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Show 748 MR. R. I. POCOCK ON ETHIOPIAN SPIDERS. [June 15, Ischnocolus, Ausserer (Verh. z.-b. Wien, 1871, p. 184), represented by many species in the Mediterranean countries, differs from the two preceding in having no tibial spurs on the 1st leg in the male. It thus stands nearer to Miaschlstopus, but may be recognized by having all the tarsal scopulae divided ; the division in Mlaschlstopus being restricted to the 4th leg. Subfamily HARPACTIRIN^E, nov. Genus H A R P A C T I R A , Ausserer, Verh. z.-b. Wien, xxi. p. 203 (1871). H A R P A C T I R A TIGRINA, Ausserer, Verh. z.-b. Wien, xxv. p. 185 (1876). (Plate XLIII. fig. 5.) In the type and other examples of this species the upper row of notes on the mandible consists of 5 hairs, and the lower of about 10 which gradually decrease in length posteriorly and project internally away from the adjacent and spiniform setae. On the maxilla there are upwards of 30 notes, forming a thick cluster, those that lie nearest the suture being the largest, while internally and posteriorly they decrease in size and pass without interruption into the hairs of the oral fringe. The organ is present in the young, but less perfect in its development. For example, in a specimen from East London the carapace of which measures but 5 m m . long, that of the adult attaining to 25 mm., the bristles of the mandible constituting the lower series have not become separated off from tbe adjacent setae, though the upper series occupies the same position as in the adult; while on the maxilla only about a dozen of the notes are distinguishable. At this stage the feathery pad on the upper half of the outer surface of the mandible has not appeared; but it is fully formed and the organ complete in all its details in a half-grown specimen from the same locality, with the carapace 12 mm. long. This species seems to have an exceedingly wide range in Africa. The Museum has examples from the following localities:-Port Elizabeth (including the type and specimens presented by J. M. Leslie) ; Kleinpoort, Eastern Karroo (Anna Howarth); East London (H. A. Spencer) ; Osborn, Pondoland (T. W. Pocock); Kei Boad (Capt. Trevelyan) ; Matabeleland (H. M. Beddlngton); and Sheik Husein in Somaliland (Donaldson Smith), as well as others without special locality. Tbe occurrence of this form so far to the north as Somaliland is exceedingly remarkable. I have failed, however, to distinguish the single female specimen from that locality from Ausserer's type by any reliable character either of colour or structure. The twro examples from Pondoland differ from the type in having the legs shorter as compared with the carapace : the carapace for example is considerably longer than the tarsus and protarsus of the 4th as well as a little longer than the tibia, protarsus and tarsus of the 3rd and at least equal to those of the 4th ; whereas in the type and other |