agree closely with specimens of similar size from Port Jackson, New South Wales, the type-locality. In none of them are any of the segments produced into definite dorsal teeth, but all have the posterior margin of the third pleon segments serrate, as described by Stebbing for Eusiroides caesari, though in one or two instances the teeth are rather indistinct, thus approaching the condition found in E. crassi.

The species has been recorded from South Africa by Barnard, from Ceylon by Walker, and from the Gambier Archipelago by Chevreux. Of the two specimens from the latter locality, one was a female bearing young, though only 4 mm. in length. Of them Chevreux says, “Chez ces exemplaires, le bord postérieur des plaques épimérales du dernier segment du métasome, moins convexe que chez le type, ne présente que des crénelures peu distincts.”

If Bovallia gigantea Pfeffer is considered as belonging to the same species, corresponding to the form described by Stebbing under the name Eusiroides crassi, then the range of the species is extended to the subantarctic and antarctic seas to the south of South America.

I have been able to compare my New Zealand specimens with examples of Eusiroides della-vallei Chevreux from Banyuls-sur-mer, on the south coast of France, and can find little difference between the two.

Localities.—Off Three Kings, 60–65 fathoms (Chilton); Cook Strait cable, off Oterangi Bay (H. B. Kirk); Cook Strait cable (Captain J. W. Grey); north-west of Cape Maria van Diemen, 50 fathoms (Chilton); Moeraki, east coast Otago (Chilton); Otago Harbour, surface (G. M. Thomson); Lyttelton Reef (R. M. Laing); Lyall Bay (R. M. Laing).