CANDONA. 133 



Carapace, as seen from the side, elongated, greatest height situated near the middle 

 and equal to less than half the length, rounded in front; posterior extremity obliquely 

 rounded off above, subangular below ; superior margin arcuate, inferior gently sinuated in 

 the middle. Seen from above, ovate, widest in the middle, extremities evenly and rather 

 suddenly tapered, subacuminate, width rather less than the height. Shell surface smooth, 

 without sculpture of any kind. 



Length, -g^yth of an inch. 



Distribution. Recent. — Great Britain, Norway. 



Fossil. — Scotland : Duntroon, Cartsdyke, Paisley, Dalmuir, Dumbarton. 



Genus 7 — Candona, Baird. 



Like Cypris, except that the lower antennae possess no tuft of setae, and that the 

 second pair of jaws are destitute of a branchial appendage. The shell is usually longer 

 and narrower than that of Cypris. The animals of this genus have no swimming power, 

 and are very sluggish in their movements, living mostly at the bottom or burying them- 

 selves in the mud. 



L Candona albicans, Brady. Plate I, figs. 10 — 13. 



1864. Candona albicans, Brady. Ann. and Mag. Nat. Hist, vol. xiii, p. 61, pi. iv, 



figs. 6—10 ; and Trans. Tyneside Nat. F. C, 

 vol. vi, p. 107, pi. iii, figs. 6 — 10. 



1868. — — — Monog. Recent Brit. Ostr,, p. 381, pi. XXV, figs. 



' -~v^^*^ ., ■ 20 — 25, and pi. xxxvi, fig. 12. 



Shell oblong, subreniform, nearly equal in height throughout, height equalling one 

 half the length ; anterior margin well and evenly, posterior less boldly and rather 

 obliquely rounded; superior margin straight, inferior deeply sinuated in the middle. 

 Seen from above, evenly ovate, acuminate in front, narrowly rounded behind, greatest 

 width less than the height, situated in the middle. Surface of the shell closely and 

 rather coarsely punctate; colour whitish, often (in the fossil state) yellow from clay 

 stains. 



Length, -^th of an inch. 



Distribution. Recent. — England ; Fossil. — England : Hornsea, Whittlesea. 



