62 DISCOVERY REPORTS 



Remarks. The above distinctive characters seem sufficient to justify a separate 

 species. L. ctenophora was obtained by the 'Gauss' at her winter station, approx. 

 8ai° E, 66° S. 



Lepidepecreoides, Brnrd. 



Barnard, 1931, p. 426. 



Integument indurated. Body scarcely carinate anteriorly, but distinctly so posteriorly. 

 Side-plates 1-5 deep; the 5th almost as deep as 4th, solid anteriorly, thin posteriorly, 

 not grooved for reception of 4th ; 6th with a rather wide excavation between the anterior 

 and posterior lobes; 7th longer than deep. Telson cleft to base. First joint of antenna 1 

 not carinate or apically produced. Epistome straight in profile, not expanded; upper 

 lip gibbous. Mandible with palp inserted opposite molar, 2nd joint of palp not very 

 elongate. Lower lip with lobes apically rounded. Gnathopod 1, 6th joint widening 

 slightly distally, palm oblique. Gnathopod 2, 6th joint rather broadly oval, subchelate. 

 Peraeopod 3, 2nd joint abnormally thick, angularly expanded in front and behind. 

 Peraeopods 4 and 5, 2nd joints ovate, not abnormally thick. A single accessory branchia 

 on both segments 5 and 6. 



Remarks. From its close allies— Lepidepecreum, B. and W., Lepidepecreopsis , Steph. 

 1925, and Lepidepecreella, Schell— this genus is easily distinguished by the unusually 

 great depth of the 5th side-plate, and the unexpanded epistome. The mouth-parts agree 

 with those of Lepidepecreopsis, the mandibular palp being inserted much more forward 

 than in the other two genera. 



Lepidepecreoides xenopus, Brnrd. (Fig. 24). 

 Barnard, 1931, p. 426. 



Occurrence: 1. St. 177. South Shetlands. 1 $ 11 mm. 



2. St. 181. Palmer Archipelago. 1 $ 9 mm. Type. 



3. St. WS 33. South Georgia. 1 juv. 4-5 mm. 



Description. Integument indurated ; when seen by transmitted light it has a honey- 

 comb reticulation, but when seen in an oblique reflected light each hexagonal mark 

 seems to have a raised border so that the integument appears strongly scabrous. Head 

 with antero-lateral angle quadrate. No eyes. Peraeon moderately compressed, scarcely 

 or feebly carinate, but dorsal profile indented at junctions of segments, especially pos- 

 teriorly. Side-plates deep; 1-4 deeper than their segments, setulose on their anterior 

 margins, 1-3 oblong, with a denticle at postero-inferior angle, 4 also oblong with the 

 whole hind margin excavate for the reception of the deep 5th side-plate, which is very 

 solid in front portion but with a crescentic hollowing posteriorly for reception of 2nd 

 joint of peraeopod 3, hind margin and lower part of anterior margin setulose ; side-plate 6 

 slightly deeper than long, with lower margin excavate between anterior and posterior 

 lobes; side-plate 7 longer than deep, ovoid; hind margins of 6 and 7 setulose. On 

 segments 5, 6 and 7 just above the junction of the side-plates there is a rounded nodulose 

 prominence. Pleon carinate, dorsal profile on each of segments 1-3 undulate, carina 



