1879.] REV. O. P. CAMBRIDGE ON NEW ARANEIDEA. 289 



the abdomen is deep blackish brown, marked and spotted with 

 yellow. 



Hab. Cambodia. 



Gasteracantha claveata, sp. n. (Plate XXVII. fig. 17) 



This Spider is closely allied to Gasteracantha (Plectana) clavatrix, 

 Walck., resembling it nearly in size and in the curious enlargement 

 at the extremities of the intermediate spines ; but the greater length 

 and rather more slender shaft, and the still more club-like form of 

 the bulbous termination of these spines in the present Spider, lead 

 me to believe it to be of a distinct species. 



In four examples before me of G. clavatrix, the upperside of the 

 abdomen has a distinct, but irregular, narrow, submarginal, black 

 band or stripe from the intermediate spines to the fore extremity, 

 including the sigilla ; I can detect no trace of this band in the pre- 

 sent Spider. The sigilla are small, 10 in front and 8 behind, and 

 of a red-brown hue, both the upper and under surface of the abdo- 

 men being of a uniform brownish clay-colour (though no doubt much 

 faded by the drying of the specimen). 



Hab. Celebes. 



Gasteracantha simoni, sp. n. (Plate XXVII. fig. 18.) 



Length of the transverse diameter of the adult female, exclusive 

 of the spines, 4 lines ; longitudinal diameter 2f lines. 



This Spider is nearly allied to Gasteracantha crucigera, Bradley, 

 but differs in its markings as well as in the length and strength of 

 its spines. 



The abdomen is of a subpentagonal form, almost subtriangular, 

 truncated at the apex. The intermediate spines are moderately long, 

 strong, very slightly curved and a very little directed backwards, 

 and placed at each corner of the hinder part of the abdomen ; close 

 in front of each is one of the anterior spines ; these are very minute, 

 but about the same size as the posterior ones. The colour of the 

 abdomen is yellow ; the sigilla are normal in number, of a deep red- 

 brown colour, and the posterior pair of the four central ones are the 

 largest ; this is quite abnormal so far as I am aware. The spines are 

 rich deep red-brown. The underside of the abdomen is yellowish, 

 rugulose, thickly studded -with very small reddish-brown circular 

 tubercles, and also somewhat clouded with brown. 



The cephalothorax is dark reddish brown, clothed with short, 

 grey, adpressed hairs. 



The legs are yellow-brown, lightest on the undersides of the femora ; 

 the tibiae and metatarsi are darkest, a small part of the basal portion 

 of the metatarsi and tarsi being yellow, giving a somewhat annulated 

 appearance to those joints. 



Hab. Cape York. 



Gasteracantha acrosomoides, sp. n. (Plate XXVII. fig. 19.) 

 Length of the greatest transverse diameter of the adult female, 

 Proc. Zool. Soc— 1879, No. XIX. 19 



