362 



MR. G. S. BRADY'S MONOGRAPH OF 



a. Seta of lower antenn(B plumose, reaching about as far as, or only slightly beyond, the apex of the 



terminal claws. 



* Second foot terminating in a short hooked claw, and one or no^'e mods? ately long setee 



1. Cypris pusca, Straus. (Plate XXIII. figs. 10-15.) 

 Cypris pilosa (?) , Miiller, Entomostraca, p. 59^, tab. vi. figs. 5, 6. 



fusca, Straus-Durckheim, Memoires du Mus. d^Hist. Nat. vii. p. 59, tab. i. figs. 1-16 [fide Baird) ; 



Bairdj Brit. Entom. p. 154, tab. xix. fig. 7. 

 oblonga, Brady, Ann. & Mag. Nat. Hist. (1864) vol. xiii. p. 59, pi. iii. figs. 1-4; and Trans. Tyne- 



side Nat. Field Club, vol. vi. p. 104, pi. ii. figs. 1-4. 

 Candona hispida, Baird, Brit. Entom. p. 161, tab. xix. fig. 4. 



Carapace * oblong, oval ; extremities rounded, the posterior somewhat narrowed : 

 dorsal margin gently arched ; ventral slightly sinuated. Seen from above, the carapace 

 is broadly ovate, pointed in front and rounded behind ; the greatest diameter a little 

 behind the middle. End view suborbicular, somewhat angular above. The surface is 

 rather thickly covered with long, fine hairs, and almost always bears patches of a dull 

 furfuraceous character, apparently a desquamating epidermis; it is also superficially 

 marked, more especially in young specimens, with a wrinkled or reticulated pattern. 

 The colour is of variable shades of brown, with irregular transparent patches. Lucid 

 spots about seven in number, long and narrow, and arranged obliquely across the valve. 

 The abdominal rami are long and very slender, the terminal claws long and slender, sub- 

 equal ; marginal setae very near the apices of the rami. 



Length ys in., height in. f . / - 



This is one of the commonest of British species, occurring abundantly in ponds and 

 stagnant water. I do not, however, remember ever to have met with it in lakes or 

 streams. 



The form described by me under the name of C. ohlonga appears to be nothing more 

 than an unusually elongated variety of this species. Miiller's figures and description of 

 C. pilosa, not hitherto identified by authors with the present species, are so very charac- 

 teristic, that I feel little doubt that his specific name should be adopted on the ground 

 of priority. His figure is certainly somewhat too small in comparison with some other 

 species ; but much stress cannot be laid upon a difference of this kind. Yet, as the name 

 fusca seems now to be generally accepted by authors, I have not thought it desirable to 

 propose an alteration the correctness of which might be open to doubt. 



2. Cypris incongruens, Ramdohr. (Plate XXIII. figs. 16-22.) 



Cypris incongruens, Ramdohr, Ueber die Gattung Cypris ; der Naturforsch. Freunde zu Berlin Magazin, 

 2. Jahrg. 1808, p. 86, tab. iii. figs. 1-12, 15, 16, 18-30 {fide Lilljeborg) ; LiUjeborg, De Crust, ex 

 ord. trib. p. 119, tab. ix. figs. 6, 7, tab. xi. figs. 1-4, tab. xii. fig. 6. 



aurantia, Baird, Brit. Entom. p. 159, tab. xix. fig. 13. 



* The first clause of the specific descriptions refers in all cases to the lateral view of the carapace, 

 t The dimensions, and, indeed, all other portions of the specific descriptions, must in all cases be taken as applying 

 to the female, unless otherwise stated. ^ 



