LARVAE OF DECAPOD CRUSTACEA 



Anomura 



343 



Callianassidae 



Upogebiidae 



Axiidae 



Laomediidae 



Pre-Homarine stem 



KEY TO THE FAMILIES OF THALASSINIDEA 



6. 



Appendix interna of pleopods present 



Appendix interna of pleopods absent . 



Epipods on legs 



No epipods on legs 



Pleopods without branchial filaments 



Pleopods with branchial filaments 



Epipods on legs ... 



No epipods on legs 



Uropods with suture 



Uropods without suture 



Antennal scale present; leg i chelate . 



Antennal scale absent ; leg i subchelate 



2 



4 

 3 



Callianassidae 



Axiidae 



Callianideidae 



5 



Upogebiidae 



Laomediidae 



6 

 Axianassidae 

 Thalassinidae 



LITERATURE 



Balss, H., 1927. Crustacea Decapoda. Kiikenthal's Handbuch der Zoologie, in. 

 1933- Einige systematisch interessante indopacifische Decapoden. Mitth. Zool. Mus. Berlin, xix, 



pp. 84-97. 

 Bate, C. S., 1888. Crustacea Macrura. Challenger Rep. Zool., xxiv. 



Beurlen, K., 1930. Vergleichende Stammesgeschichte. Forts. Geol. Palaeont. viii, Heft 26. 

 BjORCK, W., 1913. Ueber das postlarvale Stadium von Calocaris macandreae. Ark. Zool., viii, no. 7. 

 Boas, J. E. V., 1880. Studier over Decapoderues Slaegtskabsforhold. Kgl. Dansk. Vid. Selsk. Skr., Ser. 6, 



Afd. I. 



