i 29 



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 3 are very high 

 and broad, usually with a truncated distal angle; P x , though much smaller 

 than P.„ bears similar lateral processes on its segments (northeastern 



C e y 1 o n) erinacea 



b" no modification of the edges of the ossicles of the IBr series or of the first 

 few brachials; ossicles of P 2 with very slight, those of P : with no, lateral 



processes (PTranquebar, India) imbricata 



a" the distal edges of the brachials in the proximal third of the arm are not everted 

 b 1 P a 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, P l more or less 

 resembles P 2 , and P 3 , though also smaller, may resemble P., (northe r n 



Australia and the Aru Islands) carpenteri 



b 3 P„, though markedly longer and stouter than P 1 or P g , is much less enlarged, 



the segments beyond the third being as long as, or longer than, broad 



c 1 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 1 the 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 1 the lateral processes on the segments of the proximal pinnules are 

 moderately developed (Ceylon, and eastward to the Malay 

 Archipelago, New Guinea and the Philip pi nes) . . serripinna v ) 

 e 3 the lateral processes on the segments of the proximal pinnules are 

 greatly reduced, almost obsolete, usually bearing a tuft of small 

 spines 



f 1 proximal pinnules not carinate; i 7 — 22 (usually 19 — 20) cirrus seg- 

 ments (sou theas tern Africa and Cargados Carajos) occidentalis 



1) Synonyms pulchella and concinna A. II. Clark. 



SinOG^-EXTEDlTIE XIII'. ' 17 



