Scaphognathite with 4 marginal plumose setae 

 and elongate sharp process bearing numerous 

 minute hairs laterally. 



Maxilliped 1 (Figure 2H). Coxopodite with 1 

 seta. Basipodite ventral margin with 10 sparsely 

 plumose setae arranged (proximally to distally) 2, 

 2, 3, 3; this setal formula holds for remainder of 

 stages. Endopodite five-segmented with proximal 

 to distal segment setation of 2, 2, 1, 2, 4+1. (Roman 

 numeral denotes dorsal seta.) Exopodite with 4 

 terminal natatory setae. 



Maxilliped 2 (Figure 21). Coxopodite without 

 setae. Basipodite ventral margin with one row of 4 

 sparsely plumose setae; this setal formula holds 

 for remainder of stages. Endopodite three- 

 segmented with proximal to distal segment seta- 

 tion of 1, 1, 4+1. Exopodite with 4 terminal nata- 

 tory setae. 



Maxilliped 3 and Pereiopods. Not apparent. 



Abdomen (Figure 2 A, B). With five somites. So- 

 mite 1 unornamented; somite 2 with anteriorly 

 curved lateral hooks; somite 3 with smaller poste- 

 riorly curved lateral hooks. Somites 3-5 with small 

 posterolateral spines overlapping following so- 

 mite. Somites 2-5 with pair of minute pos- 

 terodorsal setae. 



Telson (Figure 2 A, B). Bifurcate; each furca 

 smooth, possessing one larger lateral spine near 

 its midlength and one smaller dorsal spine 

 originating near apex of lateral spine. Inner telson 

 margin with 3 pairs of articulated spines, each 

 armed throughout length with minute spinules, 

 center pair of spines with 2 longer interior 

 spinules and 1 longer exterior spinule located at 

 proximal one-third of spine. Inner telson margin 

 with pronounced medial sinus. 



Color. Zoea mainly colorless with exception of 

 localized pigment concentrations. Dorsal area of 

 orbit pale mint green, color fading into interor- 

 bital area; interorbital protuberance faint orange. 

 Gastric region pale orange extending along gut 

 through first two abdominal segments (this color 

 not due to ingested Artemia); diffused pale mint 

 green surrounds orange of gastric region. Mandi- 

 ble incisor and molar surfaces scarlet, blending 

 into pale orange within mandible. First and sec- 

 ond maxillipeds with diffuse pale orange at junc- 

 tion of basipodite and exopodite. Proximal region 

 of telson furcae on either side of median telson 

 sinus tinted with diffused pale orange. 



FISHERY BULLETIN: VOL. 79, NO. 3 



Second Zoea 



Carapace length: 0.61 mm. 



Number of specimens examined: 10. 



Carapace (Figure 3 A, B). Eyes faceted, stalked. 

 Rostrum base with small, lateral preorbital pro- 

 tuberances perpendicular to longitudinal axis. 

 Dorsal spine usually with 2 small proximal setae, 

 occasionally with a few small widely spaced setae 

 and tubercles. Lateral spines with 2 to 4 minute 

 dorsal tubercles. Carapace ventral margin with 3 

 or 4 fringing setae; mediodorsal knob now with 4 

 integumental sensillae arranged into rectangle on 

 crest, one pair setae anterior and posterior to 

 knob. 



Antennule (Figure 3C). Four aesthetascs, 2 

 naked setae at tip. 



Antenna (Figure 3D). Unchanged except for in- 

 cipient endopodite primordium near exopodite 

 base. 



Mandibles (Figure 3E). As illustrated, without 

 palp. 



Maxillule (Figure 3F). Coxal endite unchanged 

 from first zoea. Basal endite apex with 6 denticu- 

 late spines, 1 naked seta; lateral surface with 1 

 plumose seta, —20 minute hairs. Endopodite un- 

 changed from first zoea. Protopodite now with 1 

 distal plumose seta. 



Maxilla (Figure 3G). Coxal endite bilobed with 4 

 proximal, 4 distal plumose setae. Basal endite 

 bilobed with 5 proximal, 4 distal plumose setae. 

 Scaphognathite with 11 or 12 marginal plumose 

 setae. 



Maxilliped 1 (Figure 3H). Coxopodite with 1 

 (rarely 2) seta. Endopodite unchanged from first 

 zoea. Exopodite with 6 terminal natatory setae. 



Maxilliped 2 (Figure 31). Coxopodite without 

 setae. Endopodite three-segmented with proximal 

 to distal segment setation of 1, 1, 4 or 5+1. Exopo- 

 dite with 7 terminal natatory setae. 



Maxilliped 3 and Pereiopods. Not apparent. 



Abdomen (Figure 3A, B). With five somites. So- 

 mite 1 with 1 posterodorsal seta; somites 2-5 gen- 

 erally unchanged from first zoea, but posterolat- 

 eral spines of somites 3-5 slightly longer relative 

 to body size. 



Telson (Figure 3A, B). Generally unchanged 

 from first zoea. An additional minute lateral fur- 

 cal spine may occasionally be present within the 

 fork created by the major lateral spine where it 

 originates from the furca. This spine (when pres- 

 ent) may be readily apparent, reduced to a lump. 



492 



