| OCR Text |
Show 652 MR. A. D. MICHAEL ON THE [Dec. 1, tooth. There is a single small tooth just behind this. Movable arm nearly straight on the inner edge, with a large, strongly-curved, terminal tooth, and a smaller recurved one a short distance behind it. This arm has a long, slender, round, and undulated accessory piece on its outer side, which projects considerably beyond the rest of the chela. Epistome (fig. 7 b) rounded, serrated with small teeth. The dorsal surface is set with smallish, spine-like hairs, at almost regular intervals (about 25 to the millimetre). The under surface of the female has the plates arranged similarly to those of Lcelaps cuneifer. The legs are sharply bent at the femora, which makes the measurements of them rather imperfect, they are also much curved ; the second and fourth pairs are considerably thicker than the first and third, especially in the male. The tarsi of these legs in the male end in a curious human-foot-like turn, most marked in the fourth leg. The femora of these two legs have two somewhat wedge-shaped hairs on their outer side, the other hairs are mostly fine spines. No apophyses to any leg ; all legs terminated by claws and caruncles. Hab. Found in the nests of Camponotus herculeanus (probably race ligniperdus), near Innsbruck, Tyrol. Rather common. L^LAPS ACUTA, n. sp. (Plate L. figs. 8-8 b.) 2 6 millim. millim. Length, about "71 '56 Greatest breadth, about "46 '32 Length of legs, 1st pair, about. . "62 '52 „ 2nd „ „ . . "42 -36 „ 3rd „ „ .. -40 -37 „ 4th „ „ .. -70 '61 Colour lightish chestnut. Texture fully chitinized, highly polished. With a highish power and a strong light it is seen that the dorsal surface is marked out by very fine lines into irregular, mostly hexagonal or pentagonal, divisions averaging about 25 to the millimetre across the body, and about 50 to the millimetre in an antero-posterior direction. No other markings. Shape rather narrow anteriorly, more truncated or rounded posteriorly ; the sides markedly curved, widest a little in front of the middle. Moderately arched on the dorsal surface. Mandibles of the male (fig. 8 a) very singular ; fixed arm of the chela of the ordinary type, rather straight, with a short, sharp, recurved termination, two other teeth not large. The movable arm is much the larger, nearly twice as long as the fixed arm, and much broader; it has a large and a small tooth, near together, about the middle, and a long and sharp upwardly curved end ; what appears to be a small channel or duct runs almost its whole length in the interior. No accessory piece. Epistome (fig. 8 b) rounded, dentate, the middle teeth considerably the longest. The dorsal surface is set |
