94 -DIPLOPODA. 
c. Stouter; segments very finely and closely punctured and rugulose ; anal 
tergal plate ending behind in a distinct tuberculiform process defined by a 
decided depression . 2. 1. ew ew ee ee et 
c'. Thinner; segments more coarsely punctured and rugose; anal tergal plate 
typotopyge. 
not ending behind in a distinct tuberculiform process . . . . « « « chiriquensis. 
6‘. Inferior portion of first tergal plate not abruptly inflected, not distinctly ridged, 
less deeply sulcate ; anal sternal plate more distinctly angled. . . . . « palinensis. 
a’. Pores beginning upon the sixth segment. 
d. Inferior portion of the first tergal plate strongly inflected and defined above oye a 
ridge ending in a tuberculiform prominence . . leapensis. 
d’. Inferior portion of the first tergal plate at most only lightly inflected and not 
strongly ridged. 
e. Number of segments 77 to 79; length varying from about 80 to 90 mm. ; 
sculpturing of the segments intermediate between that of the two 
following species. . . . . . . we ee ew ee ee ee mule nsis. 
. Number of segments varying from about 50 to 60; length (3) about 
50 mm. 
f. Sculpturing of the dorsal portion of the posterior half of the segments 
coarse, consisting of punctures and anastomosing longitudinal ridges 
and punctures; the area just in front of the sulcus merely punctured 
and sharply defined by the fineness of its sculpturing from the posterior 
area behind the sulcus . . 2. 1. ee ee ee ew ee ee Stratus. 
jf’. Sculpturing of the dorsal portion of the segments consisting merely of 
punctures; the area immediately in front of the suleus and the whole 
area behind it alike in sculpturing . 2. . 2. ee 6 ee ee ee) 6Cordovanus. 
In the following table an attempt has been made to show how the males of various 
species in which the copulatory apparatus has been examined and figured may be 
separated from each other :— 
a. Anterior lamina of coleopod with its distal extremity projecting forwards as a 
rounded prominence ; the laminate expansion of the phallopod small and leaving 
the seminal style (flagellum) to a great extent exposed . . . . - « « confragosus. 
a’. Anterior lamina of coleopod with its distal extremity not turned forwards, 
simply rounded, truncate or emarginate at the apex, the laminate expansion of 
the phallopod large and overiapping the seminal style. 
6. Distal extremity of posterior lamina running out externally into a long and 
sharp spiniform process, which is scarcely defined by any basal constriction 
from the part of the lamina which bears it. 
ce. Distal extremity of the posterior lamina of the coleopod crescentic, its upper 
edge evenly concave, its lower evenly convex ; ramus of upcurled portion 
of phallopod comparatively straight . . . . . . . . «© « « « « chirigquensis. 
c’. Distal extremity of the posterior lamina with strongly geniculate infero- 
internal angle, the inner and lower edges not forming an evenly convex 
curve; the spiniform process stouter; upcurled ramus of phallopod spirally 
twisted . 2 1 6 wee ew ee we we ew we ee. Striatulus. 
