FISHERY BULLETIN: VOL, 77. NO, 4 



fig. 1, la-b, 1'", Iz, Ibr. Alcock and Anderson 

 1899:278. A Milne Edwards and Bouvier 

 1909:225. 



Penaeus (Metapenaeus) serratus. Alcock and An- 

 derson 1894:145. 



Parapeneus serratus. Alcock 1905:520; 1906:52. 



Penaeopsis challengeri De Man 1911:76 Ipart, re- 

 placement name only; not female from Siboga 

 Expedition stn 253, which belongs to P. eduar- 

 doi]. Schmitt 1926:325. Ivanov and Hassan 

 1976:4. Perez Farfante 1977b: 173; 1979:208. 



Penaeopsis (Penaeopsis) serratus. Burkenroad 

 1934a:8. Anderson and Lindner 1945:309. 



Penaeopsis serratus. Kubo 1949:322. 



Penaeopsis serrata. Burukovsky 1974:31. 



Not Penaeopsis serratus Bate 1881. 



Material. 



Bate's syntypic series — Lectotype. Paralecto- 

 types: 



Fiji Islands— 16 3$, BMNH 1978.324, from 

 type-locality do from syntypic series assigned to 

 P. eduardoi by Perez Farfante 1977b). 



Diagnosis. — Rostrum slightly arched. Antero- 

 ventral angle of carapace obtuse. Telson with two 

 pairs of movable spines. Petasma with proximal 

 plate of dorsomedian lobule bearing mesial 

 crest; proximal process of rib of dorsolateral 

 lobule subcircular; ventral costa bearing flexible 

 distolateral projection and ending distally in 

 moderately long spine, not reaching level of cin- 

 cinnuli. Thelycal plate of sternite XIV with an- 

 terior border strongly arched on each side of pos- 

 teromedian projection of sternite XIII, raised in 

 submesial elevations, and bearing posteromedian 



subrectangular protuberance (sometimes con- 

 tinuous with depressed ridge) armed with median 

 tooth anteriorly. 



Description. — Rostrum (Figure 7) slightly arched 

 in adult, considerably so in young, and deep bas- 

 ally. Rostral plus epigastric teeth 12 (12 or 13 

 according to Bate 1888) in single specimen avail- 

 able (male) with rostrum unbroken, second ros- 

 tral tooth situated in line with orbital margin, 

 rostral teeth close together except for more an- 

 terior ones. Postrostral carina extending poster- 

 iorly for short distance beyond epigastric tooth, 

 ending at about level of dorsal extremity of cervi- 

 cal sulcus; minute dorsal tubercle located near 

 posterior margin of carapace. Antennal spine rel- 

 atively small; hepatic spine larger than, and 

 positioned distinctly ventral to, antennal spine. 

 Anteroventral angle of carapace broadly obtuse 

 (Figure 8A). Antennal carina short; cervical 

 carina sharp, accompanying sulcus well marked; 

 hepatic carina sharp, slanting sinuously from 

 below hepatic spine to pterygostomian spine; 

 branchiocardiac carina very conspicuous, sinu- 

 ous, and long, extending from short distance 

 behind posterior end of hepatic sulcus postero- 

 dorsally almost to margin of carapace. 



Antennular peduncle with length equivalent to 

 about 0.75 that of carapace, third article slightly 

 stouter and longer in male than in female, about 

 1.5 times as long as second in former and 1.3 

 times in latter; prosartema extending to distal 

 margin of first article; distolateral spine 

 slender and sharp, reaching as far as proximal 

 0.4 of second article; stylocerite ending in small 

 spine, length about 0.4 that of first article. An- 

 tennular flagella similar to those of P. rectacuta. 



Scaphocerite almost reaching or slightly sur- 



FlGURE 7. — Penaeopsis challengeri, lectotype 9 24.5 mm cl, off Matultu. Fyi Islands. Cephalothorax, lateral view. Scale = 5 mm. 

 730 



