iS° 



DISCOVERY REPORTS 



semiserrato . Antenna i with uncinate tooth on inner apex of ist joint. Gnathopod i 

 with 6th joint slightly widening distally. 



I think it more than likely that these specimens are specifically the same as the 

 Belgica specimens, but if so I consider that they deserve specific rather than varietal rank. 



Distribution. 70 48' S, 91 51' W and 71 19' S, 87 37' W, 400 m. 



Syrrhoe nodulosa, n.sp. (Fig. 88). 



Occurrence: 1. St. 170. South Shetlands. 5 ?? (2 ovig.) 13-141x1171. 



2. St. 181. Palmer Archipelago. 1 $ 14 mm., 1 $ n mm., 1 ovig. $ 14 mm. Types. 



3. St. 182. Palmer Archipelago. 1 ? 12 mm. 



4. St. 195. South Shetlands. 3 $$ (2 ovig.) 11-13 mm. 



Description. Integument not indurated, but firm, minutely shagreened. Head 

 vaulted, rostrum reaching to just beyond middle of ist antennal joint. Eyes prominent, 



Fig. 88. Syrrhoe nodulosa, n.sp. a. General view. b. Dorsal view of pleon segments 1-4. 



ovoid, dorsally not quite contiguous. Peraeon segments 1 and 2 very short dorsally, 

 together equal to 3rd segment, following segments increasing in length. Back rounded. 

 Posterior margins of segments 4-7 more or less raised, prominent and, on segments 6 

 and 7, produced in a short medio-dorsal tooth, that on segment 7 with a tubercle in 

 front of it. Segments 6 and 7 each with a blunt but well-marked horizontal keel just 

 above junctions of side-plates; a similar keel or swelling also on segments 4 and 5 in 

 some specimens. Side-plates as in crenulata. Pleon segments 1-3 each with a medio- 

 dorsal blunt tubercle, followed by a projecting tooth on the hind margin, which seen in 

 dorsal view is notched ; whole posterior margin denticulate ; a blunt horizontal keel on 

 each segment continuing the line of those on peraeon segments 6 and 7 ; postero-inferior 

 angle of segment 3 quadrate. Pleon segments 4-6 dorsally rounded, posterior margin 

 of 4 denticulate. Telson elongate, cleft almost to base, lobes contiguous, tapering to 

 acute, minutely notched apices. 



Antenna 1, ist and 2nd joints subcqual, upper margin of ist sharply keeled, setose, 

 distal margin on inside with upcurved tooth, 2nd more slender, 3rd just over half 



