67 
1921-22.] Myriapods from Mesopotamia and N.W. Persia. 
mesomerite and a short solenomerite (fig. 10). The mesomerite (if.) is a 
broad and flattened piece abruptly notched externally before the summit (n.) ; 
the latter is again slightly expanded, with its apical margin excised, its 
posterior surface showing a shallow depression. From the posterior surface 
of the mesomerite rises a triangular hyaline lamella directed backwards (m.). 
In its normal position the end of the mesomerite is pressed against the 
posterior surface of the peltogonapod, the process of which fits tightly in the 
notch of the outer margin of the mesomerite. The mesomerite is fused 
with the corresponding tracheal stalk (t.), no other trace of division being 
present but a deep depression of the outer surface of the stalk, representing 
the once existing stigmata. 
The solenomerite (S.) does not exceed two-thirds of the height of the 
mesomerite. It sits on a horse-shoe-shaped coxal base (c., fig. 10), which 
is open in front, low outside and behind, but broadens internally into a 
transverse, squared process (c., fig. 11). The main body of the solenomerite 
(dotted in both figs. 10 and 11) is strongly chitinised, rapidly tapering 
towards the end, and conspicuously bent forwards. Both the internal and 
the external rims of this hook, from top to bottom, are expanded into 
parallel, delicate, and hyaline, veil-like lamellae (m'.), the outer of which 
meets the triangular lamella of the mesomerite. Noteworthy also are a 
chitinised dimple at the back of the hook ; two backward pointing spines, 
one behind the other, at a short distance from the apex ; and, next to 
these, a long trumpet-like process (o.) turned backwards, ending proximally 
in a chitinised apodema seen (fig. 10) to wind its way down in the main 
body of the organ. From the presence of such an apodema might be 
inferred the existence of a seminal groove — a point which, however, had 
to be left unascertained. 
The female is unknown. A single male from : “ Taki Girreh, N.W. 
Persia, under stone on hillside (limestone), 14 i. 1919.” 
Calyptophyllum integrum, n. sp. 
$ : length unknown; diameter, 3 mm.; number of segments uncertain, 
the only specimen being broken (59 segments are preserved) ; 3 segments 
apodous. Adult. 
All particulars as in G. obvolvatum, except that the size is decidedly 
larger, that the sculpturing of the segments is somewhat less deep, and that 
the distance from the pore to the posterior margin covers 9|- to lOJ of the 
sulcal interspaces. Furthermore, the anal scale has its posterior margin 
completely rounded. 
