ARAEOSTERNUS WIENECKII. "133 



like the carpocerite ; terminal filament or procerite a 

 little shorter than the carapace, multiarticulate and pro- 

 vided with long yellow verticilated hairs. Internal an- 

 tennae situated a little below the external ones, shaped 

 entirely as in Palinurus Fabr. (s. s,); the basal joint , that is 

 the longest of all, extends to the middle of the carpo- 

 cerite of the external antennae ; the second and third joints 

 are of equal length, together as long as the basal joint; the 

 two terminal filaments very short , the longer internal mul- 

 tiarticulate , a little shorter than the length of the two 

 terminal joints and hairy on both margins. — Epistome 

 of a transverse rectangular form , the anterior margin wi- 

 dely emarginated in the middle, with a median processus, 

 which presents a narrow small notch ; the emarginated part 

 of the margin is dentate, the remaining lateral parts 

 minutely crenulate ; external surface of the epistome with 

 many small tufts of minute hairs. — External maxilli- 

 pedes reaching to the middle of the carpocerite of the ex- 

 ternal antennae, quite shaped as in PaUnurus Fabr. s. s., 

 second joint (which corresponds with the basipodite of the 

 ambulatory legs) provided with a slender exopodite, the 

 flagellum of which reaches to the middle of the fourth 

 joint , third joint trapezoidal , Jonger than broad , with the 

 anterior margin broader than the posterior, and having 

 the inner margin of the narrow internal surface armed 

 with nine or ten sharp teeth , which gradually increase in 

 size anteriorly ; internal surfaces of all the joints furnished 

 with numerous long yellow hairs. Sternum having an 

 elongate rectangular form , constituted by five segments , 

 the first or anterior segment being a little less broad than 

 the second , the second , third and fourth segments being 

 nearly equal in breadth , the fifth again very narrow , less 

 broad than the first, with the two sides of its surface re- 

 flected a little towards each other. Ambulatory legs all 

 monodactyle , the first pair much thicker and stronger than 

 the others , reaching a little beyond the peduncle of the 

 external antennae; coxopodites inserted on the anterior 

 Notes frozn the Leyden JVIuseuizi, Vol. III. 



