REV. A. M. NORMAN ON THE CRUSTACEA. 15 



inferior half of the truncated apex of the propodos, immersed in 

 a dense tuft of hairs which spring from the upper portions of the 

 apex, and from the sides of the propodos. Pereiopocls having 

 large falciform dactyli, which are furnished on their inner side 

 with simple hairs. Body slender; basos of all the legs very 

 small; posterior angles of first three abdominal segments pro- 

 duced backwards into conspicuous teeth. Telson squamiform. 

 Uropods of first and second pair having their branches margined 

 and terminated by large spines ; uropods of last pair two-branched, 

 small, scarcely reaching beyond telson, or the basal joint of pre- 

 ceding pair ; outer branch tipped with long simple hairs ; inner 

 branch terminating in a single spine. Length a third of an inch. 

 A single specimen was dredged in July, 1864, off Holy Island ; 

 but the species was procured by me more abundantly in about 

 seven fathoms water at Balta Sound, Shetland, in June, 1863. 

 Unciola planipes is apparently nearly allied to Unciola lencopes of 

 Kroyer, which is a native of South Greenland. 



Order. OSTRACODA. 

 Fam. cyprim:. 



Genus. CYTHERE, Mutter. 

 Cythere debilis. Jones. PI. Y, figs. 5-8. 



Cytheridea debilis, Jones, Tertiary Entomostraca (Palason. 

 Soc. Trans.) p. 43. PI. YI, fig. 18. 



Cythere Bradii, Norraan, M.S. Brit. Assoc. Report for 1864. 



Oblongo-ovate, of nearly equal height throughout ; length to 

 breadth as two and a half to one, very tumid. Yentral margin 

 nearly straight, very slightly incurved a little before the middle, 

 dorsal margin subparallel to ventral, having a nearly equal slope 

 at the two extremities, the anterior of which is well and equally 

 rounded, while the posterior, which is slightly the wider of the 

 two, and a little more produced below, has the dorsal curve much 

 longer than the ventral. Lucid spots, consisting of a transverse 

 row of four placed close to each other, and two others at some 



