RECENT BRITISH OSTRACODA 



3 7 5 







other British Cypris, and I cannot identify it with any of the numerous species described 

 by continental authors. 



21. Cypris Joanna, Baird. 



Nat 



fig. 5. 



■ 



Shell rounded, ovate, narrower anteriorly than posteriorly, of a brown col 



i 



an orange mark across the back of the shell and the lower margin. Shell best 1 all round 

 with rigid hairs, and covered with minute black points or dots. Approaches the C.piloso 

 of Muller, but is smaller, and is otherwise distinguished from it by the orange mark 

 across the back, and by not being glabrous, but marked all over with black, roughish- 

 looking points. It is a little longer than C. minuta. Uab. Pool of water on one of the 

 Lammermuir Hills, near Abbey St. Eathans, Berwickshire; August 1836." — Dr. Baird. 

 I have never found this species, nor seen specimens of it. Can it be a moorland form 



of C 



Genus 2. Cypmdopsis, Brady 



* 



Like Cypris, except that the postabdominal rami are rudimentary, consisting of two 

 slender setiform prolongations (Plate XXXVI. figs. 9, 10), thickened below and rifling 

 together from a common base. The second feet are terminated by a short hooked daw, 



and two moderatclv long setse. 



The three species belonging to Cypridopsu have not much in external appearance to 

 separate them from section e of the preceding genus ; hut the structure of the abdo- 

 minal rami is of itself a character of sufficient importance to form a generic distinction. 

 The characters of the second feet are the same as found in section a of the genus Qrpm. 

 The males have not yet been met with. 



1. CrpRiDOPSis vidua (Muller). (Plate XXIV. figs. 27-30, i<5.) 



Cfepm vidua, Miilkr, Entomostraca, p. 55, tab. iv. fig». 7-9 ; Baird, Brit. Entom. p. lAt.xLx.fi 10,11; 



Lilljeborg, De Crust, ex ord. trib. p. Ill, tab. x. figs. 10-12. 



sella, Baird, Brit. Entom. p. 158, t. xix. figs. 5, 5a. 

 Monoculus vidua, Jurine, Hist, des Monocles, p. 175, pi. xix. figs, o, 6. 



Shell ovoid, very tumid: greatest height in the middle, equal to two-thirds of the 

 length ; extremiti J rounded/the anterior much the broadest. Dorsal margin ar he 1 

 and highest in the middle ; ventral margin very slightly smuated. S entom above 

 the carapace is ovate, exceedingly tumid, narrowed m front and broad y ounded 

 behind, widest a little behind the middle , length a on ^J^J^ 

 breadth. The end view is very broad m proportion to its M,". 

 «*, to side being nearly one-fifth more than that from ^ ape »££» 

 lower antenna, reach much beyond the apices of the a ^ 



appendage of the third joint bears at its extremity -. "jJJ^Sh ;md mostly marked 

 (%• 46). The limbs are uniformly very robust. The shell is s 



*«i small impressed puncta : colour «*]**** ^ ^ anterior band is the 

 tersely from the dorsal margin to the middle of each vah e. 



* Intellectual Observer, vol. xii. !>• ' > '• 



