OCR Text |
Show 646 MR. A. D. MICHAEL ON THE [Dec. 1, UROPODA COCCINEA, n. sp.1 (Plate XLIX. figs. 1-1/.) 2 o* millim. millim. Length, about "78 '75 Greatest breadth, about.. "58 '51 This species somewhat resembles Uropoda festiva, Berlese, from Paraguay and, less closely, U. lamellosa of the same author (ex Canestr ini). Colour deep crimson in living specimens, after death this fades to a reddish brown or sometimes to a yellowish brown. Texture very rough and dull. Shape nearly elliptical, but with the dorsal plate projecting over the rostrum as a narrow plate bent sharply downward and slightly bifid at the distal end. From the rostral projection a thin undulated lamiua runs along each side of the body ; it is slightly translucent, widest anteriorly, finely granulated and striated, and strongly bent downward between the second and third pair of legs. Above and within this lamina are two rough and dark, projecting, concentric, chitinous ridges, the inner considerably above the outer; between them is a broad, almost concave, finely granulated band widest at the sides. Within the inner ridge is a plain space slightly granulated, then the back rises sharply from each side toward the median line, which, however, is not an edge or ridge, but is rounded. The raised portion is divided by a deep, irregular, transverse sulcatum about two thirds of the way back, which, however, does not reach the median line ; thus the two parts of the raised centre are joined by a broad longitudinal joining-piece. The raised parts are not smooth, but each has a very slightly raised space occupying its central portion; the anterior of these is somewhat seven-lobed and the posterior more four-lobed ; both are indistinctly marked out and covered by raised, rough, dark broken ridges and lumps, all very irregular and never quite alike in two specimens or on the two sides of the same specimen ; amongst these markings six great rounded pieces, which border and project into the transverse sulcation, are much the strongest and darkest. Between all these markings the chitin is granulated but more finely. There are not any hairs on the body. Mandibles (fig. 1 b) very minute, those of male without the pointed spear-like end usual in the genus; each arm of the chela simply bidentate. Palpus with two large spines on the basal, and one on the penultimate joint, besides numerous smaller spines and hairs ; one hair on the terminal joint is very large. Epistome (fig. 1 c) long and very pointed, with a few spines near the middle. Hypo-stome (maxillary lip) (fig. 1/) with the two sides (maxillae) not fused, the outer part of each (galea of Megnin) of the ordinary type, the inner part (lacinia) a dense brush of long fine hairs. Epipharynx (fig. 1 d) triangular, fringed and strewn with fine short hairs. This 1 If Prof. Berlese's genus of " Trachyuropoda " be adopted, this species should be included in it. |