176 Mr. J. O. Westwood's Observations 



anterior, the two middle eyes being much wider apart. There is 

 also an impression on each side of the cephalo-thorax, above the 

 base of the third pair of legs, as well as some slighter ones running 

 towards each lateral anterior angle. 1 he chelicerae are very strong, 

 very much polished above at the base, but very rugose, with sharp 

 short points and hairs on the apical half; the extremity is slightly 

 produced within and rough ; the hook is very acute, and falls, 

 when at rest, into a groove armed at the sides with about six 

 pairs of acute short tubercles, gradually diminishing to the tip. 

 The maxillae are slightly produced on the inside, where they are 

 very hairy and armed with many small pointed rugosities; the 

 palpi are long and pediform, the first joint has a transverse ele- 

 vation across the middle on the inside, which gives it the ap- 

 pearance of a distinct joint ; the second joint is very much 

 compressed and bent, and is the longest of all the joints ; the next 

 is short ; the fourth twice as long as the preceding, compressed, 

 broader, and armed at the edges with hairs and minute but strong 

 pectinations ; as is also the fifth joint, which is much shorter and 

 gradually narrowed to the tip, where it is armed with a simple 

 single unguis, having a minute tooth at the base. The first and 

 second pairs of legs are very similar in their structure to the 

 palpi, except that the fifth joint, which corresponds with the 

 fourth joint of the palpi, is succeeded by two joints agreeing 

 unitedly in shape and armature with the fifth joint of the palpi, 

 but terminated by two ungues, each of which has a strong tooth 

 near the middle. The third pair of legs, on the contrary, is of a 

 structure quite unlike the preceding, being very robust, the third 

 joint being very much thickened and swollen beneath, the fourth, 

 fifth and sixth joints being especially thickened at the tips, in no 

 wise flattened but armed with strong short acute tubercles, as is 

 also the terminal joint, which is armed at the tip with two ungues 

 agreeing in structure with those of the fore-legs. The hind pair 

 of feet is also different in its structure from any of the others, 

 being more regularly cylindrical and less powerfully armed than 

 the third pair; the terminal joints especially are more slender, but 

 the ungues are similar to those of the other feet. All the legs 

 have the terminal joint thickly clothed with short hairs, but these 

 do not prevent either the short acute tubercles or the ungues 

 from being seen. The sternal plate is somewhat oval, flat, and 

 highly polished, its anterior part having the labium (languette, 

 Latrielle), attached to it, which is distinct, horny, semi-ovate, 

 hairy and obtuse in front; this fits exactly between the base of the 



