I 2y 
produced and usually bear prominent tubercles or blunt spines; the anterior 
angle of the axillary is usually produced dorsalward, or bears three prom- 
inent tubercles; the lateral processes on the segments of P,, arc very high 
and broad, usually with a truncated distal angle; F,, though much smaller 
than P., bears similar lateral processes on its segments (northeastern 
Ceylon) ermacea 
\y no modification of the edges of the ossicles of the IBr series or of the first 
few brachials; ossicles of P„ with very slight, those of P, with no, lateral 
processes (? Tra a cju e b a r , I n di a) iindricata 
a" the distal edges of the brachials in the proximal third of the arm are not everted 
b* Pj very stout, composed of very short segments of which not more than 
three or four of the terminal are longer than broad, bearing very long lateral 
processes; these lateral processes along the outer ridge of the pinnule are 
uniform in character, narrowly triangular with a blunt apex, separated from 
each other by spaces of approximately their own size and shape, in the 
outer half of the pinnule being more than half the diameter of the segments 
which bear them in height ; along the distal ridge the lateral processes on 
the first four or five segments are high keels with the crest parallel to the 
longitudinal axis of the pinnule, beyond that point resembling the processes 
of the outer crest; though much smaller and weaker, \\ more or less 
resembles P.^, and P.,, though also smaller, may resemble P, (n o r t h e r n 
A u s t r a 1 i a a n d t h e A r u 1 s 1 a n d s) carpenter i 
b^ Po, though markedly longer and stouter than P^ or P.., is mucli less enlarged, 
the segments beyond the third being as long as, or longer than, broad 
c^ the segments of the enlarged lower pinnules bear lateral processes con- 
sisting of a rounded-triangular fin-like production of the prismatic ridges 
near the distal ends 
d' thfe lateral processes on the segments of the proximal pinnules are 
extravagantly developed (R e d S e a) electrae 
d- the lateral processes on the segments of the proximal pinnules are 
not extravagantly -developed 
e' the lateral processes on the segments of the proximal pinnules are 
moderately developed (Ceylon, and eastward to the Malay 
Archipelago, New Guinea and the Philippines) . . serripinna^) 
e- the lateral processes on the segments of the proximal pinnules are 
greatly reduced, almost obsolete, usually bearing a tuft of small 
spines 
f proximal pinnules not carinate; i 7 — 22 (usually 19 — 20) cirrus seg- 
ments (southeastern Africa and Cargados Carajos) occidcntalis 
l) Synonyms puUhclla and cominiin A. 11. Clark. 
SIROGA-EXI'EUITIE XI,IIi5. '7 
