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Show 1893.] SPIDERS FROM ST. YINCENT, WEST INDIES. 701 femur, tibia, and a ring at the distal end of the metatarsus rufous, the remainder being pale ; in the female the rufous is not so dark as in the male. The other legs are pale. The palpus of the male is black covered with white hairs, excepting the tarsus, which is pale. The palpus of the female is all pale. In both sexes the falces are dark rufous and glossy. MARPTUSA MELANOGNATHA, H. Lucas, Webb and Berthelot's Hist. Nat. des lies Canaries, tome ii. p. 29, pi. vii. fig. 4. A cosmopolitan species. ANOKA, gen. nov. The cephalothorax is not high and is not much longer than wide; the sides widen out gradually from the lateral eyes to their widest point, which is behind the dorsal eyes ; they slant outward more widely in the thoracic than in the cephalic part. The cephalic part is inclined forward; the thoracic is level for two-thirds of its length and then falls rather steeply. The quadrangle of the eyes is one-third wider than long, is a little wider behind than in front, and occupies two-fifths of the cephalothorax. The first row of eyes is straight, with the middle eyes subtouching and less than twice as large as the lateral, which are a little separated from them. The second row is about halfway between the first and third rows. The third row is narrower than the cephalothorax at that place, the eyes being a little farther from each other than from the lateral borders. Abdomen long and slender. W e have species of Anoka from various parts of the United States, from Jamaica, St. Vincent, Barbados, and N e w Granada. They all resemble each other very strongly, even the patterns and colours being often reproduced. The relative length of the legs is 1, 4, 2, 3 or 1,4, 3, 2 in both sexes. The males are more slender than the females and have the first legs much longer and stouter than the others and, usually, dark coloured, the other legs being pale. The males also, in all the species except A. mitrata and an unpublished species from Jamaica, have the falces long and horizontal; in the Jamaica species they are oblique, and mitrata has the falces vertical and the first legs pale. The mouth-parts are always dark coloured. Anoka is related to Icius and Menemerus, but in Icius the eyes of the first row are larger, the cephalothorax has the sides more nearly parallel and the thoracic part differently shaped (see drawing), and the abdomen is not so long and slender. In Menemerus the sides dilate suddenly behind the third row of eyes, the thoracic part slants more steeply from the dorsal eyes and is wider behind, although not so wide as in Icius, and the cephalic part is more steeply inclined. ANOKA YERNALIS, sp. nov. (Plate LXII. figs. 9-9 d.) 3. Length 4-8. Length of cephalothorax 1*8; width of cephalothorax 1*5. |