Cumacea: 8. Platysympodidae, 1. Platysympus 



61 



1. Gen. Platysympus T. Stebbing 



1810 Platyaspis (non Platyaspis Agassiz 1846 pro: Platynaspis Redteubacher Col. 

 1843) (Sp. un.: P. typica), G. 0. Sars in: Forh. Selsk. Christian., 1869 p. 158 | 1900 

 P., G. O. Sars. Crust. Norway, v. 3 p. 26 | 1905 P. (part.), Caiman in: Sci. Invest. Fish. 

 Ireland, 1904 app. 1 p. 42 | 1908 P., Zimmer in: Ergeb. Tiefsee-Exp., ^;. 8 p. 159, 170 | 

 1912 P., Caiman in: P. U. S. Mus., vAl p. 634 | 1912 Platysynqms, T. Stebbing in: 

 Ann. S. Afr. Mus., v. 10 v p. 143. 



Carapace broad, depressed, first pedi- 

 gerous segment conspicuous, flagellum of 

 antenna 2 in the male not very elongate. 



2 species. 



Synopsis of species: 



Telson two-thirds as long 

 as the peduncle of the 

 uropods l.P.typicus 



Telson little more than half 

 as long as the peduncle 

 of the uropods .... 2. P.braehynrus 



1. P. typicus (0. Sars) 1870 Platyaspis 

 typica, G. O. Sars in: Forh. Selsk. Christian., 1869 

 p. 158 I 1900 P. t., G. 0. Sars, Crust. Norway, v.3 

 p. 27 t. 19, 20 I 1905 P. t.. Caiman in : Sci. Invest. 

 Fish. Ireland, 1904 app. 1 p. 12, 42 | 1907 P. t., 

 Zimmer in: Zool. Anz., u31 p. 374 | 1912 P. t., 

 Caiman in: P. U. S. Mus., u41 p. 634 | 1912 Platy- 

 sympus typicus, T. Stebbing in: Ann. S. Air. Mus., 

 V. lOv p. 144. 



Integument squamose. Carapace twice 

 as long as the pedigerous segments combined, 

 or in Q even more than twice, the shape 

 quadrangular oval, widest in front in d, to 

 the rear in g , pseudorostrum about hori- 

 zontal, eyelobe small, the medio-dorsal line 



Fig. 31. 

 P. typicus (?) (Sars). 



Fig. 32. 

 P. typicus (Sars), maxiUa i. 



from this to the rear gently convex, obtusely carinate, the sides lamellarly 

 expanded, carinate, probably fringed as in Plati/t^pMops peringueyi. Pedigerous 

 segment 1 in adults nearly as long as the 3 following segments combined, with 

 saddle-like dorsal depression; 'H'^^ segment with double dorsal carina (Caiman). 

 Pleon very slender, subequal in length to preceding part of the body. Telson 



