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Show 440 REV. o. p. C A M B R I D G E O N [June 16, the difference between 4 and 1 being greater than usual; they are furnished with fine hairs only. The palpi are moderately long, but not very strong, and furnished with hairs; the cubital joint is not very long, but longer than the radial, which, however, is stronger, and is produced at its extremity, rather on the inner side, into a strong, moderately long, curved, pointed apophysis, its point directed outwards over the base of the digital joint; the radial joint is also rather prominent behind ; the digital joint is large, of ordinary form ; and the palpal organs are prominent, highly developed, and complex, with spiny processes ; and at their extremity is a not very long, circularly curved, sharp-pointed, tapering spine. The falces are not strong, but moderate in length, and divergent towards their extremities. The abdomen is of a rather oblong-oval form, and projects slightly over the base of the cephalothorax ; it is not very convex above, and is thinly clothed with hairs. An adult female accompanied the above male, and resembled it in colours and general appearance ; but the position of the eyes differed, (though no more than is ordinarily the case with Spiders whose cepha-lothoraces in the male sex present abnormal developments), and the clypeus projected forwards. I am inclined to think that it is the female of the male here described. The genital aperture is, as usual, characteristic. Another example of the male was of a darker and richer colour, the cephalothorax, sternum, and femora of the legs being of a brightish red, and the abdomen quite black. The examples above referred to were contained in the collection received from Mr. J. H. Emerton, by whom they were found-the two former (male and female) on a fence at Providence, R. I., the latter (male) under leaves at Cambridge, Mass., in December 1873. This species belongs to the group containing E. cuspidata (Bl.), and is very distinct from either of its European forms. ERIGONE INDIRECTA, sp. n. (Plate LV. fig. 10.) Adult male, length 1| line. In form and general structure this Spider is very nearly allied to the foregoing species (E. directa), the palpi and palpal organs also being very similar; but it may at once be distinguished by its larger size and the very decided differences of colouring, as well as by the eminence between the eyes being slightly more erect, though a little bent forwards and a little stouter ; the apex of the caput also is rather larger and less drawn out; the summit of the eminence is furnished thickly with short bristles, arranged in two longitudinal rows directed away from each other, looking (when seen from the front) as if parted like hair on the human head; there are also some other bristles on the back of the eminence, directed backwards and rather downwards. The whole of the caput, nearly as far back as the thoracic junction, is of a shining jet-black colour; the thorax bright orange-red ; the palpi, falces, maxilla, and labium are very dark, but not quite |