190 Mil. G. r. FAREAN ON 



Paroithona pulla, sp. n. (PI. XXIX. figs. 1-9 ; PI. XXXI. 



fig. 1.) 



Female (PI. XXIX. fig. 1).— Length •40--43 mm. ; cephalo- 

 thorax -23 mm. ; abdomen (PI. XXIX. fig. 3) (including Th. 5) 

 •19 mm., proportional lengths of abdominal segments and 

 f urea 8 : 20 : 9 : 1 1 : 6 : 6. Rostrum absent, front of cephalon 

 (PI. XXXI. fig. 1) rounded as in 0. hehes. Furca with the 

 two longest setse superposed on the inner half of the terminal 

 margin. 



1st antenna (PI. XXIX. fig. 2) reaches to the end of the 2nd 

 thoracic segment ; proportional lengths of joints : 



12345 6 789 10 11 

 66957 12 474 4 6' 



The 3rd joint is divided into two by a partial jointing, and there 

 appears to be a small spine on the end of the 4th joint. 



2nd antenna (PL XXIX. fig. 5) rather small and slender, two- 

 jointed. 



Mandible (PI. XXIX. fig. 4) : second basal with a single large 

 terminal spine on the inner lobe and a much smaller spine some 

 distance away on either side of it ; endopodite bent outwards, 

 with two terminal and two much smaller lateral setae ; exopodite 

 with four subequal setfe. 



1st maxilla : structure not properly made out. 



2nd maxilla and maxillipede as in F. parvtola, of the usual 

 Oithona structure but rather small. » 



1st foot (PI. XXIX. fig. 6) with two-jointed exopodite and 

 endopodite, the division between the 2nd and 3rd joints of the 

 exopodite being only faintly indicated ; exopodite with 1.1.2 

 outer edge spines and 0.1.4 inner edge setfe, the terminal spine 

 considerably longer than the exopodite ; endopodite with 1 . 4 

 inner edge and 0.1 outer edge setae; 1st basal with an inner 

 edge and 2nd basal with an outer edge seta. 



2nd to 4th feet with three-jointed exopodites and two-jointed 

 endopodites. 



2nd foot (PI. XXIX. fig. 7) : exopodite with 1.1.2 outer edge 

 spines and 0.1.5 inner edge setae, terminal spine longer than 

 the exopodite ; endopodite with two inner edge, one terminal and 

 one outer edge setae on the distal end of the 2nd joint ; no setae 

 seen on the basal joints. 



3rd foot (PI. XXIX. fig. 8) : exopodite with 1.0.1 outer edge 

 spines and 0.1.5 inner edge setae ; there is a small tooth on the 

 middle of the outer edge of the 3rd joint ; terminal spine very 

 slender, longer than the exopodite ; endopodite as in 2nd foot ; 

 2nd basal with an outer edge seta, no seta on 1st basal. 



4th foot (PI. XXIX. fig. 9) : exopodite with 0.0.1 outer edge 

 spines and 0.0.5 inner edge setas, terminal spine longer than 

 the exopodite ; endopodite as in 2nd and 3rd feet except for a 

 stout feathered seta on the inner edge of the 1st joint ; 2nd 

 basal with an outer edge seta, no seta on 1st basal. 



