Monographic List of Gasteracantha. 155 
6. G. globulata. 
Plectana glohulata, Walckenaer, Apt. 2, p. 151 
(1837). 
" Java and Sumatra," Walckenaer ; Malacca, Wallace. 
B.M. 
Sub-genus Actinacantha, Simon. 
7. G. Blackwallii. 
Gasteracantha Blackwallii, Keyserling, Sitzungs- 
ber. der Isis zu Dresden, p. <oo\ pi. 1, fig. 1 (1863, 
edit. 1864). 
" Madagascar," Kei/serling. 
8. G. sororna, n. sp. PL IV. fig. 15. 
Female ; length of abdomen 3 h lines ; breadth at widest 
part, excluding spines, 4 lines : entire length 5 lines ; 
posterior lateral spines 3^ lines ; anterior ^ a line ; of 
posterior margin | of a line. 
Cephalothorax as usual; abdomen subrotundate, with 
eight unequal angles, and six acute divergent spines ; two 
on anterior lateral angle shortest, directed obliquely for- 
wards ; two, seven times as long and robust, on posterior 
lateral angle, directed obliquely backwards and upAvards ; 
two, short, on posterior margin, horizontal and widely 
divergent. 
Cephalothorax dull black, slightly pilose, with anterior 
edge slenderly castaneous ; falces and legs pitchy ; abdomen 
brownish-testaceous ; four central and sixteen marginal 
imj^ressed brown spots ; spines blue-black, rugose ; ventral 
surface same colour as above, rugose, transversely wrinkled 
across the central area, and coarsely punctured at the 
sides. 
Madras, Jerdon. 1 specimen. B.M. 
Nearly allied to G. Blackwallii of Keyserling. 
9. G. helva ( ? Lepelletieri). 
Gasteracantha helva, Blackwall, Ann. and Mag. 
Nat. Hist. S. 3, voh 14, p. 42 (1864). 
? Epeira Lepelletier, Guerin, Enc. Meth. 10, 
p. 764. 
Plectana Lepelletieri, Walckenaer, Apt. 2, p. 156, 
n. 9 (1837). 
"^ Plectana prcBtextata, Doleschall, Acta Soc. Scient. 
Indo-NederL 5, pi. 8, fig. 4 ; pi. 11, fig. 6 (1859). 
Siam, Bowring, S^c, B.M. 
