600 " THETIS " SCIENTIFIC RESULTS. 



South Africa, described in 1908. The peculiarly-shaped large 

 eyes and the strongly dentate hind margin in the last three pair* 

 of peraeopods combine with other characters to make the last- 

 named species quite distinct from Costa's. 



Localities. — Off Coogee and off Wollongong, 55-56 fathoms. 

 The distribution is hereby greatly extended. 



M^^RA HAMIGERA {Haswell). 

 Station 57. 



Mcera haviigera, Haswell, Proc. Linn. Soc. N. S.Wales, iv., 1879^ 



p. 333, pi. xxi., fig. 1, f, g, gi. 

 Mcera hamigera, Haswell, Proc. Linn. Soc. N. S.Wales, xx., 1885, 



p. 104. 



Mcera hamigera (part?), Stebbing, Das Tierreich, xxi., 1906^ 



p. 437. 

 J/fera ^ami^ej'a. Walker, Trans. Linn. Soc., xii., 1909, p. 335^ 



pi. xliii., fig. 5, gn. 2, pi. 3, 



The " Thetis " specimen of this species throws doubt upon th& 

 identification with Megamoera suensis, var., Haswell, proposed in 

 " Das Tieireich." The variety in question is a large species^ 

 measuring with antennse and third uropods about 32 mm. 

 After deduction of those appendages, this would leave for the 

 body, fi'om front of head to end of telson, not more than 14 mm., 

 and the length of M. hamigera was given originally at half-an- 

 inch, or 12-5 mm., but it is not stated whether this measurement 

 includes the antennae and uropods. Without those extensions 

 our specimen, apparently a well developed male, measures a little 

 less than 5 mm. 



In the second gnathopods Haswell found the left member a^ 

 little larger than the first pair and of similar form, but the right 

 member very large and of characteristic shape, and figures it 

 with a blunt finger. The "Thetis" specimen has the finger of 

 the larger gnathopod blunt, but it is the left member instead of 

 the right, as described by Walker for his specimens from Suez 

 and Khor Dongola, that from the former station having a length 

 of 7 mm., with finger of its larger gnathopod, like that of the 

 smaller one, acute. 



The side-plates of the first peraeon segment deserve notice, 

 having the somewhat convex lower margin produced forward in 

 a little acute point, and the hinder extremity ending in a little 

 forward pointing tooth. 



In the "Thetis" specimen the first antennae have the second 

 oint longer and narrower than the first, but the third scarcely a- 



