532 PROCEEDINGS OF THE ACADEMY OF [July, 



very large and dense bundle of felt fibres arises on the dorsum of the 

 notopodium and smaller tufts between and anterior to the large setse. 

 They form a felt much thinner but otherwise similar to that of the large 

 species. 



This species is evidently closely related to A. intermedia Mcintosh, 

 dredged by the Challenger in the West Indies, which is, so far as known, 

 somewhat larger. The latter species is very briefly described from a 

 single specimen, but appears to differ from A. parva chiefly in the 

 absence of ocular papillse and eyes, the form of the neuropodial setse 

 and their longer spurs which, it is implied, occur on all setse. Although 

 these two stand apart from the remaining species of the genus they can 

 scarcely constitute a group of greater than subgeneric value. In any 

 case it is interesting to find such a comparatively minute representative 

 of a genus that includes some of the bulkiest of polychsetes. 



The two known examples of A. parva were taken in the Gulf of 

 Georgia at station 4,194, in 111 to 170 fathoms. 

 Euphrosyne bicirrata sp. nov. PI. XXXIV, figs. 8-12. 



In their contracted state the largest examples are 20 mm. long and 

 6.5 mm. in greatest width, with 25 setigerous segments, all well differ- 

 entiated. The body has the usual robust, depressed form with the 

 anterior end broadly rounded and the posterior decidedly narrower and 

 more tapering. The smooth dorsal area is completely concealed by 

 the notopodial setse, but when the latter are removed proves to con- 

 stitute about one-fifth of the width of the back. The dorsal caruncle 

 is short, the basal plate reaching to the anterior margin only of V, while 

 the posterior end of the prominent crest extends freely to the posterior 

 end of that segment. A pair of prominent black dorsal eyes is situated 

 at the anterior termination of the caruncle and between them arises 

 the median tentacle, which is two-thirds as long as the caruncle with a 

 very large stout base bearing a suddenly contracted terminal filament 

 forming one-third of the total length. The ventral eyes are smaller than 

 the dorsal, black and closely approximated and just external to them 

 on each side is a minute tentacle having a length of about two-thirds 

 the width of the prostomial area. The palpi are ovoid, the broader end 

 largely free at III and are separated for their entire length by a very 

 deep longitudinal cleft. Posteriorly they overlap the mouth, which is 

 small and bounded behind by the wrinkled triangular lip incising III 

 and IV. There is a well-marked and continuous neural groove and 

 the subanal cirri are fleshy and of the usual form. The cuticle gener- 

 ally exliibits a pale blue iridescence and on each side of the dorsal area 

 is a series of brown spots. 



