62 Some Crustacea of Natal 
ISOPODA ANOMALA or APSEUDACHA. 
Famity TANAIDA. 
Genus TANAIS, Milne Edwards. 
1828. Zanais, Milne Edwards, Ann. Sci. Nat., ser. 1, vol. xiii, p. 288 
TANAIS PHILETERUS, Stebbing. 
1904. Zanais phileterus, Stebbing, Spolia Zeylanica, vol. ii, pt. 5, 
Pelgeplen 2: 
A specimen about 1°5 mm. long closely agrees with the description 
and figures given in the report on ‘‘Gregarious Crustacea from Ceylon,” 
though in so small a specimen specific distinction must be rather 
uncertain. It shares the character of a four-juinted uropod with four 
other species named in the report above mentioned. Small as it is, 
it suffices to add a genus to the gathering from the sponge Cerao 
chalinus. 
Genus LEPTOCHELITA, Dana. 
1849, Leptochelia, Dana, Amer. J. Sci., ser. 2, vol. viii, p. 425. 
LEPTOCHELIA DUBIUS (Kroyer). 
1842. Tanais dubius, Kroyer, Naturhist. Tidsskrift, vol. iv, pp. 178, 
182, figs. 20—22. 
1896. Leptochelia dubia, Stebbing, Ann. Nat. Hist., ser. 6, vol. xvii, 
Deka: 
1905. JZ. d., H. Richardson, Bull. U.S. Nat. Mus., no. 54, pp. 23, 
28, figs. in text. 
In the yield of the sponge Cerao chalinus were contained two 
specimens apparently referable to this species of the genus Leptochelia, 
a male about 3 mm. long and a female rather shorter. The first 
antennex are very different in the two sexes, especially in the flagellum, 
which is quite inconspicuous in the female, but in the male has six 
