PEREZ FARFANTE: REVISION OF PENAEID SHRIMP GENVS PEN AEOPSIS 



1 ) A 



, I C 



I 



B 



Figure S.—Penaeopsis challengeri, lectotype. A. Anteroventral 

 part of carapace B, Telson and right uropod, lateral view. C, Tip 

 of telson, dorsal view. Scales; A, C = 2 min;B = 5 mm. 



passing distal end of antennular peduncle; lateral 

 rib ending in sharp spine falling short of distal 

 margin of lamella. Antennal flagellum incom- 

 plete in available specimens. 



Third maxilliped reaching between distal 0.4 of 

 second article and proximal 0.3 of third; ratio of 

 dactyl/propodus about 0.65 in males and 0.75 in 

 females. 



First pereopod surpassing carpocerite by half to 

 entire length of dactyl, armed with distomesial 

 spine on basis and ischium. Second pereopod 

 overreaching carpocerite by length of propodus 

 and 0.2 that of carpus (also reaching distal end 

 of first antennular article), with basis and is- 

 chium unarmed. Fourth pereopod overreaching 

 carpocerite by length of dactyl and 0.2 that of 

 propodus. Remaining pereopods broken in speci- 

 mens studied. 



Abdomen with sixth somite elongate, about 1.7 

 times as long as maximum height, bearing barely 

 distinct cicatrix on lateral surface. Telson (Figure 

 8B ) with lateral margins armed with two pairs of 

 small movable spines; pair of fixed spines (Figure 

 8C) long, extending as far as base of distal third 

 of terminal portion; terminal portion hastate, dis- 

 tinctly convex dorsally, its length about 5 times 

 basal width. Mesial ramus of uropod slightly 

 overreaching apex of telson (Bate 1888) or over- 

 reaching it by as much as 0.2 of its own length, 

 and lateral ramus, in turn, surpassing mesial by 

 as much as 0.3 of its own length. 



Petasma (Figure 9A, B) with dorsomedian 

 lobule produced into well-defined distomedian 

 projection, and bearing small distal plate and 



FIGURE 9.-Penaeopsis challengen, 6 19 mm cl, off Matuku, Fiji Islands. A, Petasma, dorsal view. B, Ventral view of same. C. Right 



appendix masculina, dorsal view. Scale = 1 mm. 



731 



