Mr. A. G. Butler on new Spectes of Cuerostris. 101 
about the middle of the dorsal surface; the usual six im- 
pressed dots are present. Legs piceous, flattened and grooved 
above, cylindrical below, setose, relative length 1, 2, 4, 3; 
palpi piceous, flattened, setose; falces blackish, very large, 
with double series of five teeth, of which the fourth in each 
series (placed at the inner angle) is decidedly the largest ; 
maxille and labium piceous, with testaceous anterior borders, 
of the normal shape ; pectoral shield heptagonal, sinuated in 
front ; epigyne black. Length (including cephalothorax) 21 
millim., of abdomen alone 18, of cephalothorax (including 
falces) from base 6}, of falces 4, first pair of legs 26, second 
23, third 16, fourth 21 millim. 
Betsileo Country, Madagascar. 
In the form of its legs this species seems to agree with 
Walckenaer’s Epetra imperialis, which, unless it be taken 
from a dried and much distorted example, can hardly be the 
LH. sexcuspidata of Fabricius. 
The black dots on the borders of the abdomen probably re- 
present the absent ocelli. 
2. Cerostris retorta, sp. nov. (Pl. VI. figs. 6, 6 a, 60.) 
?. Cephalothorax mahogany-red, nearly square, laterally 
-arched and dorsally shelving behind the caput; the latter 
more than twice as broad as long, clothed with whitish and 
yellowish pilosity ; oculiferous tubercles very prominent, the 
central one rather higher behind than in front ; the eyes small, 
forming a short trapezium ; lateral tubercles slightly oblique, 
less so than in some of the species; the four tubercles of the 
hinder series very long, especially the lateral ones, which are 
like obtuse spines. Abdomen testaceous, with the anterior pro- 
tuberances buft-coloured ; anterior surface buff-coloured, crossed 
by four longitudinal brown lines, two from the bases of the pro- 
tuberances and two central ; sides and posterior border whitish ; 
anterior margin with six tubercles in pairs, two others placed 
-behind the first and last upon the base of the protuberances, 
the latter very long, reflexed, flattened in front, tapering, 
bifid at apex, and with two internal lateral acute tubercles, 
one near the base and the other beyond the middle; the an- 
terior surface of the abdomen is regularly triplicate, and 
the lateral and posterior surfaces less regularly plicate; 
ventral surface, as usual, flattened; blackish piceous, with 
testaceous margins. Legs whitish, banded with brown; the 
tarsi and metatarsi flattened above and longitudinally grooved, 
otherwise cylindrical, setose, tapering ; relative length 1, 2, 4, 
3; palpi castaneous, clothed with yellowish bristles, flattened ; 
falces castaneous, with blackish culm and movable claw, 
