128 ON NEW GENERA AND SPECIES OF ARENEIDEA. [Jan. 21, 



The caput is produced like that of S. testudo, but enlarges a little at 

 the extremity, and is similarly concealed beneath the abdomen ; just 

 beneath the eyes is a blunt nose-like prominence, easily visible both 

 from the front and laterally ; this prominence is a strong and distin- 

 guishing specific character. The eyes are more unequal in size than 

 in the former species, those of the fore central pair being much the 

 largest. 



The legs are shorter but relatively the same as in S. testudo, and 

 their colour is pale brownish yellow, in the female annulated with 

 dark yellow-brown. 



The abdomen is whitish yellow a good deal suffused with brown ; it 

 wants the silvery lustre of 8. testudo, and is covered more or less with 

 round brownish shallow pock-marks ; its surface is also thinly clothed 

 with short hairs ; and there is a largish somewhat lyre-shaped brownish 

 patch in the centre of the hinder portion. 



The palpi are short and strong ; the digital joints are large and oval 

 in form, with a strong indentation at the base on the outer side, and 

 their convex sides are directed towards each other ; the radial and 

 cubital joints appeared to be very nearly of the same length ; the 

 palpal organs are simple, and, as far as they could be seen, consisted 

 of two or three simple corneous lobes. 



An adult male and female of this species were received from 

 Cevlon, from Mr. Thwaites, at the same time as the former one. 



LIST OF SPECIES, WITH REFERENCES TO PAGE, PLATE, 

 AND FIGrUKES. 



Tetrablemma medioculatum. (Cambr.)i Ceylon, p. 114, Plate XII. fig. 1. 

 Pachypus macleayi (id.), ibid., p. 116, Plate XII. fig. 2. 

 Labdaeus monastoides (id.), Rio Grande, p. 118, Plate XII. fig. 3. 

 Thomisus prosper (id.), hab. ign., p. 119, Plate XIII. fig. 4. 



ojyportunus (id.), Ceylon, p. 120, Plate XIII. fig. 5. 



Amycle forticeps (id.), ibid., p. 122, Plate XIII. fig. 6. 

 Pkoroncidia thwaitesii (id.), ibid., p. 123. 



brevispinota (id.), ibid., p. 124, Plate XIV. fig. 7. 



septemaculeata (id.), ibid., p. 124, Plate XIV. fig. 8. 



trispinosa (id.), ibid., p. 125, Plate XIV. fig. 9. 



Stegosoma testudo (id.), ibid., p. 126, Plate XIV. fig. 10. 

 nasutum (id.), ibid., p. 127, Plate XIV. fig. 1 1. 



DESCRIPTION OF THE PLATES. 



Plate XII. 



Fig. 1. Tetrablemma medioculatum (Cambr.), <?. 



a, figure of Spider, magnified ; b, profile of ditto, with legs and palpi 

 truncated ; c, underside, without legs and palpi ; d. abdomen, from 

 behind ; e, eyes, from above and behind ; f, left palpus, from beneath 

 and behind ; g, right palpus, from beneath and in front ; /*, natural 

 length of Spider. 

 2. Pachypvs madeayi (Cambr.), $ & <J> • 



a, Spider, magnified ; 6, ditto in profile ; c, underside of abdomen ; d, 

 cephalothorax and falces from the front ; e, underside showing 

 maxilla 1 , labium, and sternum ; /, leg of first pair ; g, tarsus of legs 

 of fourth pair ; h, portion of leg of first pair, showing fringes of 

 hairs; k, tarsus of leg of first pair; m, palpus of <J ; n, natural 

 length of Spider. 



