166 JOURNAL, BOMBAY NATURAL HIST, SOCIETY, Vol. XXVIII, 
Female unknown. A single male specimen from Amara; XII, 1917. 
The palearctic members of the same group of Lithobius having rounded angles 
of tergites 9, 11 and 13, ocelli few disposed in rows, and the anal legs without 
coxolateral spine, without sexual structure and with a single claw, are: crassipes 
L. K., q@ruginosus L. K., fallax Mural., ignotus Mural., and (possibly ?) 
argensis Att. With none of them does the above specimen agree entirely, 
and nothing is known of the legs of argensis. Therefore, rather than create a 
new name for a single specimen, it is deemed wiser to ascribe it to the nearest 
related form, L. eruginosus, in spite of the difference noticed in the spinal 
armature of the hind legs. 
STRONGYLOSOMA PERSICUM Humbert & Saussure, 1869. 
The sterno-pleural suture is a curved ridge sharpened on the second segment 
and gradually rounded backwards ; it disappears after the 10th segment. ‘The 
dorsal furrow of the lateral keels is straight on the non- poriferous segments and 
sinuate on the others. 
The vulvar aperture of the 3rd segment is very wide, rounded laterally ; the 
posterior margin is almost straight and moderately erected. Sternum of the 
second pair of legs poorly developed, very low and not as wide as the lateral 
expansions of the coxe. The posterior surface of the latter is hollowed at the 
base so as to cause the distal half to appear swollen. 
Vulvar invaginations shallow, scarcely deep enough to conceal the vulve 
and hardly distinct from one another. When at rest the vulve have the oper- 
culum (') turned upwards and the ridge outwards, the posterior end of the 
mound filling the aperture of the 3rd segment. Vulve (fig, 1 and 2) not much 
longer than deep. Operculum smaller than the mound, excised apically ; the 
distal angles are produced and bear a particularly long and thick macrocheta 
pointing backwards. Mound with its posterior end abruptly truncate. Outer 
valve shorter and higher than the inner, the latter being much lower than 
jong. The valves are not fused posteriorly but the upper angles are produced 
internally into hooks, the concavities of which face each other. Surface 
of the valves with few and rather short sctz; no macrochete. The apodema 
is sinuous, it shows no superficial ornaments (as seen in Polydesmus) and seems 
destitute of internal appendages. No trace of a shield could be noticed. 
(‘) The description of vulve having so far been entirely neglected and no English 
terms having been applied to the different parts of these organs, it is pro- 
posed to use , provisionally the following :— 
operculum == (Vopercule) the smallest, plate-like part ‘of the vulva, theo- 
retically considered to be anterior ; 
mound =(la bourse) the largest and theoretically the posterior part, 
the anterior truncate surface of which is covered by the 
operculum ; 
valves =(les valves) inner and outer chitinized slopes of the mound 
bearing sete and often macrochete ; 
ridge =(le cimier) apical space left between the valves, beginning 
immediately behind the anterior troncature and extending 
more or less backwards ; 
apodema =(lapodéme) gutter-shaped chitinous thickening extending 
longitudinally below the ridge and communicating with 
the latter by means of a 
slit =(la fente de l’apodéme) ; 
diverticula =(les diverticules apodématiques) differently shaped append- 
ages of the apodematic gutter, erroneously considered as 
glands by some authors ; 
The operculum articulates with the mound by means of 
hinges. =(les fourches) ; 
chield =(le gorgerin) accessory posterior plate which is often missing 
and is eventually replaced by some expansion of the valves. 
The French terms are those used by Brolemann and Lichtenstein, ‘“‘ Les 
vulves des Diplopodes,” Arch. Zool. exper. gen., LVIII, 4, 1919. 
