METOPIDAE 



Proboloides crenatipalmatus (Stebb.) (Fig. 60). 

 Stebbing, 18S8, p. 759, pi. xlii (?); 1906, p. 188. 



Occurrence: 1. St. 42. South Georgia. 3 $$ 11-13 mm., 3 immat. SS 8-10 mm. 



2. St. 123. South Georgia. 1 ovig. $ 11 mm. 



3. St. 140. South Georgia. 9 $$ 10-11 mm., 4 $? (1 ovig.) 10 mm., 2 juv. 6 

 and 8 mm. 



4. St. 144. South Georgia. 1 $ (anterior half only). 



5. St. 152. South Georgia. 1 immat. $ 7 mm. 



Description #. Resembling $, side-plate 3 beaded as in the other species, antenna 1 

 with flagellum 20-jointed, no accessory flagellum, antenna 2 with flagellum 16-jointed. 



Gnathopod 1, 6th joint shorter than 5th, of same shape as in typica but stouter, palm 

 with 3-4 spines near lower corner. Gnathopod 2 much stronger than in 9 ; in immature 



Fig. 60. Proboloides crenatipalmatus (Stebb.). a. Gnathopod 2 of adult $. b. Gnathopod 2 of 

 immature o . c. Gnathopod 2 of adult $. d. Gnathopod 1. 



ct 6th joint ovate, palm longer than hind margin, defined by an acute point, with a notch 

 bounded by two teeth in middle, rest of palmar margin smooth or feebly crenulate ; in 

 adult S palm still longer relatively to hind margin, defined by an acute tooth, with a 

 large angular notch in the middle separating a proximal tooth or cutting edge and a 

 distal tooth near hinge. 



Peraeopod 3 with 2nd joint distally lobed as in $. 



Remarks. Stebbing 's specimen would seem to have been an immature one. The 2nd 

 gnathopod of the present $ is here figured for comparison. The 1st gnathopod in $ is 

 likewise stronger than in Stebbing 's figure, the palm is slightly more transverse, and 

 the joint is definitely wider distally than proximally. 



Distribution. Magellan Strait; Tristan da Cunha. 



Proboloides porcellanus, n.sp. (Fig. 61). 



Occurrence: St. 51. Falklands. Fifty-three specimens 5-9 mm., inch ^c?, ovig. $? and juv., 

 from pharynx of large Ascidian. 



