77 
from the following Danish localities. Lodshusene (mouth of Mari¬ 
ager Fjord), Traustedt leg. 30—7—1878. — N. of Læsø, 7 fms, 
19_10—1903 (“Thor“ St. 102, Dr. A. C. Johansen). — The light- 
ship Schultz’s Grund in NWVaW, 2 V 2 miles, 15 fms, shells(“Hauch“ 
St. 392). — The light-ship Trindelen in EV 4 N, 4 —6 miles, IOV 2 
fms, sand (“Hauch" St. 106). — The light-house of Hjelmen in W 
V 4 N, 6 miles, 13 fms, clay and sand. 
In addition to this, our museum possesses a rather great mater- 
ial of the species from Denmark (without special localities); this 
material was determined as C. crassicorne by Meinert in Naturhist. 
Tidsskr. ser. 3, vol. 11, 1877, p. 159, and ibid. ser. 3, vol. 12, 
1880, p. 491, and in “Hauch”s Togter 1893, p. 181, but it com- 
prises only abt. 30—40 spec. of the true C. crassicorne, all the 
others are C. Bonelli. 
On the literature. H. Milne-Edwards’s original description 
(Ann. Sci. Nat., vol. 20, 1830, p. 385) runs in extenso “troisiéme 
article des antennes inférieures dépourvu de dents å son bord in- 
férieur“ ; by this character it differs from C. longicorne (= C. gros- 
sipes L.), and M.-Edw. does not know more than these two spec¬ 
ies. — In 1840 (Hist. Nat. Crust., vol. 3, p. 67) he adds “plus 
petite que la précédente“ (C. longicorne), and “deux grandes épines 
au bord inférieur de l’article basilaire des antennes supérieures“. 
Locality is not given. 
Spence Båte 1862 (Catal. Amphip. Crust. Brit. Mus., p. 282) 
has only translated M.-Edwards’s description of 1840. Sp. Båte and 
Westwood 1863 (Brit. Sessile-Eyed Crust. vol. 1, p. 497, figs.) take 
it as synonymous with C. spinicorne; probably they have only had 
the last-named species at hånd. Czerniawsky 1868 (Zoogr. Pontica, 
p. 96) I have not seen; Jan Ritzema Bos 1874 (Bijdrage tot de 
kennis der Crustacea Hedriopht. van Nederland en zijne kusten. 
Groningen) has no description, and Della Valle 1893 (p. 368) has 
not himself seen the species. 
The first good characteristic of the species is given by G. O. 
Sars 1882 (Vid. Selsk. Forh. Christiania, No. 18, p. 112); later on 
(1895, p. 616, PI. 221, fig. 1) he has given a more elaborate de¬ 
scription provided with figures. As the species is scarcely to be 
recognized from the descriptions given by any of the earlier authors, 
I propose to call it C. Bonelli (M.-Edw.?) G. O. Sars. 
