182 On new Genera and Species of Araneidea. 



living spicier lias power to raise and depress or expand them as a 

 peacock does its train, and that when so expanded they assist 

 to sustain the spider in its leaps. The slightly projecting lateral 

 margins of the upper epidermis appear also to connect this 

 spider with Salticus volans (last described) ; and there is a general 

 similarity in the colouring of the two species : the upperside 

 of the abdomen in the present spider is broadly and trans- 

 versely banded with alternate and somewhat wavy bands of 

 scarlet maroon and brilliant emerald-green, changing to blue 

 with the different incidences of the light ; there are three bands 

 of the scarlet-maroon colour, and four of emerald, the foremost 

 and hindmost bands being of this latter colour; the under- 

 side is of a uniform brownish yellow, marked and spotted with 

 dark brown, and clothed with hoary hairs. 



Six examples of this interesting and lovely species were re- 

 ceived in 1864 from the Swan River, New South Wales. 



List of Spiders described. 



« 



Family Colophonides. 

 Colophon natalensis, n. sp., J&$, p. 170, Plate XVII. fig. 1. Natal. 



Family Agelenides ? 

 Mutusca mammosa, n. sp., c? , p. 173, Plate XVII. fig. 2. Sydney, Aus- 

 tralia. 



Family Gasteracanthides. 



Cahjdna jn-ospiciens, n. sp., d , p. 175, Plate XVII. fig. 3. Minas Geraes. 



Family Miagrammopides. 

 Miafframmopes Bradleyi, n. sp., 5 , p. 177. North Australia. 



Family Thomisides. 

 Amycle albomaculata, n. sp., d" & 5 , p. 178. North Australia. 



Family Salticides. 

 Salticus volans, n. sp., J, p. 178, Plate XVII. fig. 4. Sydney, New South 



Wales. 

 Salticus speciosus, n. sp., J, p. 180, Plate XVII. fig. 5. Swan River, New 

 South Wales. 



EXPLANATION OF PLATE XVII. 



Fig. 1. Colophon natalensis, J & $ : b, spider, enlarged ; a, ditto, in profile, 

 with legs truncated ; c, eyes, from ahove and behind ; d, under- 

 side, showing maxillse, labium, and spiracular orifices ; e, left 

 palpus, from outer side ; /, portion of digital joint with palpal 

 organs of right palpus, from the front and behind ; g, palpal 

 organs of left palpus, from beneath and in front ; h, leg of first 

 pair, $ ; k, m, portion of tarsus of first pair, showing tarsal 

 claws ; n, natural length of spider. 



Fig. 2. Mutusca inammosa, $ : a, spider, in profile, enlarged ; b, ditto, from 

 above ; c, eyes and falces ; d, maxilla? and labium ; e, under- 

 side of abdomen , f, right palpus, from outer side : g, cubital and 



