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Show 76 DR. A. GUNTHER ON THE ZOOLOGICAL [Feb. 6, obliquely ; abdomen ovate, shining, piceous, with bronzy reflections, densely setose ; a dorsal longitudinal ill-defined carina, and on either side a series of about five punctures ; an apical white-tipped irregular orange spot; legs shining, piceous, setose ; proximal extremities of tibiae and the metatarsi slightly reddish ; maxillae and falces dark olivaceous; pectoral plate scutiform, dark olivaceous; ventral surface of abdomen olivaceous at the base, a central laterally excised large orange spot. Length 9 millims. ; relative length of legs 1, 4, 2, 3. Four examples, Charles Island. This species seems most nearly to approach L. formidabilis of Nicolet. Two of the examples are much paler than the type, their abdomens having a greyish appearance. 5. EPEIRA COOKSONII, n. sp. (Plate XIII. figs. 2, 2a, 2b, 2C.) 2 • Cephalothorax reddish tawny, with three (central and lateral) longitudinal brown stripes, elongate cordiform, truncated in front, nearly flat, with a deep depression behind the head ; eyes arranged on the front margin of the caput, the four central ones forming an elongate quadrangle upon a central prominence, the lateral pairs placed further back at the anterior angles of the cephalothorax, very small; abdomen velvety black, with a beautiful longitudinal sceptrelike band, and dotted lateral stripes, gold, the inner margins of the lateral stripes indicated by an interrupted sinuated golden line; legs reddish tawny, the distal extremities of the tibiae, metatarsi, and tarsi blackish, the femora and tibiae sprinkled with black bristles, the metatarsi and tarsi clothed with black hairs; palpi ochraceous, setose, with blackish terminal joint; falces mahogany-red, maxillae and labrum deep castaneous, bordered with ochraceous; pectoral plate subpyriform, pentagonal, piceous, with a longitudinal central testaceous streak ; ventral surface of abdomen velvety black, castaneous at the base, streaked at the sides with undulating lines of silvery hair ; four large central pale ochraceous spots, in the centre of which is a whitish spot; a red spot on each side of the region of the spinners. Length 16 millims. ; relative length of legs 1, 4, 2, 3. Nine examples, Charles Island ; six specimens, Albemarle Island. Var. abdomen olivaceous, markings whitish. One specimen, Albemarle Island. This beautiful species is most nearly allied to E. oaxacensis of Keyserling, the figure of which would almost answer for it; but the description of the coloration does not at all agree with it. 6. GASTERACANTHA INSULANA. (Plate XIII. figs. I, la, lb, lc.) Gasteracanthainsulana, Thorell, Ofvers.Veten.sk. Akad. Forhandl. xvi. p. 302. no. 8 (1859, edit. 1860); Eug. Resa, Zool. Arachn. p. 17 (1868). Seven specimens, Charles Island, one specimen, Albemarle Island. This very handsome species was originally described as from the Galapagos Islands. |