TANAIDACEA AND MARINE ISOPODA FROM JUAN FERNANDEZ 54 1 



joints are faintly indicated. The relation between the lengths of the peduncular 

 joints and the flagellum is 7:9:4:5:6:2. 



Mandibles normal. 



1st maxillae of the form usual in the genus, with about 7 saw-like teeth. 



2nd tnaxillae (fig. 7 b) coalesced with the lower lip. Distally on the 

 outer margin there is one strong seta on each maxilla. 



Lower lip distally cleft into 2 acute, awl-like lobes. 



The viaxillipeds (fig. 7 c) have on the last joint a small terminal tip — 

 not separated as a distinct joint. 



The 1st pereiopods (fig. 7 d and 7 e) are very strong. 2nd and 3rd joints 

 of about equal length. Propodus very broad, suboval, about ^/g as broad as it is 

 long. Anterior edge convex, posterior edge a little concave. On the posterior 

 side there are 7 submarginal setae next to the proximal part of the lower 

 margin. 



2nd— ^th pereiopods (fig, 7 f). The lower margin of propodus has two 

 rows of setae with 5 setae in each row. 



^th — yth pereiopods (fig. 7 g). 2nd joint a little longer than the 3rd, 

 which is a little longer than the 4th and 5th together. These two joints are 

 together almost as long as the 6th joint. The merus and carpus are of about 

 equal length. The merus has its upper distal corner produced and acute, the 

 carpus has its distal margin almost rounded. 



On the 6th pereiopod (fig. 7 g) the carpus has two strong setae on its 

 lower margin and two long and slender setae next the lower distal corner, 

 and the propodus has 2 strong setae on the lower margin. 



1st pleopod (fig. 8 a). Basipod with its inner distal corner produced and 

 acute. Exopod single-jointed with inner margin straight and outer margin 

 considerably convex. Apex broadly rounded. The exopod is comparatively 

 short and is only furnished with 3 terminal setae. 



2nd pleopod (fig. 8 b). Exopod oval, single jointed, about half as broad 

 again as the endopod, with 8 setae on the distal and outer mangin. Endopod 

 subrectangular with 3 setae on the rounded distal margin. 



jr^ and ^th pleopods. Like the second. 



Uropods (fig: 8 c). Endopods reaching about as far as the telson. First 

 joint with a longitudinal row of long setae on the lateral margin. Second 

 joint oval, but with narrowly rounded end, dorsally concave, ventrally convex, 

 about half as long again as it is wide. Exopod with its outer margin convex, 

 not sinuated near apex. 



Fam. Corallanidae. 



Genus Lanocira Hansen 1890. 



Lanocira hirsuta n. sp. — PI. 20, figs. 7 — 10; text figs. 9, 10, 



22 individuals, adult males and females and immature specimens. Greatest 

 length of specimen 9 mm (one male filled with food). 



Loc. Juan Fernandez, Masatierra, 20—35 m and 30—45 m. 



35 — 29232. The Nat. Hist, -of Juan Fernandez and Easter Isl. Vol. III. 



