OCR Text |
Show 216 REV. O. P. CAMBRIDGE ON [Mar. 16, caput; and within the excavation at its larger end, just behind the hind lateral eye, is a shining, silvery, roundish spot; the clypeus is full and prominent, its height appearing slightly to exceed half that of the facial space ; a few short hairs directed downwards are disposed on the space between the fore and hind central pairs of eyes. The eyes are very minute, but disposed in the usual four pairs, and seated on black spots; those of the upper or hind central pair appear to be the smallest of the eight; they are seated just in front of the summit of the cleft which divides the two lobes of the caput, and each is about an eye's diameter on one side of a dark, yellow-brown, longitudinal line running along the bottom of the cleft; the other three pairs of eyes are in a nearly straight transverse line at the upper part of the lower segment of the caput; those of the fore central pair are rather larger than those of the hind central, contiguous to each other, dark-coloured, and forming a line not quite as long as those of that pair. The eyes of each lateral pair are placed obliquely, but not quite contiguous to each other, the fore laterals being the largest of the eight, and each is separated by about a diameter's distance from the eye nearest to it of the fore central pair; the distance between the fore and hind central pairs is about equal to that from between the eyes of one lateral pair to between those of the other ; looked at in front the fore laterals and fore centrals form a straight transverse line. The legs are moderate in length and strength ; their relative length apparently 4, 1, 2, 3, though the difference between those of the first and fourth pairs is exceedingly small; they are furnished with hairs; and each has one or two short prominent dark bristles on the uppersides. The palpi are rather short and slender ; the cubital is longer but less strong than the radial joint: this latter has its fore extremity on the upperside rather expanded, with two small prominent points, or the fore extremity may be described as having its upper margin emarginated; the digital joint is small, and the palpal organs prominent and well-developed, but not very complex, with a minute curved, dark, filiform tapering spine at their extremity. The maxilla, labium, and sternum present no unusual feature either in form or structure. The falces are moderate in length and tolerably strong; they are inclined backwards to the labium, and are armed with a few small sharp teeth towards the extremity on their inner margins. The abdomen is of ordinary form, and projects (but not greatly, over the base of the cephalothorax; it is of a dull brownish yellow colour, a large oval patch at the hinder extremity on the upper-side being pale luteous (this may, however, be accidental) and thinly clothed with hairs. Although allied to E. bifrons (Bl.), it may easily be distinguished by the greater development and wider spread of the ovate lobes of the caput, as well as by a totally different position of the eyes, which arc much smaller, and by a different colouring of the whole |