studies on marine Ostracods 441 



Asterope teres, G. S. Bkady and A. M. NORMAN, 1896, p. 636, pi. L, figs. 7-10, pi. LII, figs. 20, 21. 



Type species: Asterope elliptica A. PlULIPPI, cf. below. 



Divergences from the genus Asterope, G. \\. MCller, 1912: 



The following species are included in this genus by this author, but are excluded by me: 



Cypridina Adamsi, W. Baird, 1847. 



Asterope Arthuri, T. Stebbing, 1900. 



Cyclasterope fascigera, G. S. Bhady, 1902 a. 

 Hendersoni, G. S. Bhady, 1897. 



Asterope Hilgendorfi, G. W. Mri,i,ER, 189(). 

 „ lichenoides, G. S. BraiiY, 1902 a. 



Species which,!, contrary to G. W. Mt'LI.ER, I include in this genus: 



Cypris himaculata, H. Nb:olet, 1849. 



Cypridina nitidula, Fr. MOeeer, 1870. 



The two last-mentioned species are put by G. W. MOller under the heading: ,,Cypri- 

 dinidarum genera dubia et species dubiae." In spite of the incompleteness of the original 

 description, there can scarcely be any doubt that Cypridina nitidula really belongs to Asterope 

 in the sense that this genus has been taken in the present work. (This form is placed together 

 with the forms in this group bv G. W. MOLLER, 1894.) But C. himaculata is doubtful. 

 Everything indicates, however, that this species too belongs to this unit. 



Genus Cyclasterope: — 



For description see below. 



For reasons that are best seen in the historical resume given above \y\). 438, 439 it seemed to 

 me necessary to give this genus quite another scope than G. W. MOller had given it in 1912. 



Besides the species C. fascigera, re-described by me below, the following species are 

 probably to be included in this genus: 



Cyclasterope Hendersoni, G. S. BRADY, 1897, p. 86, pi. XV, figs. 1—12. 



Asterope Hilgendorfi, G. \\. MCller, 1890, p. 241, pi. XXV, fig. 15, pi. XXVI, figs. 8, 20, 



pi. XXVII, figs. 4-6, 17. 



Nor does it seem impossible to me that Asterope Arlhuri, T. Stebblng, 1900, p. 660, 

 pi. LXXII, A should be included in this genus, but the position of this species is somewhat 

 uncertain. (It is described from a male larva.) 



Type species: Cyclasterope Hendersoni, cf. p. 438 above. 



It was necessary to set up two new genera. These have been given the names Cydoleberis 

 and Asteropteron. 



Genus Cycloleberis:* — 



Diagnosis: — The shell, seen from the side, is rounded and has no decided 

 posterior corner and no decided sculpture. 



Second antenna: Exopodite: The natatory bristles have a strong e(iuipment 

 of spines; the basal spines are very powerful. Entlopodite: This has rather numerous bristles 

 on the first joint. 



* Fro.Ti y.vy./.o; = rycio and /.f^i/yij - shell. 

 Zoolos bidrag, XIppsila Siipp! -1111 I 5'" 



