History of British. Entomostraca. 13« 



" Shell subovate, glabrous, ciliated at the margin, sublinear at 

 aperture. Valves rather convex, brown, with three white fasciae 

 — the posterior one lunated, middle one oblique, anterior one arched 

 — or, it may be described, valves white on dorsal margin, bound by 

 a brown belt, with two oblique brown spots in the disc." — Muller. 



Sp. IV. Cypris vidua, Plate V. Fig. 1 . Testa subglobosa, fas- 

 ciis tribus nigris transversis instructa. 



Habitat. Pond at Greenwich. Canal at Rugby, Warwickshire. 

 Si/nonimes, Cypris vidua, Muller, Zool. Dan. prod. p. 199, No. 2384. 1776. 

 Cypris vidua, Muller, Entomost. p. 55, tab. iv. fig. 7-9. 1785. 

 Mon. vidua, Gmelin, Syst. Nat. 3002, No. 42. 1788. 

 Mon. vidua, Manuel, Encyc. Method. Hist. Nat. Tom. vii. p. 726, No. 36, pi. 



264, f. 24-6. 1792. 

 Mon. viduatus, Fabricius, Entom. Syst. Tom. ii. p. 496. 1793. 

 Cypris vidua, Latreille, Hist. Nat. Gen. et Part, des Crust. &c. Tom. iv. p. 245. 



1802. 

 Mon. vidua, i?ees' Cyclopedia, Art. Monoculus. 1819. 

 Mon. vidua, Jurine, Hist, des Monoc. &c. p, 175, pi. 19, fig. 5-6. 1821. 

 Cypris vidua, Desmarest, Cons. Gen. sur les Crust, p. 385. 1825. 



Neither the figure given by Muller, nor that by Jurine, is quite 

 correct. The shell is of a somewhat globular form, a little sinuated 

 on under margin ; beset all round with dense, fine, short hairs ; of 

 a dull white colour, very distinctly marked by having three black, 

 somewhat zig-zag fasciae, running transversely across the shell, the 

 most anterior of the three being the smallest. The posterior mar- 

 gin is rather narrower than the anterior, ("though Muller makes it 

 the contrary,) but not so much so as is represented by Jurine. An- 

 terior feet provided with long filaments. 



Sp. V. Cypris Monacha, Plate V. Fig. 2. Testa antice trun- 

 cata, albo et nigro notata. 



Habitat Old Canal near Rugby, Warwickshire Newham Loch, Northum- 

 berland — Dr Johnston. 

 Synonimes, Cypris monacha, Muller, Zool. Dan. prod. p. 199, No. 2390. 1776. 

 Cypris Monacha, Muller, Entomostraca, p. 60, tab. v. fig. 6-8. 1785. 

 Monoc. Monachus, Gmelin, Syst. Nat. 3003, No. 44. 1788. 

 Mon. Monachus. Manuel, Encyc. Method. Hist. Nat. Tom. vii. p. 727, No. 41, 



pi. 266, f. 34-6. 1792. 

 Mon. Monachus, Fabricius, Entom. Syst. Tom. ii. p. 497. 1793. 

 Cypris Monacha, Latreille, Hist. Nat. Gen. et Part, des Crust. &c. Tom. iv. p. 247. 



1802. 

 Monoc. Monachus, Bees' Cyclop. Art. Monoculus. 1819 



Monoc. Monachus, Jurine, Hist, des Monocles, &c. p. 173, pi. 18, f. 13-14. 1821. 

 Cypris Monacha, Desmarest, Cons. Gen. sur les Crust, p. 384, pi. 55, f. 7. 1825. 

 VOL. II. NO. 8. K 



