Choi and Hong: Laiwal development of Metapenaeopsis dalei 
283 
Telson (Fig. 5A): Separated from the 6th abdominal so- 
mite with seven pairs of setae. 
First mysis stage (Fig. 6, A and B, Fig. 7, A-N) 
Size TL: 2.79 mm (2.69-3.07 mm; SD=0.14; n = 15) 
CL: 0.75 mm (0.64-0.86 mm; SD=0.06; n = 15) 
Carapace (Fig. 6, A and B): Closely covering thoracic 
somites; one pair of supraorbital, antennal and pterygo- 
stomial spines, 10 anteroventral and three posteroventral 
spines on each marginal side; rostrum long with one dor- 
somedian rostral tooth. 
Antennule (Fig. 7A): Uniramous; peduncle three-seg- 
mented, 1st segment with one large ventral spine, one 
small proximal spine and 11 setae, 2nd segment with 10 
setae, 3rd segment with seven setae; outer ramus with 
seven aesthetascs; inner ramus with two setae. 
Antenna (Fig. 7B): Biramous; protopod two-segmented; 
endopod and exopod unsegmented; endopod with three na- 
ked setae; exopod (scaphocerite) with 12 marginal plu- 
mose setae. 
Mandible (Fig. 70: Left mandible with seven denticu- 
late setae; right mandible with three denticulate setae; 
mandibular palp present as bud. 
Maxillule (Fig. 7D): Biramous; protopod two-’obed, coxal 
endite with eight setae, basal endite with nine stout setae 
and three setae; endopod three-segmented with 3, 2, 5 se- 
tae; exopocl with four plumose setae. 
Maxilla (Fig. 7E): Biramous; protopod five-lobed, endites 
with 11, 5, 7, 7, 3 setae; endopod 4-segmented with 2, 2, 2, 
3 setae; exopod (scaphognathite) with nine plumose setae. 
First maxilliped (Fig. 7F): Biramous; coxa with eight se- 
tae, basis with 14 setae; endopod four-segmented with 4, 2, 
2, 5 setae; exopod with nine plumose setae. 
Second maxilliped (Fig. 70: Biramous; coxa with three 
setae, basis with eight setae; endopod four-segmented with 
4, 4, 2, 5 setae; exopod with four plumose setae. 
