6o 



end; endopod without spines along the inner margin; otocyst conspicuous. Telson as long as, 

 or slightly longer than, the uropods, with a small number of strong lateral spines distributed 

 with nearly regular intervals; the end is incised with some pairs of slender spines and at the 

 last lateral spine a very strong spine about as long as the terminal breadth of the telson. 



Remarks. — The genus is somewhat similar to Anchialina in the eyes, the antennulae, 

 the mouth parts, the thoracic legs and the small wings on first female abdominal segment, while 

 the pleopods in both sexes differ strongly from those in Anchialina and agree much more 

 with those in Gastrosaccus, but are still more reduced ; in the shape of the antennal squama 

 and in shape and spinulation of the uropods the genus differs considerably from the other 

 genera of the subfamily. 



32. PseudancJiiaiina pnsilla G. O. Sars. PI. VIII, figs. 40 — \c\ PI. IX, figs. \a — ik. 



1SS3. Promysis (?) pusilla G. O. Sars, Forh. Vid. Selsk. Christiania for 1SS3, N" 7, p. 42. 

 1883. Anchialus ptisillus G. O. Sars, Challenger Rep., p. 200, PI. XXXV, figs. 19 — 20. 



Stat. 81. June 14. Pulu Sebangkatan, Borneo-bank. 34111. Plankton. 9 specimens. 



Stat. ii7\July 12. Lat. i°i5'N., long. 123 37' E. Som. Plankton. 1 specimen. 



Stat. 144. August 7/9. Anchorage North of Salomakiëe-(Damar-)island. 45 m. Plankton. 2 



specimens. 

 Stat. 189". September 12. Lat. 2°22'S., long. I26°4Ó'E. Townet. 2 specimens. 



Description. — Frontal plate in the female (fig. xc) very large, broad and long, 

 somewhat triangular but distally very broadly rounded ; in the male (fig. 1 b) the plate is some- 

 what narrower at the middle. Eyes of very moderate size, dark brown or nearly black, as 

 broad as the end of the stalk; distal joint of the stalk cylindrical and nearly as long as broad. 

 Antennal squama (fig. 1 d) not quite three times as long as broad, increasing strongly in breadth 

 from the base to near the end. (In the female lateral free wings on first abdominal segment 

 could not be found, but I suppose they exist; my material is not well preserved and besides 

 scanty, most of my specimens being males). In the male the second pair of pleopods are a 

 little longer than their segment (fig. 1 //) ; the endopod is very short and terminates in a few 

 setee; the exopod is considerably longer than the peduncle, two-jointed, second joint not half 

 as long as the first and terminating in long setee. Third pair of pleopods (fig. 1 h) have the 

 peduncle a little longer than the whole second pleopods; the endopod is a slender and very 

 short joint; the exopod is elongated, about half as long again as the peduncle, reaching beyond 

 the middle of the sixth segment, two-jointed, with its second joint not half as long as the first 

 and terminating in three very long setse. Telson (figs. 1 i and 1 k) not fully three times as long 

 as broad, at the middle not half as broad as at the base, with 7 or 8 spines along each lateral 

 margin, including the postero-lateral spine placed just outside the terminal extremely long spine; 

 each margin of the terminal incision with 5 or 6 spines, the inner of which very small and 

 extremely thin. — Colour yellowish, without darker dots. 



Length of both sexes 3.2 mm. 



Remarks. — Sars established this species on two specimens taken by the "Challenger" 

 in the Celebes Sea. He says: "My examination of the species has not been so close as could 



