342 MR. HENRY WALTER BATES ON PHASMIDE. 
each a broad, distinct, whitish vitta. The antennæ are elongate and setaceous, the base 
being thick, but not flattened and dilated. The thorax and abdomen are free from 
tubercles, the three apical dorsal segments of the latter, taken together, are equal in 
length to the sixth, and the extreme apex is somewhat narrowed and sinuated in the 
middle. The operculum is transformed into a scoop-shaped ovipositor projecting an inch 
beyond the dorsal tip of the abdomen, and is 1 inch and 7 lines in length altogether; 
the anal styles are very short, and taper to a point. The legs are short and strongly 
ridged, some of the ridges of the femora and tibiæ having on each joint one or two 
foliaceous spines; the tip of the anterior tibiæ and the tips of three basal joints of the 
tarsi are each produced externally into a rounded lobe. 
Hab. Caffraria, taken by M. Gerrard (Coll. W. W. Saunders, Esq... In the example described, the legs 
on the left side of the body are, as is often the case in Phasmidæ, reproduced limbs, and conse- 
quently much shorter and more feebly armed than those of the right side. 
ACANTHODERUS Movuortt, n. sp. Fem. Elongatus, subdepressus, obscurus, griseo- 
fuscus; capite oblongo, occipite linea elevata sex-dentata, vertice et fronte acute 
tuberculato ; antennis brevibus, filiformibus, articulo primo lato extus tuberculato, 
angulo exteriore apicali spinoso; prothorace tuberculato-rugoso ; mesothorace ver- 
rucoso, linea mediana elevata, lateribus suleatis; metathorace lineis curvatis dor- 
salibus ; abdomine supra inæquali, lateribus parallelis, linea duplici dorsali, segmentis 
tertio quartoque medio bituberculatis, penultimo postice valde elevato, terminali 
apice lato verrucoso; sterno tuberculato, metasterno paulo dilatato marginibus 
articulatis ; pedibus brevibus, validis, suleatis, femoribus posticis supra spinis fo- 
liaceis tribus.—Long. corp. 14”; anten. 44"; mesothor. 31"; metath. 22"; lat. 
corp. 12", 
Closely allied to Acanthoderus Oileus, Westw., an inhabitant of the island of Java, 
differing chiefly in the shape of the terminal dorsal segment of the abdomen and the 
armature of the hind thighs. The single example is a female pupa, as is the case with 
the only known specimen of 4. Oileus; but the great similarity between the pupæ and 
adult insects in this genus renders the description of the one state applicable to the 
other. 
Elongate, of nearly equal breadth throughout ; dingy brown. Head oblong; occiput 
with a curved, slightly raised line bearing six or eight short spines or pointed tubercles ; 
vertex and forehead rugose and armed with two lines of similar spines converging 
towards the occiput ; eyes moderately prominent. Antenne short, filiform ; basal joint 
oblong, flattened, sides tuberculate, lateral anterior angle produced into a spine. Thorax 
rugose; pronotum warty; mesonotum with a raised dorsal line, a row of tubercles on 
each side, and two ridges with corresponding grooves running near to each lateral 
margin, hind edge in the middle with two obtuse tubercles; metanotum with two 
curved raised dorsal lines on each of its divisions. Abdomen a little narrower than the 
thorax, surface rough, the lateral portion of each segment with two oblique raised lines, 
the spaces between which are punctured, middle of each segment with two curved raised 
lines which, in the third and fourth, terminate in obtuse tubercles; penultimate seg 
pa " 
