272 PROCEEDINGS OF THE ACADEMY OF ! iMaj, 



ated well posterior and but little farther separated thau the posterior 

 pair. 



lu many respects these specimens resemble the figures of Har- 

 mothoe scabra (Oersted), especially those of the scales given by 

 Wire'n.- The anterior elytra of Polynoa {Harmotho'e) islandica 

 Hensen also approach the character of these, but the entire absence 

 of those belonging to the posterior region renders it impossible to 

 determine if they possess the peculiar ragged appendages present 

 in Hensen' s species, in which also the first elytron is reniform. 



IMcCormick Bay, P. R. E. 



Harmothoe (Eunoa) trunoata sp. nov. 



This well-marked species is known only from a single imperfect 

 specimen, consisting of the head with twenty-four somites. The 

 elytra, dorsal cirri, all but one tentacular cirrus and the tentacles 

 are missing. Viewed from beneath the body is truncate anteriorly, 

 widest at X or VI, and with nearly parallel sides, narrowing very 

 gently posteriorly. The third and fourth somites together form a 

 broad swollen area which bounds the mouth posteriorly. Rather 

 prominent but short, projecting nephridial papillae begin at VI, 

 and continue to XXIV at least. Scars for the attachment of 

 elytra are present on the usual somites back to XXIII. 



The head is slightly broader thau long, with a well-marked 

 median anterior fissure and slightly produced, obtusely pointed 

 peaks. A small posterior nuchal lobe is inseparably connected with 

 the head, but by analogy probably belongs to the folloAving somite. 

 The two pairs of eyes are black, circular and of equal size. The 

 posterior are close to the posterior margin, and are separated by a 

 space of five times their diameter. The anterior are placed later- 

 ally on the widest region of the head, and distant about twice their 

 diameter from the tips of the cephalic peaks. There is nothing 

 peculiar in the place of origin of the tentacles. The palpi are 

 about five times the length of the head, with a swollen basal half, 

 a slender distal half and a short terminal filament. 



In the typical foot the neuropodium has nearly straight outlines 

 terminating at a nearly right angle, with a projecting acicular lobe. 

 The aciculum projects but little and its end is suddeny contracted 

 in a peculiar way. The notopodium lies a little to the anterior of 



^ Vega-Expeditionena Vetemkapliga lakttagelser, II. 



