1 1 



3. PasipJuca sp. '(j. PI. I and II, Fig. 4 — 4/. 



Stat. 105. July 4. 6°8'N., 121° 19' E. Off Sulu-island. 275 m. Coralbottom. i specimen. 



Though this specimen, like that from Stat. 141, seems to belong also to a new species, 

 I likewise hesitate to describe it as such, because it is still young, not yet adult, as supposed. 

 This specimen, indeed, is only 20 mm. long from the anterior margin of the rostrum to tip 

 of telson. In its outer appearance and in several characters it much resembles Pas. Sivado 

 (Risso). The carapace, measured in the middle line, proved to be 5,45 mm. long, little more 

 than one-fourth of the whole length, while the length of the carapace is contained two and two- 

 thirds times in the length of the abdomen. Rostrum (Fig. 4a) rounded, little prominent and 

 much broader at base than long; outer orbital angles obtuse, projecting far beyond the rostrum. 

 Antennular prominence also rounded, hardly separated from the outer orbital angle by a short 

 and very shallow sinus, but by a broader and deeper sinus from the rounded antero-inferior 

 angle of the carapace. Branchiostegal spine small, behind which the branchiostegal sinus appears 

 very broad though shallow. The carapace which is 3-times as long as high at the level of the 

 branchial regions, narrows rather much anteriorly like in Pas. Sivado and the linear distance, 

 1,2 mm., between the two branchiostegal spines, is a little shorter than the height, 1,68 mm., 

 of the carapace at the level of the branchial regions. The upper border of the carapace is obtuse, 

 rounded, not carinate; a little behind the rostrum it descends obliquely to the level of the front 

 and while the carapace is here, at the anterior fourth or fifth, distinctly pinched in on each 

 side of the middle line, the anterior e.xtremity of the upper border looks like a tuberculiform 

 post-frontal tooth. A short obtuse crest unites this post-frontal tooth with the anterior margin 

 of the rostrum. Lateral sides of carapace smooth, without ridges or grooves. 



The first five abdominal somites are rounded dorsally. The 5* somite which is 1,6 mm. 

 long, measured along the upper border, appears half as long as the 6^'^, that measures 3,5 mm.; 

 the 6"> somite, twice as long as high, is strongly compressed, as usual in this genus, its upper 

 border, however, is blunt and terminates posteriorly in a small sharp tooth, that is directed 

 horizontally backward. The telson is 2,45 mm. long, about two-thirds the length of 6'*' somite, 

 0,6 mm. wide at base, while the posterior extremity (Fig. 4^) is 0,25 mm. broad; the posterior 

 extremity appears slightly convex like in Pas. Sivado, the spinules are lost except those 

 at the outer angles, that are 0,27 mm. long. The telson is deeply and widely grooved 

 dorsally to near the base, it reaches a little beyond the middle of the outer plate of the 

 tailfan and to the posterior fourth or fifth of the inner. 



Eyestalks cylindrical, not dilated distally, reaching nearly to the distal extremity of basal 

 antennular article, cornea small, blackish, situated on the outer side and measuring one-fifth 

 the length of the stalks. 



Antennular peduncle 2 mm. long, one-tenth the length of the body and reaching four-fifths 

 of the way along the antennal scale; basal article little, only one-fifth, longer than the 2^^ and 

 y^ taken together, 2°'* measuring about one-third of basal article and one-third longer than 

 thick, 3"' one-fourth longer than 2"''. Antennular scale as long as the eyestalks. 



