3- Sthenelais orientalis Potts. PI. XXII, figs. S and 9; PI. XXIII, figs. i and 2. 

 POTTS, loc. cit., p. 348, PI. XXI, fig. 62. 



Stat. 96. South east side of Pearl-bank, Sulu Archipelago. Depth 15 M. i specimen. 

 Stat. 99. 6°7'.5 Lat. N., I20°26' Long. E. Anchorage off North Ubian. Depth 16 — 23 M. 

 I specimen. 



Two specimens were collected ; at Stat. 96 an incomplete one, a female and at Stat. 99 

 a small specimen with regenerated tail, measuring 15 mm. in length. The species can easily 

 be recognized by its dead-white elytra and the composition of its neuropodial fascicles, that 

 contain in their dorsal part simple, spinous setae only, whereas the compound mid-ventral 

 bristles have a very short appendi.x. The scales cover the whole dorsum and are overlap- 

 ping each other ; the anterior pair of them are oval, covered over their surface and allround 

 with long cylindrical papillae. The remaining ones (PI. XXIII, fig. 2) are reniform ; their 

 concave, anterior border is smooth, but the posterior border as well as the surface is be- 

 set with papillae, that have the appearance of cylindrical spines. Along the exterior border 

 of the elytra there occur a dozen of digitiform papillae, with a broad base, while between them 

 small cup-shaped papillae are situated. The prostomium (PI. XXII, fig. 8) is rounded, somewhat 

 more broad than long, with conspicuous black eyes, the left anterior one however being absent. 

 From the middle of its dorsum the tentacle arises with a basal joint, furnished on each side 

 with a long, triangular ctenidium; the conical distal joint is only a little longer than the basal 

 one, nearly as long as the dorsal tentacular cirrus. \ 



In a typical foot (PI. XXIII, fig. i) the notopodium is much smaller than the neuropo- 

 dium, club-shaped, with four stylodes at its distal extremity and three ctenidia along its dorsal 

 side ; the notopodial bristles are of the usual shape. The neuropodium is high, rounded trian- 

 gular, with several short stylodes along its margin; its bristle-fascicle consists of : (i) a dorsal part, 

 containing only simple setae with spirally arranged, pectinate whorls below the tip, (2) a central part 

 of stout compound bristles, with a simple short bifid appendix (PI. XXII, fig. 9), while in the 

 ventral part these appendices are slender and multi-articulate. The ventral cirrus, that extends 

 nearly to the extremity of the foot, has a short appendix at its base, whereas a stylode is 

 situated behind the cirrus. 



4. Sthenelais hcterochcla n. sp. PI. XXIII, figs. 3 — 6. 



Stat. 193. Sanana Bay, East-coast of Sula Besi. Depth 22 M. i specimen. 



At this Station the anterior fragment of a female Sthenelais was collected, that cannot 

 be identified with one of the species hitherto described, on account of the characteristical feature 

 of the cheliform process of its neuropodial setae. The prostomium (PI. XXIII, fig. 4) is trans- 

 versely elliptical, with two pairs of conspicuous eyes. From the middle of its dorsum the tentacle 

 arises with a basal part, that is transversely grooved and provided on each side with a large 

 foliaceous ctenidium; its distal joint is long, tapering, nearly extending to the extremity of 

 the dorsal tentacular cirrus. The lateral antennae are short and conical. The palps are not 



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