| OCR Text |
Show 3fi0 REV. O. P. CAMBRIDGE ON NEW SPIDERS. [June 5, side, and rounded on the outer extremity, showing a considerable constriction about the middle of the outer side. Labium about half the lengtb of the maxillae, somewhat obtusely pointed at the apex, and narrower at the base than at the middle. Sternum elongate-oval, pointed behind and hollow-truncate before. Abdomen short, broad, round-oval, of a flattened form, rather truncate before, and fitting well up to the base of the cephalothorax. CASTTJROPODA SIGILLATA, sp. n. (Plate XXXVII. fig. 5.) Adult female, length 2-f lines. The colour of the cephalothorax, falces, legs, and palpi is a rich dark mahogany-brown. The surface of the cephalothorax and falces has a roughened appearance, being granulose or punctuose; the latter, as well as the sides and hinder part of the former, are furnished with short bristly hairs; the fore margin of the caput has also a single row of short strong prominent bristles. The height of the clypeus is only equal to the diameter of one of the fore-central eyes. The maxilla, labium, and sternum, as well as the basal joints of the legs, are yellowish brown. The eyes of the hind-central and fore-central pairs are respectively nearer together than each is to the lateral eye of its row on tbe same side. The abdomen is of a dark greenish olive-brown hue, deepest on the upperside, which is of a somewhat coriaceous nature, and where there are in a transverse line on the middle two large oval rusty-brown seal-like markings, near together, and each marked in the centre with one of the two posterior of the five normal Thomisid impressed spots or markings, and of a deeper red-brown colour; the other three of these normal spots form a triangle immediately in front of the sigilliform markings, the apex directed forwards and close to the fore extremity of the abdomen. A pale yellowish streak or line runs from the apex of this triangle to a little way beyond the posterior impressed spots, and is succeeded by several short transverse pale curved lines, from the ends of each of which similar lines run parallel to each other round the sides and outer portion of the upperside of the abdomen. In some parts these lines are formed by small pale dots. The spinners are short and of a pale dull yellowish hue. The abdomen is thinly clothed with short hairs. The whole Spider has a very flattened form. An adult and an immature female, as well as an immature male, were sent to me some years ago from Ceylon by the late Mr. G. H. K. Thwaites. - The size and peculiar form of the anterior pair of legs make this Spider a very remarkable one. This character, together with its other structural features, have induced me to base a new genus upon it, though it has some strong points of affinity to the preceding species Cyrsillus drassiformis (p. 358, antea). |
