FISHERY BULLETIN: VOL, 77, NO. 4 



Figure 2.—Penaeopsis balssi, S 21 5 mm cl. Formosa Bay, 

 Kenya A, Anteroventral part of carapace. B, 6 25 mm cl. off 

 Kunduchi, 20 km N of Dar es Salaam, Tanzania. Telson and 

 right uropod, lateral view. C, Same specimen, tip of telson, dor- 

 sal view. Scales: A,C = 2 mm; B = 5 mm. 



0.3 of second article. Flagella in both male and fe- 

 male similar to those of P. rectacuta (see p. 743). 



Scaphocerite falling short of, or slightly over- 

 reaching, distal end of antennular peduncle; lat- 

 eral rib ending in sharp spine not quite reaching 

 terminal margin of lamella. Antennal flagellum 

 incomplete in specimens studied. 



Third maxilliped extending at least to base of 

 second antennular article and at most to distal 

 0.4 length of third; ratio of dactyl/propodus 0.75- 

 0.80. 



First pereopod extending to distal end of carpo- 

 cerite or exceeding it by length of dactyl. Second 

 pereopod surpassing carpocerite at least by dactyl 

 and at most by propodus and 0.2 length of carpus 

 (also reaching between distal 0.3 of first antennu- 

 lar article and about midlength of second). Third 

 pereopod reaching at least to midlength of second 

 article and at most to near end of peduncle. 

 Fourth pereopod overreaching carpocerite by 0.8 

 length of dactyl or by as much as length of dactyl 



and propodus. Fifth pereopod extending to distal 

 0.2 of first article or as far as distal 0.3 of sec- 

 ond. Order of pereopods in terms of their 

 maximum anterior extensions: first (shortest), 

 fourth, second, fifth, and third. Third maxilliped 

 falling slightly short of third pereopod. 



Abdomen with sixth somite elongate, about 1.7 

 times maximum height, bearing almost indis- 

 tinct, interrupted cicatrix on lateral surface. Tel- 

 son (Figure 2B) armed with two pairs of small, 

 movable spines; pair of fixed spines long, extend- 

 ing about midlength of terminal portion (Figure 

 2C); terminal portion hastate, convex dorsally, its 

 length about 7 times basal width. Mesial ramus 

 of uropod overreaching apex of telson by as much 

 as 0.15 its own length; lateral ramus exceeding 

 mesial one by as much as 0.3 its own length. 



Petasma (Figure 4A, B\ with dorsomedian 

 lobule produced in relatively broad distomedian 

 projection, bearing elongate distal plate and sub- 

 triangular proximal plate raised mesially in 

 strong crest; rib of dorsolateral lobule terminat- 



FlGURE 3.—Penaeopsis balssi, 9 38.5 mm cl, off Natal, South 

 Africa. A, Mandible. B, First maxilla. C. First maxilliped (all 

 ft-om left side). Scale = 5 mm 



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