150 Annals of the South African Museum. 
Bell-Marley). (S.A.M. Nos. A165, A166, A2872, A2924, A2957, and 
A3851 respectively.) 
Geogr. Distribution: Arctic and North Atlantic Oceans; Norway, 
30-150 fathoms (Sars); Britain (Montagu); France (Chevreux) , 
Mediterranean (Costa, Della Valle, Chevreux); Azores (Barrois) ; 
Ceylon (Walker); Seychelles, 29-150 fathoms (Walker) ; Wasin, 
British East Africa, 10 fathoms (Walker); Red Sea, low-tide 
(Walker); McMurdo Sound, Antarctic (Walker); South Georgia 
(Pfeffer: DL. antarctica); New South Wales (Haswell, Stebbing: L. 
commensalis) ; Cape Agulhas, 150 fathoms (Stebbing: L. miersz) ; 
South Orkneys (Chilton); Gulf of Mexico, 13-30 fathoms (Pearse) ; 
Bermuda (Kunkel). 
It is impossible to recognise Stimpson’s L. affinis, but itis probably 
referable to this species or to L. richiardii. In the latter case, and if 
Iam correct in my identification of the Cape specimens, richiardii 
Lessona 1865 would become a synonym of afinis Stimpson 1855. Far 
preferable is it, in my opinion, to drop affinis altogether. 
Possible other synonyms of this species are : 
L. grandimana Stimpson 1853. Bay of Fundy. 
L. diemenensis Haswell 1880. Tasmania. 
L. gracilis Haswell 1880. ‘Tasmania. 
L. brevidigitata Miers 1884. Torres Straits. 
LEUCOTHOE RICHIARDII Lessona. 
1865. Leuwcothoe richiardii Mich. Lessona, Atti. Soc. Ital. vol. 8, p. 426. 
18938. BS as Della Valle, lc. p. 654, pl. 3, fig. 4, plo; 
fig. 21. 
1906. = ‘ Stebbing, l.c. p. 167. 
1910. Pe ‘ Chevreux, Mém. Soc. Zool. Fr. vol. 23, p. 196. 
Body rather broad. Antero-lateral angles of head rounded. Eyes 
large, subrotund. Side-plate 1 widened below, 2 a little longer Alban 
deep, 3 deeper than long, 4 about as long as deep, antero-inferior 
angle rounded, inferior margin strongly angular in @.  Postero- 
inferior angles of 2nd and 3rd pleon segments acutely produced, with 
sinus above in the 3rd. 
Telson a little more than thrice as long as broad, apex minutely 
trifid, the middle tooth the largest. 
First antenna reaching to 3rd peraeon segment, Ist and 2nd joints 
subequal, 3rd very short, flagellum shorter than 2nd peduncular joint, 
ca. 12-jointed. 
