NO. 10 



CRUSTACEAN METAMORPHOSES — SNODGRASS 



63 



larva (fig. 24 A) is from 2 to 2.25 mm. in length. The thorax is fully 

 segmented and is entirely covered by the carapace. The abdomen 

 (Ab) is either unsegmented and entirely united with the telson (Tel) 



Fig. 24. — Stomatopoda. Larval stages and an adult. (A-E from Giesbrecht, 

 1910; F from Alikunhi, 1952.) 



A, an antezoea larva. B, Squilla mantis Latr., first propelagic stage. C, same, 

 second propelagic stage. D, same, first pelagic stage, dorsal. E, same, first 

 pelagic stage, lateral. F, Squilla latrcillci, last pelagic larval stage. G. Squilla 

 mantis, adult male. 



Ab, abdomen; lAnt, first antenna; 2Ant, second antenna; E, eye; iL,2L,5L, 

 8L, first, second, fifth, and eighth thoracic appendages ; Tel, telson. 



in a wide, fan-shaped plate, or one or two anterior segments may be 

 free. The eyes (£) are large but sessile. The first five thoracic seg- 

 ments bear each a pair of small, biramous appendages (iL, jL) used 

 for swimming. The antezoeal larva is pelagic. During subsequent 



