OCR Text |
Show 402 MR. R. I. rOCOCK OX SOME [Dec. 2, the spines on the base of the inner side of the femur of the palp are much smaller, and the tibia is armed internally with longer hair-tipped papilla?. Measurements in mm. :-( <S ) Total length 7-5 ; palpus 5 ; 1st leg 8, 2nd 13, 3rd 9, 4th 12. Loc. Grahamstown in S. Africa (Dr. Schdnland). This species at least differs from A. obtectum and A. lutens Loman, from Knysna, in having the ocular tubercle rounded on the summit instead of angularly acuminate, and also in the armature, at least of the femur of the palp, and apparently of the first leg, since Loman gives the presence of spines beneath the femur of this appendage as a generic feature. With A. asperatum Karsch, which was probably from Port Elizabeth, where Mr. I. L. Dr&ge resides, it is not possible to make any comparison. Genus L a r if u g a Loman. P h a l a x g iu m r u g o su m Guer. (Icon. Reg. Anim. iii. Arachn. p. 12, pi. iv. fig. 4 (nec 4«-46), 1829-1843*; also Gervais, Ins. Apt. iii. p. 128, 1844), the type of which was in Keyserling's Collection and is now preserved in the British Museum, belongs to the genus Larifuga Loman, but seems to approach rather nearer the genus Adceum than does the typical species L. tveberi, since the sternum is apparently less sharply angular and therefore not so markedly pentagonal in shape. It further differs in that the ocular tubercle is not apically acuminate, but bears 4-5 tubercles on the summit; the dorsal scute is granular, with smooth transverse segmental areas separated by bands of granules arranged in 2-3 rows, each of the segments being marked by at least one pah of small submedian tubercles, those of the last being in line with a transverse row of coarse tubercles, while those of the first are almost lost amid the granules that lie behind the ocular tubercle-the tubercles, in fact, are practically the same in number and position as in L. weberi; anteriorly the carapace has one median porrect tooth and five large subvertical teeth above the anterior border. The three anterior free terga have a row of coarse tubercles, the first of them having as well a row of granules ; the anal tergite has smaller, more scattered tubercles; there is a transverse row of granules on the sterna. Coxa? beset with scattered granules. The basal segment of the mandible with a distal row of fine tubercular teeth, the external the smallest. Trochanter of palp with three strong spines below ; femur with about five, the two basal the largest but unequal. 1 In Guerin's original description, reference is made to pi. iv. fig. 4 b, which purports to represent the ventral surface of the specimen numbered 4. It is evident, however, that this drawing of the ventral surface is taken from some species of Phalangiida? and not from the specimen shown in fig. 4. This is clearly proved by the difference in the size of the palpi of the two. Fig. 4 b probably represents the underside of the European Phalangium, tbe ocular tubercle of which is shown by fig. 4 a. |