of the North Atlantic and of North-Western Europe. - 677 



Genus 1. — Saesiella, Norman, 1869. 

 (" Last Eeport Dredging, Shetland," Brit. Assoc. Eep., 1868 (1869), p. 293.) 



The female has the shell highly calcareous, usually roughly sculptured, 

 sub-rotund, no antennal sinus, a produced process at the infero-posteal corner. 

 Antennules five-jointed, second, third and fourth joints sub-equal, the fourth 

 terminated by three long and several short sette, but without a sensory append- 

 age, a long annulated seta taking its place. Antennae with the accessory 

 appendage reduced to a nodule bearing a single short seta. Mandible without 

 masticating process or masticating spines, the whole limb remarkably free from 

 setae; two terminal joints very short ; each of these and also the preceding joint 

 terminating in one strong curved unguis, the three ungues close together and 

 increasing in length successivel3^ The first maxillas have four lateral setose 

 lobes, the terminal joint is very short and broad, and at its extremity bears five 

 stout spine-like setee, which are ciliated on their edges, and spread out like the 

 fingers of a hand. The second maxillae bear three lobes and a one-jointed palp, 

 all furnished with setae but wholly without tooth-like organs or strong pectinated 

 setae ; vibratory lamina well developed. . Third maxillae very small, consisting of 

 a simple rounded lobe, setose at the edge ; no vibratory, lamina. Last vermiform 

 limbs of the usual form. Caudal laminae with few (6—7) ungues. 



This genus was established by A. M. N. in 1869, to receive a remarkable 

 ostracod which he had dredged in the Shetland seas. Since that time four 

 additional species have been described by G. S. B.,* from the South Sea Islands, 

 and we are now enabled to add a sixth from ofp tlie Soudanese Coast.f 



1. Sarsiella capsula, Norman. 

 (PI. LX., figs. 1-4, 18.) 



1869. Sarsiella capsula, . . Noeman, "Last Report Dredging among the 



Shetland Isles," Brit. Assoc. Rep., 1868, p. 293. 



1887. ,, „ . . Sabs, G. 0., "Nye Bidrag til Kundskaben om 



Middlehavets Invertebratfauna : iv. Ostracoda 

 Mediterranea," Archiv. for Mathem. og Natur- 

 vid., p. 57, pi. iii., figs. 5-7; pi. x., figs. 1-13. 



1894. ,, ,, . . MiJLLEE, G. W., "Die Ostracoden des Golfes von 



Neapel.," p. 214, pi. iv., figs. 4-6, 8-10, 22, 25, 

 27-29, 31, 33-35, 37, 48 ; i± viii., figs. 6, 7. 



* G. S. Brady, " Ostracoda collected by H. B. Brady in the South Sea Islands." — Trans. Eoy. Soc. 

 Edinbui-gh, vol. xxxv., 1890, pp. 516, 517. 



f Since -writing the above a seventh species, S. Icevis, has been described by G. "W. Miiller. 



TEANS. EOT. DUB. soc, N.S. VOL. V., PART XII. 5C 



