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Show 711 REV. O. P. CAMBRIDGE ON NEW ARANEIDEA. [Nov. 1, reddish-brown shining tubercles ; some of those on the fore side have long curved pale spine-like bristles issuing from them ; and probably similar ones had been rubbed off from the rest. Spinners short, and devoid of any specially distinguishing feature. A single female of this curious Spider was received from Mr. Thwaites in the Ceylon collection before mentioned ; it appears to belong to some hitherto uncharacterized genus, and to be of the family Thomisides. Although not quite adult, it had the appearance of being nearly full-grown ; nothing is known of its habits. Family MYRMECIDES. Nov. gen. APHANTOCHILUS (a priv. epaivw, to appear, and y/iXos, the lip). Characters of the Genus. - Cephalothorax long, broader in front than behind, divided into quasi-segments by strong constrictions, and armed with some longish pointed corneous projections; clypeus large, somewhat quadrate, and prominent. Abdomen short, broad, oval, united to the cephalothorax by a cylindrical pedicle. Eyes eight, small and unequal in size, situated in two quadrangular groups of four each; the groups widely separated from each other on the highest part of the caput. Legs moderately long and strong; relative length 4, 1, 2, 3, those of the first three pairs being very nearly, if not quite, equal in length ; each tarsus ends with two curved pectinated claws. Maxillee long, straight, and strong, very wide at their bases, the inner edges of which are contiguous, as also are their inner edges near their extremities; these are a little enlarged and rounded on their outer, and obliquely truncated on their inner sides. Labium obsolete. Sternum apparently duplicate; the fore one narrow, somewhat oblong-oval, deeply emarginate or indented on the edges opposite to the legs of the first three pairs, and terminating in a point between those of the third pair ; between this point and the coxae of the legs of the fourth pair (which are in contact with each other) is a very small second or rudimentary sternal plate, round, and quite separate from the fore one. APHANTOCHILUS ROGERSII, n. sp. (Plate XLIV. fig. 10.) Female adult, length 5 lines. The cephalothorax is more than double as long as it is broad, and strongly constricted in two places-behind the caput, and between the third and fourth pairs of legs; the caput is a little higher than the rest of the cephalothorax, and forms a sort of elevated transverse ridge, on the extremities of the highest part of which the eyes are placed ; these extremities are prolonged in a lateral direction on either side into a longish strong horn-like process pointed at its extremity, slightly curved and directed forwards; the centre of the thorax is |
