles. Abdomen smooth, three 
terminal segments of equal length, apical dorsal segment narrowed behind; anal 
styles filiform, obtuse. Tegmina oblong-oval, and, with the costal area of wings, 
greenish-yellow, membranous portion of latter ochreous, longitudinal nervures 
darker. Legs moderately stout, four posterior thighs with three rows of small 
tubercles along their under surface.— Long. corp. 3” 1"; anten. 1" 6"; mesothor. 6” ; 
abdom. 1" 10”. Amboyna (Wallace). 
ACROPHYLLA TESSELLATA, Westwood, Catal. Phasmidæ Brit. Mus. p. 115, pl. xxxv. 
fig. 1 (3), fig. 2 (2). 
Three examples (two females and one male) of this elegant species in Mr. Saunders's col- 
lection agree remarkably well with the description and figures of Professor Westwood 
(made from a single pair) with the exception of the pe: which refers to the anal pro- 
cesses of the male. These are described as of ** minute size," and in the figures appear not 
to project beyond the apex of the abdomen. It is possible that in Professor Westwood's 
example the organs may have been mutilated ; for in the male specimen before me they 
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