MR. HENRY WALTER BATES ON PHASMIDJE. 355 
tubercle in the middle of its posterior portion, the rest of the body and legs are unarmed. 
The antennæ are setaceous, slender, and of about the same length as the body. 
Hab. Tondano, Celebes (Wallace). One example ( 9), Coll. W. W. Saunders, Esq. 
NECROSCIA STYLIGERA. Fam. Major, cylindrica, griseo-brunnea, pallida, fusco vix nebu- 
losa ; alarum area postica hyalina, paulo fuliginosa ; mesothorace lineari, supra lineis 
vel rugis longitudinalibus instructo; capite quadrato, supra plano, oculis prominen- 
tibus ; antennis setaceis, elongatis; pedibus subgracilibus, inermibus ; abdominis seg- 
mento dorsali ultimo angustato, apice inciso ; operculo in stylum acutissimum longe 
ultra apicem dorsalem prolongato.—Long. corp. 3” 8” ; anten. 2" 10 ; mesothor. 
8” ; abdom. 1” 9'" 4-42"" —9" 14”; operculi 9” ; tegmin. 3”; alee 2". (Pl. XLV. f. 1.) 
The species in the female sex (the only one known) is distinguished by the peculiar 
form of the genital operculum, which is $ of an inch in length and very narrow and 
horny, tapering into a very sharp, needle-like point ; the segment which constitutes -the 
operculum, instead of forming a semitubular or boat-shaped duct, appears like a solid 
compressed spine, owing to the coalescence above of its up-turned edges. The insect 
otherwise has nothing remarkable, being very similar in shape and proportions of body 
and limbs to N.FJanus; its colour is throughout of a pallid greyish brown, faintly 
marbled with darker brown, except the membrane of the wings, which is semitrans- 
parent and slightly smoky. The mesothorax is longitudinally wrinkled, the antennæ 
are very slender, the tegmina are short and broad, with the central elevation not very 
prominent. : 
Hab. Sula Islands (A: R. Wallace). One example (9), Coll. W. W. Saunders, Esq. 
NECROsCIA MUSTEA. Mas. Cylindriea, gracilis, pallide brunnea; tegminibus et alarum 
area costali viridibus, membrana hyalina, fusco perparum tincta; capite suborbi- 
culari ; mesothorace granulato; abdomine apice clavato ; stylis analibus paulo elon- 
gatis, curvatis, apice subincrassatis ; tegminibus carina mediana conico-elevata, basi _ 
macula elongata, albida; pedibus elongatis; femoribus tibiisque partim viridibus ; 
antennis longissimis.— Long. corp. 2" 1"; anten. 2" 6” ; mesothor. 51"; abdom. 
11”+3”=1" 2”; tegmin. 12"; ale 1" 13". (Pl XLV. f. 8.) 
The head is short, and rounded behind the eyes, and not plane above, with very 
prominent eyes and no ocelli. The antenn: are slender and greatly elongated, their 
colour a uniform brown. The prothorax is narrowed posteriorly; the mesothorax 
is slender and linear, and its surface has a number of distinct granulations; the colour 
of head, thorax, and abdomen, in the faded insect, is brown; the legs are partly brown 
and partly green ; so that the insect is possibly green in the living state. The three 
terminal dorsal segments are dilated, and the genital segments are strongly tumid, and 
reach nearly to the tip of the abdomen; the anal styles project much beyond the apex 
of the abdomen, and are slightly curved upwards and thickened at their tips. The teg- 
mina are oblong and obliquely truncated, their carina rises into à moderate but acute 
elevation in the middle, and between the elevation and the base there is a whitish 
streak, the rest of the surface, like the costal area of the wings, being of a clear light 
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