270 EEV. O. p. CAMBniDQE ON NEW SPIDERS. 



appear to resemble in number and position those of this family 

 in general. 



Family THEEIDIDES. 



Genus 'Pu.ouo-sciDiA{Westwood). 



Phokoncidia Thwaitesii, n. sp. PI. IX. figs. 17-22. 



5 . Length 2^ lines. 



Cephalothorax broad, round, and convex behind, elongate, elevated, and 

 prominent at caput ; colour dark shining brown-black. 



Eyes at extremity, and on sides, of prominence of caput ; four central 

 ones form a square rather broadest in front ; two on either side are 

 placed obliquely and (when cephalothorax is looked at in profile) on 

 a level with the two foremost eyes of central square j foremost eye 

 of each lateral pair very near that on its side which forms fore 

 corner of square ; thus on either side of fore part of prominence is a 

 slightly curved row of three eyes ; those of fore central pair are 

 largest. 



Legs. Relative length 1, 4, 2, 3 ; moderately long, slender ; those of 

 fourth pair rather shorter than those of first pair j and those of third 

 pair rather shortest; those of first pair, with tibise and tarsi of 

 of the rest black, furnished sparingly with hairs ; remaining joints 

 of second, third, and fourth pairs pale yellowish-brown. 



Palpi very short, slender ; similar in colour to the legs. 



Maxilla strong, moderate in length, slightly enlarged towards the 

 extremities, where they are rather obliquely truncate on outer 

 sides, inclined towards labium — which is broad, and circular at 

 apex. 



Falces short, moderately strong j sternum heart-shaped, truncate at 

 fore extremity. 



Abdomen, when looked at from above, subangular in front, broader 

 and truncate behind, convex above, conical beneath, spinners form- 

 ing apex of cone; cuticle corneous, similar to spiders of genus 

 Gasteracantha, &c. ; furnished with nine longish prominent black 

 spines, varying in relative length — two in front, one on either side, 

 slightly curved and pointing forwards and outwards; behind each 

 of these is another straight one, pointing upwards and outwards ; 

 behind again, at each hind angle of abdomen, is another, slightly 

 curved, pointing outwards ; these are longest of the nine ; and 

 midway between them is a straight one directed backwards and 

 slightly upwards; beneath that, at each hind angle, is another, 

 slightly curved, pointing backwards and downwards ; colour of abdo- 

 men reddish yellow; minutely punctuose, the punctures forming a 

 somewhat peculiar and regular pattern on upperside ; at the fore 

 extremity of the upperside is a black subtriangular patch. 



