440 rev. o. p. Cambridge on [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 pro- 

 minent, 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 fur- 

 nished 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 



