104 P^ECILASMA KjEMPFERI. 



abruptly truncated, crested, not deeply imbedded in the 

 membrane of the peduncle. 



Peduncle, barely as long as the capitulum, apparently 

 (for specimens dry and much shrunk) narrow, surrounded 

 by rings or folds of thicker yellowish membrane, of which 

 the upper ones retain moderately long spines ; low down 

 these rings become confluent ; whole surface finely dotted, 

 dots largest on the rings. 



Mouth. — Labrum highly bullate in the upper part, with 

 a row of teeth on the crest ; mandibles with four teeth, 

 the fourth close to the inferior apex, which is very little 

 developed, sometimes making the fourth tooth appear 

 simply bifid. Maxillae with two large spines on the 

 upper angle, beneath which there is a large depression, 

 bearing one rather long and thick, and four short and 

 thick, spines ; inferior upraised part with a double row of 

 longer and thinner spines. 



Cirri. — Posterior cirri with segments bearing five pairs 

 of spines, of which the lowest pair is very minute ; inter- 

 mediate spines minute ; spines of the dorsal tuft thin, 

 of nearly equal size ; segments not at all protuberant, 

 elongated. First cirrus, standing far separated from the 

 second (as in Scalpellum), with its nearly equal rami 

 rather above half as long as those of the second cirrus. 

 Second cirrus with anterior ramus not thicker, and 

 scarcely more thickly clothed with spines, than the pos- 

 terior ramus, but shorter than it by three or four seg- 

 ments ; the spines not forming a very thick brush on the 

 anterior ramus. Both rami of third cirrus with a longi- 

 tudinal roAV of minute spines, parallel to the main pairs. 

 Between the bases of the pedicels of the first pair of cirri, 

 there are two closely approximate, conical flattened pro- 

 tuberances, like the single one to be described in Ibla, 



Caudal Appendages, about one third of the length of 

 the pedicel of the sixth cirrus, with some moderately long 

 and strong spines at the end, and down the whole outer 

 sides. 



Ova, much pointed. Penis, hairy. 



