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Max il la (PI. XVI, fig. 9 and 9*). Two superior and two inferior spines of about 

 the same length ; the latter situated on a step-like projection. A notch behind the two superior 

 spines, and a smaller one at the basis of the step-like projection. Between the two, the edge 

 bears 8 to 9 spines, some of them in pairs and together forming two indistinct rows. 



Ou ter maxillae (PI. XVI, lig. 10). Outer lobe oval, inner lobe somewhat quadrate, 

 with rounded angles as in B. amaryllis. A large part of inner surface of outer lobe covered 

 with hairs, a group of which runs longitudinally towards inner lobe. Hairs on inner lobe 

 numerous, those placed near interior margin longer and directed towards the basis of the maxilla. 

 The stronger hairs are as usual distinctly feathered. 



Cirri. First pair: rami unequal of 10 and 20 segments ; 7 lower segments of longer 

 ramus only indistinctly separated. Segments 5 — 8 of shorter ramus with their inner faces 

 strongly protuberant. 



Second pair: rami nearly equal of 11 and 12 segments; segments 5 — 10 in both 

 rami distinctly protuberant. 



Third pair: rami have 16 and 17 segments, and most segments slightly protuberant. 

 No teeth along the margin of the protuberances; their surface, however, is rough from the 

 presence of short microscopical spines. The dorsal surface of the pedicel near the extremity, and 

 of the lower segments of the rami, also rough in consequence of the presence of numerous very 

 short spine-like teeth. A small tuft of long hairs is placed on the dorsal face of the i th segment 

 of the pedicel. A denser tuft of similar long hairs is seen on the thorax beneath and behind 

 the pedicel of this cirrus. 



Fourth-sixth cirrus of about the same structure. 



Sixth pair: rami have 41 to 42 segments. The segments of the basal part — about 

 17 in all — are as long as broad or even shorter; the 15 middle segments gradually grow 

 longer, till the last are twice as long as broad; the 10 terminal segments are more than 

 twice as long as broad. The last 1 2 segments bear two pairs of spines on their anterior 

 faces, these spines differing considerably in size. The middle segments (PI. XVI, fig. 11) have 

 three pairs: the outer pair more than twice as long as the segment, the middle pair about 

 same length as segment, or a little longer, the lowest pair very short. Between the two 

 spines of the two upper pairs a few — 2 to 3 — small hairs are situated, which are delicate 

 and short, and do not form a distinct tuft as is the case in B. amaryllis. 



Penis short, not quite l /. 3 the length of the sixth cirrus, strongly tapering towards the 

 extremity. The basi-dorsal point is well-developed but shorter, with the extremity blunt and not 

 recurved as in B. amaryllis. 



Both specimens were found attached to a specimen of a sponge. They were collectedat: 



Stat. 47. April 8 — 12, 1S99. Bay of Bima, near South fort. Deptli 13 to 31 m. Two specimens. 



General Remarks. This species no doubt comes very near to B. amaryllis. The 

 general shape, the mode and the object of attachment, and several details in the structure 

 of the animal's body, however, sufficiently justify my considering it-a different species. 



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