184 



DISCOVERY REPORTS 



Nototropis villosus (Bate) (Fig. 113). 



Bate, 1862, p. 135, pi. xxvi, fig. 1. 

 Stebbing, 1906, p. 334 (species obscura). 



Typical form 

 Occurrence: St. WS 89. Tierra del Fuego. 1 $ 19 mm. 



Description. Rostrum extending to half length of 1st joint of antenna 1. Head 

 dorsally carinate, antero-lateral angle rounded, post-antennal angle rounded-quadrate. 

 Eyes oval dark. Peraeon segments 1-7 all carinate, but not posteriorly toothed. Side- 

 plates 1-4 deep, oblong, 1 and 2 rounded below, margin serrulate and spinulose, 3 and 



Fig. 113. Nototropis villosus (Bate), a. Head. b. Gnathopod 1. c. Peraeopod 2. 

 d. Peraeopod 3. e. Peraeopod 4. /. Peraeopod 5. g. Telson. 



4 subquadrangular below, lower margin of 4 slightly concave, antero- and postero- 

 inferior angles serrulate and spinulose. Side-plates 5-7 shallow, anterior lobe of 5 and 

 6 very small, anterior and posterior corners serrulate and spinulose. Pleon segments 

 1-5 + 6 carinate, the carina produced to a tooth only on segment 4, which has the usual 

 little notch. Postero-inferior angles of segments 1-3 quadrate, each with an oblique 

 keel running out to the short acute point, lower margin of segment 1 setose, of segments 

 2 and 3 spinulose, the spinules set in little groups of 2-3 just within the margin. Telson, 

 lobes tapering to subacute apices, each with a spinule in the apical notch. 



Antenna 1, 2nd joint longer than 1st, 3rd considerably shorter, flagellum 31-32- 

 jointed, peduncle and flagellum with setae on lower margin. Antenna 2 about as long 

 as antenna 1, 4th joint slightly longer than 5th, flagellum about 20-jointed, peduncle 

 and flagellum setose, but not densely. The villose pads described by Bate in the S are 

 absent in $. 



