104 Mr. A. G. Butler on new Species of: Coerostris. 
when dry silvery white, nearly square, but expanded laterally 
and depressed dorsally behind the caput; central oculiferous 
tubercle very prominent; eyes black, forming a short trape- 
zium, the posterior pair being slightly larger than the ante- 
rior, a little wider apart than the latter, the two pairs sepa- 
rated from one another by an interval about equal to that 
between the two eyes of the anterior pair; lateral tubercle 
transverse, the eyes small, especially the posterior ones; a 
small lateral tubercle behind the eyes on each side, and two 
mammoid tubercles near the back of the caput. Abdomen 
elongate, pentagonal, conically excised at the back, golden 
brown, with a broad sericeous white belt spotted with brown 
occupying the anterior surface, extending into the anterior 
lateral processes, between which it is crossed by a streak of 
golden brown, behind which it contracts, is again crossed by 
a brown spot, and then terminates abruptly at about the 
centre of the dorsal surface; six conical tubercles, in pairs, 
arranged across the anterior surface, and a little behind them 
two long lateral, slightly compressed and obliquely ascend- 
ing subcylindrical processes, one on each side, their apices 
feebly bituberculate ; a small, very acute, central tubercle be- 
tween and a little more forward than these two; two conical 
tubercles placed laterally halfway between the lateral pro- 
cesses and the extremity of the abdomen, their anterior half 
golden brown, and their posterior half white, and between and 
beyond these in the dorsal region a pale irregular band in 
continuation of the central longitudinal belt ; ventral surface 
whity brown, with a broad blackish central belt behind the 
black epigyne, bounded on each side by three conspicuous 
white spots; falces piceous, with a few silvery white hairs to- 
wards their bases ; movable claw tipped with castaneous; six 
teeth on each side, of which the first and fourth pairs are 
much the largest. Legs and palpi above setose, somewhat 
flattened, but less so than in most species, castaneous red, 
marbled with stramineous; tarsi banded in the centre with 
white and tipped with blackish, below smooth shining reddish 
castaneous, cylindrical ; relative length, as usual, 1, 2, 4, 3; 
maxilla and labium blackish, with pale golden-brown fringes 
and pale olivaceous anterior borders ; pectoral shield scutiform, 
truncated in front, imperfectly heptagonal. Length (including 
cephalothorax) 11 millim., of lateral anterior abdominal pro- 
cesses 2 millim, 
East coast of Madagascar. 
_ Of this beautiful though not very large species we have 
three female examples, all of which, when dry, exhibit pre- 
cisely the same pattern and coloration. Another species 
