58 



Stat. 75. June S. Lat. 4°57'.4S., long. 119° 2.8 E. 18 m. Hensen vertical net, from 11 m. 



to surface ; electric light in net. 4 specimens. 

 Stat. 81. June 14. Pulu Sebangkatan, Borneo-bank. 34 ni. Plankton. 4 specimens. 

 Stat. 106. July 4. Anchorage off Kapul-island, Sulu-archipelago. 13 m. Plankton, i specimen. 

 Stat. 109. July 5 — 6. Anchorage off Pulu Tongkil, Sulu-archipelago. 13 m. Plankton. 3 specimens. 

 Stat. 117a. Jiily 12. Lat. I°I5'N., long. 123° 37' E. Townet. Many specimens. 

 {? Stat. 132). July 25. About Lat. 5°56'.7N., long. i26°25'E. Townet. Many specimens. 

 Stat. 136. July 29 — Aug. 3. Ternate anchorage. 23 m. Plankton. 12 specimens. 

 Stat. 138. Aug. 13. Anchorage on the east coast of Kajoa-island. 66 m. Plankton. 10 specimens. 

 Stat. 141. Aug. 5. Lat. i°o'.4S., long. I27°25'.3E. HensEN vertical net, from 1500m. depth 



to surface. 3 specimens. 

 Stat. 144. Aug. 7 — 9. Anchorage North of Salomakiee-(Damar-)island. 45 m. Plankton. 3 



specimens. 

 Stat. 157. Aug. 15 — 16. Lat. o°32'.9S., long. 130° 14'. 6 E. Townet. 4 specimens. 

 Stat. I77». Sept. I. Lat. 2°3o'S., long. 129° 28' E. Townet. 15 specimens. 

 Stat. 189a. Sept. 12. Lat. 2°22'S., long. I26°46' E. Townet. ii specimens. 



Description. — The distance between the labrum and the insertion of the eye- 

 stalks about, or slightly more than, twice as long as the stalks with eyes; the stalks are not 

 conical but subcylindrical to somewhat before the eyes (fig. 8^;). First antennular joint at most 

 reaching the anterior margin of the eyes, generally distinctly shorter. On sixth abdominal seg- 

 ment (fig. I a) the first ventral process is as long as, or generally somewhat or much shorter 

 than, the second, very acute, a little curved and placed about mid-way between the base of 

 the segment and second process; the latter tapers to the rather narrow, obtuse end. Telson in 

 the male (fig. Sd) differs considerably from those in group A in having the ventral protuberance 

 much smaller; this protuberance is directed downwards and only a little or slightly backwards. 

 Exopod of uropods in the male (fig. la) five or a little more than five times as long as broad; 

 the short terminal margin is transverse or a little oblique (figs, i 6 and i r), because the marginal 

 process, which varies much in length, originates a little in front of or below the upper distal 

 angle of the exopod, and the process overreaches somewhat or very much the transverse hind 

 margin. In the female the exopod is a little broader, not fully five times as long as broad ; 

 the terminal margin is rather oblique (fig. i d), and the marginal ijrocess terminates below or 

 a little before the uj^per distal angle of the exopod. • 



The petasma (figs, le — !_<'') has the terminal portion rather narrow and very peculiar. 

 The end is broadly rounded without any protuberance, but on the distal lateral margin two 

 protuberances are very conspicuous, the pro.ximal much broader than the distal, and at a closer 

 investigation, especially when the organ is examined from in front (fig. i^), each protuberance 

 (/.) is seen to be a freely protruding, obliquely inserted plate with its free margin almost semi- 

 circular; the distal part of the inner si,de of the terminal portion is adorned with a good number 

 of fine but very distinct transverse lines (fig-. le, and especially fig. i/, s.) about as in the 

 species of group A. The processus ventralis (/t'.) is a very long, narrow plate with its distal 

 part somewhat widened, and its end is deeply and broadly incised with the bottom of the 

 incision rounded, and without any brush. The process (/>.) on the front margin of the pleopod 

 beyond the petasma is slender with a few prickles on the end. 



Length of a male 10.3 mm., of a female i 1 mm. 



