101 
in M. typica. The uropoda (fig. 7, U.) are half as long as the 
caudal segment; the second joint 4 times as long as the first. 
Lenght 8 mm. The colour is (in alcohol) black-brown, except 
the caudal segment, which has no colour and is pellucid. 
Though M. Tjaljiensis is known but from a single, verj imper- 
fect specimen, it may be seen, that it is very closelv allied to M. 
longicornis, M. Murrayi and a third species not mentioned above, 
viz. M. oceanica Tattersall (Fisheries, Ireland, Sci. Invest. 1904, 
