STENOTHOIDAE ,, 3 



Occurrence: i. St. MS 67. South Georgia. Twenty-six specimens, incl. ovig. $$, 2-275 mm - 



2. St. MS 74. South Georgia. Eleven specimens, incl. ovig. $$, 2-2-5 mm - 



3. East Cumberland Bay, South Georgia. 30. xii. 26. n-36m. Twenty-eight 

 specimens, incl. ovig. $?, 2-2-5 mm - 



Remarks. Chilton in a footnote says his species may be the same as Chevreux's, but 

 refers to the difference in the mandibular palp. The difficulty of determining whether 

 the mandibular palp is really degenerate, makes it inadvisable to recognize two species 

 separated by such a minute difference. One of the present specimens was dissected, 

 and one could not be certain that the palp was 3 -jointed ; even Chevreux's figure shows 

 a little nick on both sides of the palp, indicating the junction of the 1st and 2nd joints. 



Distribution. Petermann Island, 3 m.; South Orkneys, 9-10 fathoms. 



Thaumatelson cultricauda, n.sp. (Fig. 62). 



Occurrence: St. MS 67. South Georgia. 1 ovig. $ 3 mm. 



Description. Close to walkeri, Chilton. Pleon segment 3 with a posterior medio- 

 dorsal tooth, slightly turned up but not up- 

 standing, flanked on each side by a much smaller 

 blunt denticle. Telson elongate, apically slightly 

 upturned, dorsal edge sharp, not thickened. 



Antenna 1, 1st joint produced on upper apex. 



Gnathopod 1 similar to that of zvalkeri, but 

 6th joint more slender, twice as long as broad. Fig. 62. Thaumatelson cultricauda, n.sp. 

 Gnathopod 2 similar to that of walkeri, but 6th pleon segments 3-6 and telson. 



joint parallel-sided, z\ times as long as wide. 



Remarks. This may prove to be the ? of zvalkeri, but Chilton did not state the sex of 

 the specimens he examined. The telson, however, would seem to indicate a separate 

 species. 



Family STENOTHOIDAE 



Stebbing, 1906, pp. 192, 725. 



Genus Stenothoe, Dana. 



Stebbing, 1906, pp. 192, 725. 



Stenothoe sp. 



Occurrence: St. 5. Tristan da Cunha. 2 $$ (1 ovig.) 2-3 mm. 



Remarks. As both specimens are ?$ the species is unidentifiable, but a brief resume 

 of the characters may be given. 



Back not carinate. Eyes present. Maxillipedwith the 4 joints of the palp together equal 

 to the length of the outer plate, 1-3 broad and stout, 3rd bulbous, 4th rapidly narrowing 

 from a broad base to a fine acute point. Gnathopod i, 4th joint produced to end of 5th. 

 Palm defined in both gnathopods. Peraeopod 3, 2nd joint narrow. Fourth joints of 

 peraeopods 3-5 widened and produced. Peduncle of uropod 3 subequal to ramus, of 

 which the 2nd joint is straight. Telson with two spines on either side. 



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