SPHARIODESMUS. 
ce. Apex of principal branch of phallopod, which is spatulate and widely rounded, 
bearing a pair of slender subspiniform processes ; the subsidiary thumb- 
hike branch broad, curved forwards and inwards, and arising from the inferior 
edge of the segment; rim of socket of phallopods elevated, but the crest 
dying away on each side on the sternal area; femur of first “8 without 
basal tooti-like process 
*, Apex of principal branch of phallopod simple ; ; subsidiary br anch arising on 
the upper side of the segment ; femur of first leg with basal prominence. 
d. Yibio-femoral segment of phallopod straight and subcylindrical, the 
principal branch attenuate, pointed ; subsidiary branch rising nearer the 
apex than the base of the segment; rim of socket of phallopod not 
elevated behind; process on femur of first leg low, the whole segment » 
only lightly curved Loe . - oe 8 
d'. Tibio-femoral segment very stout, strongly curved outwards, then inwards 
at the apex, which is spatulate and widely rounded ; subsidiary branch 
thinner and rising nearer the base of the segment than in the preceding 
species ; rim of socket of phallopod elevated all round posteriorly from 
the lateral tubercle ; first leg very thick with a long basal tooth-like 
process and a smaller process on the two succeeding segments . 
a‘, Tibio-femoral segment of phallopod variable in length and thickness, simple or 
divided apically, but with the subsidiary branch occurring in the species mentioned 
under a represented apparently by a more or less conical or short spiniform 
tooth, by a low eminence, or altogether absent. 
e. Apex of the phallopod distinctly bifid. 
f. Axis of tibio-femoral segment subcylindrical and nearly straight, the organ 
not markedly upcurled distally ; benind and on the inner side of the apex, 
which is soniewhat lamellar but pointed below, there arises a lougish slender 
hooked spiniform process ; femur of first leg modified ; sternum of seventh 
segment narrow; socket of phallopod raised into a semicircular crest just 
in front of the stigma and of the base of the legs Loe ee 
f'. Axis of tibio-femoral segment short or slender, but with a distinct upward 
curvature distally and no elongate hooked spiniform process. 
g. Tibio-femoral segment comparatively short and stout, the subsidiary 
branch comparatively large and nearer the base than the apex of the 
segment. 
h. Phallopod ending in two lobe-shaped processes ; femur of first leg with 
distinct basal prominence Loe ee . . 
h*. Phallopod ending in an antero-posteriorly compressed lamella and 
a slender somewhat spiniform process external to it; femur of first 
leg unmodified ; rim of socket of phallopod with semicircular crest 
in front of base of leg . soe ee ‘ . . 
g'. Tibio-femoral segment comparatively long and slender the subsidiary 
process either small or absent; the apex divided into two small subequa 
processes ; femur of first leg with basal process. 
BIOL. CENTR.-AMER., Diplop., October 1909. 
1 
prehensor. 
angustus. 
robustus. 
stilifer. 
neglectus. 
oniscus. 
1 
