FISHERY BULLETIN: VOL. 73, NO. 1 



number of plumose setae on medial margin re- 

 main the same; the lateral spine on segment 1 

 gradually decreases in length. 



Maxillule with 6(2) or 7(20) setae on coxal 

 endite; basal endite (Figure 8C) with 6(1) or 7(21) 

 spines. 



Maxilla (Figure 81) usually with setation of 

 8-4-5-4-3 on inner lobes 1-5; lobe 3 now bears 

 5 setae; lobe 1 variable, with 7(1) or 8(20) setae. 



Maxilliped with 5 setae on terminal segment 

 of endopod (Figure 9C); coxa with 5(3) or 6(18) 

 setae. 



Leg 2 (Figure lOA) present, rudimentary; bud 

 of leg 3 sometimes visible. 



Pleopod (Figure IIL) non-setose and unseg- 

 mented, or with incipient segmentation and bud 

 of endopod. 



Uropod (Figure IIR) with 6 plumose setae on 

 exopod; endopod articulated with protopod, bear- 

 ing 6 marginal plumose setae and 3-5 small dorsal 

 setae. 



Telson (Figure 12 A) with posterolateral spine 

 2 relatively longer. 



Furcilia II (Figures 3B, 4B) 



Rostrum of carapace a little narrower, with 

 smaller marginal spines; posterior margin with- 

 out dorsal spine; lobes of eye more defined 

 (Figure 6K). Abdomen with 1 pair setose and 

 3 pairs non-setose pleopods on segments 1-4 

 respectively; photophore on segment 1 pigmented 

 and functional, developing photophore on seg- 

 ment 4 sometimes with faint pigment. 



Antennule (Figure 6H) with 5 setae on dorsal 

 lobe of peduncle segment 3 one of which projects 

 dorsally; this setation, with dorsally oriented seta 

 becoming longer and stronger, is found in subse- 

 quent furcilia stages. Flagella now approximately 

 as long as 3rd segment of peduncle. 



Maxillule (Figure 8D) with 7(1) or 8(23) setae 

 on coxal endite; basal endite with 7 marginal 

 spines and often, in 16 of 24 appendages, with 

 small seta on proximal margin. 



Maxilla usually with setation of 8-4-5-5-3; 

 lobe 3 variable with 5(23) or 6(1) setae and lobe 4 

 (Figure 8J) with 4(3) or 5(21) setae. 



Maxilliped usually with 6 setae on terminal 

 segment of endopod (Figure 9D), 5(3) or 6(21) 

 setae were observed; coxa with 5(1) or 6(23) setae. 



Leg 2 (Figure lOB) with endopod bearing 2 

 terminal setae and unsegmented or with 2 or 3 



weakly defined segments; exopod rudimentary, 

 without setae; gill bilobed; developing photo- 

 phore on coxa sometimes with faint pigment. 

 Leg 3 (Figure lOH) rudimentary, or with bud of 

 exopod and gill. Bud of leg 4 may be present. 



Setose pleopod 1 (Figure IIM) with 6 plumose 

 setae on exopod, small endopod with single seta 

 and median hook; non-setose pleopods 2-4 as in 

 furcilia L 



Uropod (Figure US) with 8(21) or 9(1) setae 

 on exopod, endopod with 7 marginal and 11 or 12 

 dorsal setae. This is the last stage in which 

 numbers of setae can be counted; in preserved 

 specimens the marginal setae are too frequently 

 broken to attempt enumeration. 



Telson (Figure 12B) narrower, posterolateral 

 spine 3 wider basally. 



Furcilia III (Figures 3C, 4C) 



Carapace with rostrum narrowing, anterior 

 marginal spines may be very small remnants. 

 Abdomen with 4 pairs setose and 1 pair non- 

 setose pleopods on segments 1-4 respectively; 

 photophores on segments 1 and 4 pigmented 

 and functional; developing photophore on segment 



2 sometimes with faint pigment. 

 Antennular flagella (Figure 61) almost twice as 



long as peduncle segment 3 and may be 2- 

 segmented; outer flagellum with 2 aesthetascs 

 on inner margin one of which bifurcates distally. 



Mandible with anterolateral process about one- 

 half as long as that figured for calyptopis IIL 



Maxillule with 8 setae on coxal endite; basal 

 endite (Figure 8E) with 7(1), 8(4), or 9(17) spines 

 on medial margin and 1 small seta on proximal 

 margin. 



Maxilla usually with setation of 8-4-6-5-3; lobe 



3 (Figure 8K) now with 5(2) or 6(20) setae; lobe 

 5 variable with 2(1) or 3(20) setae. 



Maxilliped with 5(3) or 6(16) setae on coxa 

 and 6 on terminal segment of endopod. 



Leg 2 (Figure IOC) with endopod 5-segmented, 

 articulation with basis indistinct, setation 

 variable, terminal segment with more than 2 

 setae; exopod with 0(7), 1(5), or 2(5) setae; gill 

 bilobed; photophore pigmented and functional. 

 Leg 3 (Figure 101) with endopod unsegmented or 

 with a few (less than 5) weakly defined segments, 

 setation variable, distal segment usually with 2 

 terminal setae, 2(21) or 3(1) setae were observed; 

 exopod rudimentary, without setae; gill bilobed. 



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