Monographic List of G aster acantha. 165 
two on posterior lateral margins five times as long, robust, 
obtuse, with suddenly acuminate apex, nearly straight and 
horizontal ; two on posterior margin, acute, nearly parallel, 
depressed. 
Cephalothorax black, with castaneous anterior margin, 
clothed at the sides with short testaceous hairs ; falces and 
m axillae black ; sternum and legs pitchy ; labium pitchy, 
margined with castaneous ; abdomen olivaceous -brown, 
delicately rugose at the margins, hind margin brownish- 
testaceous ; spines pitchy, rugose ; ventral surface brown, 
dirty testaceous behind, and irrorated with blackish gra- 
nules ; submarginal impressed spots black ; conical projec- 
tion brown. 
Sumatra, Sir Stamford Raffles. B.M. 
Nearly allied to G. fornicata, but certainly distinct. 
44. G. varia. 
G aster acantha varia, Thorell, Ofvers. Vetensk. 
Akad. Forhandl. xvi. p. 301, n. 3 (1859, edit. 
1860); Eug. Resa, Zool. Arachn. p. 14 (1868). 
Hab.— 'i 
Seems to belong to the G. fornicata group. 
45. G. frontata. 
Gasteracantha frontata, Blackwall, Ann. & Mag. 
Nat. Hist. S. 3, vol. 14, p. 40 (1864). 
" E. India," Blackwall. 
Seems, from the desci'iption, very like a minute speci- 
men of G. fornicata. 
46. G. Hebridisia, n. sp. 
Female; length of abdomen 2| lines; breadth at widest 
part, excluding spines, 6i lines; entire length 3i lines; 
posterior lateral spines 1^ line, anterior § of a line ; of 
posterior margin 1 line. 
Cephalothorax normal ; abdomen transversely oblongo- 
ovate (nearly form of G. Westringii), Avith six angles 
bearing the spines ; two on anterior lateral margin acute, 
short, directed slightly forwards ; two on posterior lateral 
margin twice as long, robust, obtuse, with terminal tooth, 
directed slightly downwards and backwards ; and two 
short, acute and divergent, on posterior margin. 
Cephalothorax, falces, maxillae, and legs, black, clothed 
with testaceous hairs ; labium brown ; abdomen smooth, 
ochraceous, with four central and seventeen marginal 
TRANS. ENT. SOC. 1873. — PART II. (MAY.) N 
