NO. 3580 OSTRACOD FAMILIES — KORNICKER 19 



as specimens A and B. Specimen A was dissected and used in de- 

 scriptions and Illustrations. 



3. A jar in the collection of the Zoological Museum of Berlin 

 containing a small vial with 1 whole ostracod and 1 left and 1 right 

 valve. The jar contains the label "Type, Philomedes aspera G. W. 

 Miiller, Kat. Nr 9152, Fundort Napoli." The small vial contains the 

 label, "9152." These specunens are syntypes; Miiller (1894) did not 

 designate a holotype for the species. The whole spechnen is a 

 mature male. The left and right valves are from different specimens; 

 their sex is unknown. I have designated the whole specimen as 

 number 1, the right valve as number 2, the left valve as number 

 3, and have illustrated each valve. All specimens were returned to 

 the Zoological Museum of Berlin in the same vial in which they were 

 received. The whole specimen was not dissected, but as the furca 

 was projecting from between the valves, it was possible for it to be 

 described and illustrated in this paper. 



Supplementary description. — Shell (figs. 9a-i; I2a-f): Lateral 

 outline oval, elongate with greatest height near middle, prominent 

 rostrmn and broad rostral incisure (figs. 9a, \2a-d)', surface of valves 

 with numerous large oval pits (fig. 96). Posterodorsal margin with 

 straight hinge; posterior hinge element of each valve consisting of 

 angular sclerotized process; medial hinge element straight; anterior 

 hinge element not prominent. Adductor muscle scars consisting of 

 about 16 or 17 individual scars below middle of valve (figs. 9e, i; 

 12g). Inner lamella broadening at postero ventral process and behind 

 rostrum (figs. 96, c; 12e). Selvage with wide, corrugated, lamellar 

 prolongation having fringe of slender spines along outer margin. 

 Twelve to 14 bristles forming row on inner lamella behind rostrum 

 (figs. 96,/; \2d)] inner lamella below rostrum with small hair followed 

 by a wide space and then 10 hairs on left valve and 14 on right valve 

 (figs, ^d, h). Postero ventral process with small hau-s on inner lamella 

 (figs. 9c, g; 12e); small hairs, singly or in pairs, formmg row on list 

 on posteroventral and posterior part of inner lamella (figs. 9e, g). 

 Radial pore canals numerous but faint. Hahs with taper distributed 

 on lateral surface of rostrum, some forming row near ventral and 

 posterior margins of valves; additional hairs sparsely distributed on 

 valve surface. 



Muscle scars were somewhat obscured on all specimens. Four 

 muscle scars located in the anterior part of the central muscle field 

 of Miiller's syntypes were not observed on the specimens of Brady and 

 Norman. 



