ISOPODS OK NORTH AMERICA. 



467 



I 



lOLELLA SARSI, new species. 



Hod}^ twice as wide as long, 5 nun.: lOi mm.; surface densely cov- 

 ered with short, stifl' hairs. 



Head wider than long, 2 nmi.: ?> nnn. Front without rostrum; 

 anterior margin nearly straight, with only a small, median obtuse 

 point. Latei'al margins ])i-oduc(Hi in an anterior lobe bearing three 

 feeble spines and a smaller, almost inconspicuous lobe also armed with 

 three feeble spines. Antero-lateral angles rounded. Eyes moderate!}' 

 large, round, composite, situated close to the lateral niiirgins. The 

 lirst pair of antenna' have the basal article of the peduncle large and 

 dilated; the second article is half as long and about half as wide; the 

 third article is a little U)ngei' than 

 the second. The tlagellum is com- 

 posed of numerous short articles. 

 The second pair of antenna^ are 

 broken at the fourth article of the 

 peduncle, and the distal parts are 

 lost. There is a distinct scale out- 

 side the third article. The articles 

 of the peduncle, as well as the an- 

 tennal scale, are beset with spines. 



The tirst segment of the thorax- 

 has both the anterior and the pos- 

 terior angles produced in long, nar- 

 row processes, with the epimeron, 

 consisting of a single, narrow pro- 

 cess, situated })etween the two. 

 The second and third segments of 

 the thorax have the anterior and the 

 posterior margins produced into 

 long, narrow processes, with the 



epimeron, consisting of two long processes, situated between the two. 

 The fourth segment has the anterior portion only produced in a long, 

 narrow process, with the epimeron produced in two processes, and 

 situated in the posterior emargination of the segment. The fifth, 

 sixth, and seventh segments have the anterior ])art j)roduced and 

 gradually increasing in width, with the epimeron situated in the pos- 

 terior emargination of the segment. The lateral processes of the 

 segments, as well as the epimera, are ))eset with spines. 



The abdomen consists of a large terminal segment, with two short 

 segments anterior to it, evident onlv in the middle part, being covered 

 at the sides by the seventh thoracic segment. 



The terminal segment is broader than long, ;> mm.: 4i mm. The 



Fk;. 523. — Iolei.la sarsi. 



