ZENOMETRINAE 



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wider distally than at the base. The more distal segments are about as long as broad. 

 Their dorsal sides are raised into low keel-like protuberances highest near the end of 

 the segments, making them wider distally than proximally. The terminal claw is short 

 and the opposing spine small. 



The radials are nearly rectangular and fairly long, about half as long as broad 

 (Fig. 6 b). The distal half is half-cup shaped. In profile the proximal half makes only 



Fig. 6. Eumoiphometra aurora, a, cirrus, b, proximal part of a ray. c, fourth to tenth brachials and Pa. 



d, Pg from the side. All x 13. 



a slight angle with the dorsoventral axis but the distal half bends sharply outwards. 

 The costals are not quite so long as the radials; they are widely separated from each 

 other and are not deeply incised by the axillaries. The axillaries are slightly longer than 

 broad. The first and second brachials are of the shape shown in Fig. 6b\ the former are 

 widely separated. The distal edges of the radials, costals, axillaries and the first and 

 second brachials are raised into very fine spines. 



Syzygies occur between the third and fourth, ninth and tenth, and fourteenth and 

 fifteenth brachials, and thereafter with intervals of two brachials between eachsyzygial pair. 



The fifth to eighth brachials, between the first and second syzygies, are nearly 

 rectangular, about one-and-a-half times as broad as long (Fig. 6 c). Those between the 

 second and third syzygies are wedge-shaped and longer than broad. The more distal 

 brachials are longer on one side than the other, slightly longer than broad. The distal 

 edges of all the brachials beyond the first syzygy are faintly raised and produced into 

 short spines; they are most conspicuous on the distal brachials, but are much shorter 

 and less conspicuous than those of E. hirsuta. 



