AMPRIPODA. CHILTON. 



81 



The merus of one of the peraepoda, I think the fifth, is 

 considerably broadened, as in the male specimen from 

 Gough Island, collected by the "Scotia," which I referred 

 with much doubt to E. afer (Stebbing) in 1912 : I have since 

 pointed out (1920, p. 7) that this should rather be 

 E. dentatus (Chevreux). 



Stebbing' gives the distribution of E. maculatns as 

 "Arctic Ocean and North Atlantic." Its occurrence in 

 Bass Strait at the south of Australia greatly extends its 

 range. 



EURYSTHEUS ATLANTicus (Stebbing). 

 Eurystheus atlanticus, Stebbing, 1906, p. 611. 



Locality. Sanders Bank, Kangaroo Island. S. Australia, 

 28 fathoms, one specimen, female, about 8 mm. long (Reg. 

 No. E. 4855) ; Shoalhaven Bight, N.S.W., one, probably 

 male (mounted) (Reg. No. E. 4852). 



These specimens agree closely with Stebbing 's description 

 and figures in the shape of the lateral lobe of the head and 

 of the eye, except that the eye is almost confined to tbe 

 lateral lobe, its narrow neck being nearly obsolete The 

 eye is still red in the spirit specimen. 



The second antenna has the upper margin of the first 

 joint of the peduncle concave to accommodate the lateral 

 lobe as described by Stebbing. The gnathopods agree 

 closely and so do the peraeopoda, except that the basal joint 

 of the fifth has the posterior margin more distinctly serrate 

 than is shown in the figure of the "Challenger" specimen. 



E. atlanticus was originally described from the Atlantic 

 Ocean. It has been taken with E. afer in South Africa, 

 and Stebbing thinks it is perhaps a variety of that species. 

 The Australian specimens agree so well with the figures 

 given in the "Challenger" Report of E. atlanticus that I 

 prefer to leave them in the meantime under that name. 



EURYSTHEUS THOMSONI (Stebbing). 



(Fig. 13 a c.) 

 Eurystheus thomsoni, Stebbing, 1910, p. 614. 



Locality. 40 miles W. of Kingston. South Australia, 30 

 fathoms. Two specimens, male and female (Reg. No. E. 

 4862). 



