730 THE VOYAGE OF H.M.S. CHALLENGER. 



Genus Andania, Boeck, 1870. 



Mandibles with tlie cutting edge for the most part smooth ; only one mandible with 

 a secondary plate, and that minute. 



First Maxillse wth a two-jointed palp, which does not always reach so far as the outer 

 plate. 



Second Maxilla} with the outer plate shorter and much narrower than the inner. 



Telson very small, whole or slightly incised. 



Boeck founded this genus for the two species Andania ahyssi and Andania 

 nordlandica ; to these Sars in 1882 added a third, Andania pectinata;^ for tlie three 

 new species now included, it has been necessary slightly to modify the wording of 

 Boeck's definition (see p. 399). Indeed, his expression, " JMaxillae Imi paris palpo 

 elongato, lato, 2-articulato," does not seem to agree with his description of the first 

 maxillse of Andania nordlandica, of which he says, " Palpen er liden, uden B0rster." 



Andania gigantea, Stebbing (PL XXXV.). 



1883. Andania gigantea, Stebbing, Aim. and Mag. Nat. Hist., ser. 5, vul. xi. p. 206. 



The head almost concealed beneath the large overhanging first segment of the perseon, 

 the forehead obtusely angled ; the perseon broad and deep, especially from the second to 

 the fifth segment ; the first segment longer than the rest, from before backwards increasing 

 rapidly in depth ; from the sixth segment of the perseon the width and depth of the 

 segments decrease rapidly towards the telson ; the segments of the pleon not exceeding 

 the average length of those of the peraeon, the third segment with the rounded hind 

 margin dorsally produced over the dorsal depression of the fourth segment, the sixth 

 segment dorsally emarginate to receive the telson ; the postero-lateral angles acute in the 

 second segment, but not in the first, and scarcely in the third, though in that segment 

 a little outdrawn. In spirit the integument shows prismatic colouring. The larger 

 specimen is brown and very thin-skinned, while the smaller has a less flexible integu- 

 ment, and, as is commonly the case with specimens in spirits, is a sort of creamy-white 

 in colour. 



Eyes not made out, probal)ly wanting. 



Upper Antenna}. — The first joint stout and short, broader than long ; the second 

 joint a little narrower and much shorter ; the third showing little more than a rounded 

 lobe on each side, the smaller lobe on the inner side having a group of setae ; the flagellum 

 three-sided, tapering, of about fourteen joints, of which the first is very large, much 

 longer than either the peduncle or the remainder of the flagellum ; it tapers strongly 

 with a slight curve, and in addition to a row of nine or ten large spine-like setae along 



1 In regard to tliis, see Note on Aurivillius, 1885 (p. 558). 



