53 



second and third. Second antennae with many-jointed 

 flagellum. Maxillipeds six-jointed, ultimate joint oval, very 

 much smaller than the penultimate. Uropods without a 

 second ramus. 



Paridotea unCtULAta (Pallas). 



1772. Oniscus ungulatus, Pallas, Spicil. Zool., Fasc. 9, p. 62, 



t. 4, f. 1 1 . 

 i<Si8. Idotea ungulata, Lamarck, Hist. Anim. sans Vertebres, 



V. 5, p. 160. 

 1836 r Tdotea Edivardsii, Guerin-Meneville, Icono,!^raphie, 



Crust., p. II (without figure). 

 1840. Jdotea Lalandii, Milne-Edwards, Hist Nat. Crust., v. 3, 



p. 132, t. 31, f. 7. 

 1840. Idotea a^nis, Milne-Edwards, Hist Nat. Crust., v. 3, 



p. 133- 

 1843. Idoiea Lalaiidu, Krauss, Siidatrik. Crust , p. 61. 

 1843. Idotea afjfinis, Krauss, Siidafrik. Crust., p. 61. 

 1 86 1. Idotea nitida, Heller, Verhandl Zool.-bot. Vereins 



Wien, p. 497. 

 1 868, Idotea nitida, Heller, Reise der Novara, p. 1 3 1 , t. 1 2, f. i . 

 1868. Idotea affiuis, Heller, Reise der Novara, p. 130. 

 1876. Idotea affinis, Miers, Catal. New Zealand Crust., p. 93. 

 1879. Idotea a finis, Thomson, Trans. New Zealand Inst., 



V. II, p. 2}^2. 



1 88 1. Idotea tmgulata, Miers, J. IJnn. Soc, London, v. 16, 

 P- 52. 



There is good reason to think that the above synonymy 

 supplied by Miers in his careful discussion of this species is 

 thoroughly trustworthy. Miers examined the types of Idotea 

 Lalandii ixQvci the Cape in the Paris collection, so that Milne- 

 Edwards evidently used a misleading expression in saying 

 that the side-plates were of the same form as in Idotea 

 tricuspidata, because in that species those of the second and 

 third peraeon segments are as long as the segments. In 

 describing the colour as blackish and figuring the animal as 

 of a deep purplish black, j\Iilne-Edwards may be supposed to 

 have had in view an abnormally coloured specimen, since 

 none of the other authors make mention of this funereal hue. 

 Krauss gives the colour of Idotea affinis as yellowish green 

 with blackish dots. Heller describes the same species as 

 greyish green with the side-plates somewhat lighter, and for 

 his Idotea nitida says that the colour of the body is grey, finely 

 dotted with black, flecked with brownish red, the pleon 

 somewhat darker ; the legs, especially towards their end, with 



