NO. 3580 OSTRACOD FAMILIES — KORNICKER 5 



(Continued) PhUomedidae Pseudophttomedidae 



Maxilla, no. of endites 3 2 



Maxilla, end joint with process (p) or only spines (s) s p 



5th limb, no. of endites 3 1? 

 5th limb, 2nd joint with extremely long fanglike tooth 



(f) of with shorter tooth (s) s f 



6th limb, no. of endites 4 3_4 



6th limb, end joint, no. of bristles 9-45 7-9 

 7th limb, terminal with comb opposed by 2 pegs (p) or 



2 opposing combs (c) p o 



Skogsberg (1920), Poulsen (1962, 1965), and Hartmann (1964) are 

 correct in considering the families Rutidermatidae Brady and Nor- 

 man, 1896, Cylindroleberidae Miiller, 1906 (= Asteropidae Brady, 

 1874), and Sarsiellidae Brady and Norman, 1896, to have coordinate 

 rank. In view of the anatomy of the male Rutiderma, recognized for 

 the first time by Poulsen (1965), referral of the genus Rutiderma to 

 the SarsielUdae as done by Sylvester-Bradley (1961) seems no longer 

 tenable. Thus, the famihes contained in the superfamily Cypridi- 

 nacea are: Cypridinidae Baird, 1850; Philomedidae Miiller, 1912; 

 Rutidermatidae Brady and Norman, 1896; Cylindroleberidae Miiller, 

 1906; Sarsiellidae Brady and Norman, 1896; Pseudophilomedidae, 

 new family. 



Key to Families of Cypridinacea 



1. Well-developed gills * along posterior of body, protopodite of maxilla elongate 



with row of ventral bristles Cylindroleberidae 



Without both well-developed gills and elongate protopodite on maxilla ... 2 



2. Mandible of female with large pincers distally Rutidermatidae 



Mandible without large pincers 3 



3. Fifth limb of female with large teeth 4 



Fifth limb of female without large teeth Sarsiellidae 



4. Maxilla with only 2 stout endites Pseudophilomedidae 



Maxilla with 3 endites ^ 



5. Lamellar prolongation of selvage with fringe of hair .... Philomedidae 

 Lamellar prolongation of selvage without fringe of hair .... Cypridinidae 



* Gills are common to all Cylindroleberidae but are rare in the Cypridinidae. 



Pseudophilomedidae, new family 



Philomedinae Muller, 1912, p. 24 (part). 



Type genus. — Pseudophilomedes MiiUer, 1894. 



Diagnosis (female; male unknown) .—SheU : Oval in lateral view 

 with rostrum and posterior process. Antennal sinus varies from 

 shallow curvature to deep incisure. Punctate surface smooth or 

 with longitudinal ridges or medial sulcus. Inner lamella with 4 or 



