REPORT ON THE AMPHIPODA. 859 



rami, but not exteudiug to the apical region ; peduncles of the third pair a little shorter 

 than the lanceolate rami ; with short slender spines on the outer margin, longer and 

 stronger ones on the two inner edges ; the inner ramus with eight spines of various 

 lengths on its inner margin, and a row of eleven small ones on the outer, the outer ramus 

 with five along the proximal half of the outer margin. 



Telson short, rounded at the top, the greatest breadth near the base, the distal border 

 broad, scarcely emarginate, slightly serrate at the outer corners, above which are placed 

 on either side two pairs of cilia. 



Length. — The length of the pcrseon and first three segments of the pleon united was 

 exactly half an inch. 



ioca/%.— Station 162, off" East Moncceur Island, April 2, 1874 ; lat. 39° 10' 30" S., 

 long. 146° 37' 0" E.; depth, 38 fathoms; bottom, sand and shells. Dredged. One 

 specimen, female. 



Remarhs. — The specific name refers to the striking ornamentation of the perseon. 



It long appeared to me that this species ought to be placed in the same genus with 

 Acnntliosteplieia malmgrcni, Goes, and Acantliostej^heia pulchra, Miers, although the 

 broken antennis and perjBopods left one or two of the characters in obscurity. But the 

 two northern species just mentioned are both sharply distinguished from the present 

 species by having small lateral eyes remote from the rostral apex, while the generic 

 relationship between this and the other two species assigned to the new genus 

 Q^dicei'oides seems to be consistently maintained in all parts ; the inner plate of the 'first 

 maxillae has much the same shape in all three, although the number of setse varies, being 

 five in the present species, compared with three and eight respectively in the other two. 

 In Acanthostepheia malmgreni, it may also be mentioned, the last three pairs of side- 

 plates in the perseon are acuminate, but Miers does not seem to mention these in 

 describing his species, so that it remains uncertain whether this should be regarded as a 

 generic characteristic. 



Incert.e sedis. 



Genus Amathillojisis, Heller, 1875. 



1875. Amatliillopsi-<, Heller, Osterr. Ungar. NorJpol-Exp., p. 11. 



1876. „ Sars, Prodromus descr. Crust. Exp. Norv., p. 359. 

 1881. „ Miers, Ann. and Mag. Nat. Hist., ser. 5, vol. vii. 



1883. „ Stebbing, Ann. and Mag. Nat. Hist., ser. .'), vol. xi. p. 205. 



1885. „ Sars, Den norske Nordhavs-Exp., p. 181. 



1886. ,, Gerstaecker, Eronn's Klassen und Orduungen, Bd. v. Abtli. ii. p. 512. 



For the account of this genus given by its author, see Note on Heller, 1875 (p. 442). 

 Heller places it between Amathilla and Gammaracanthus, that is to say, in the group of 



