the Trondhjem Fiord. 479 



Under the last-mentioned name Delia Valle also includes 

 //. Lulhockinna, G. 0. Sars, while //. Luhbockianaoi Hrltish 

 autliors he retains as a distinct species; but //. Luhbockidna^ 

 G, O. Sars, is undoubtedly the same as that of Jiritisli authors, 

 while tiie species described as //. Luhbockiana by the Italian 

 author would seem to be something diflerent, inasmuch as he 

 could not in the large figure he gives have omitted to draw 

 the remarkable serrated spines of the propodus of the peraeo- 

 pods. These spines have been figured by Bate, Stebbing, and 

 kSars. 



64. Acidostoma obesum, Bate. 

 Riidberg, 20-40 fathoms. 



65. Ichnopus spi'nicoi'ni'sj Boeck. 

 Rodberg, 150 fathoms. 



Delia Valle makes -this, as well as /. affinis and /. calceolua 

 of Heller, synonyms of /. taurus, A. Costa. With regard 

 to /. calceolutf he is probably right, but specimens of 

 Heller's /. affim's, kindly given me by that autlior, agree with 

 /. taunts, and these forms are markedly distinct from /. spi'ni- 

 cornis in the much more slender antennules and antennae and 

 in the absence in these of calceola in the female, as well as 

 the character of the nail of the second gnathopod (see Heller, 

 fig. 22, and Delia Valle, fig. 12). Sars makes /. calceolus of 

 Heller the male of/, sjjinicorm's ; and Heller's figure of the 

 first gnathopod of /. calceolus does not agree with that limb 

 in 7. taurus, moreover the diflferences illustrated in Delia 

 Valle's figs. 12 and 13 look something more than varietal. 



Sars has not noticed the peculiar modification of the second 

 uropod in the male of /. sphiicornis, which corresponds to 

 that figured by Delia Valle (pi. xxvii. fig. 2) as found in 

 I. taurus, and which occurs also in some other species, for 

 example in the male of the genus Tn'pkosites (see Sars, 

 pi. xxix. fig. 1, up.^). 



66. Ambasia Danielsseni, Boeck. 

 Rodberg, 100-300 fathoms. 



67. Aristias neglectus, Hansen. 



1872. Aristiat tumidut, Boeck (nee Kroyer), Skand. og Arkt. Amphip. 



p. 148, pi. iii. fi-,'. 4. 

 1887. Aristias neglecttif, IIan.sen, Oversig^ GrunlancU Amphip. Malakos. 



Hafskrebsdyr, p. Hi, pi. ii. ti<;s. 3-3 i. 

 1890. Aristias Aiuloiiinianua, (J. O. iSars, Crust. Norway, Arapbipoda, 



p. 48, pi. xvii. fifr. li (iifc Lysianassa Audouiniana, l?ate). 

 18U3. Ariitias neglcctus, Delia \'alle, /. c. p. &44, pi. vi. tig. 9, pi. xxvi. 



6g.s. lG-31. 



