338 BULLETIN 54, UNITED STATES NATIONAL MUSEUM. 



Den Norske Nordhavs Expedition, Zool., Crust., I, 1885, p. 97, pi. ix, figs. 

 1-21. BEDDARD, Report on the Scientific Results of the Exploring Voyage 

 of H. M. S. Challenger, Zool., XVII, 1886, pi. xx, fig. 12. HAXSEX, Vid. 

 Medd. naturh. Foren. i Kj0bh., 1887-88, pp. 188-189. AXEL OHLIX, Aka- 

 demisk Afhandling, XXII, 1895, pp. 15-18. BENEDICT, Proc. Biol. Soc. 

 Washington, XII, 1898, p. 43. RICHARDSON, American Naturalist, XXXIV, 

 1900, p. 230; Proc. U. S. Nat. Mus., XXIII, 1901, p. 549. ORTMANN, Proc. 

 Phila. Acad. Nat. Sci., 1901, pp. 156-157. NORMAN, Ann. Mag. Nat. Hist. 

 (7), XIV, 1904, pp. Ill 115. 



Localities. Latitude 65 35' north, longitude 54 50' west; latitude 

 66 32' north, longitude 55 34' west; latitude 43 55' north, longitude 

 49 8' west; Granville Bay; Cape Alexander; Elsmere Land and Green- 

 land; Union Bay, Beechy Island; latitude 67 59' north, longitude 56 

 33' west; latitude 68 9' north, longitude 56 32' west; latitude 70 29' 

 north, longitude 55 40' west; latitude 71 10' north, longitude 58 56' 

 west; latitude 78 24' north, longitude 74 west; Inglefield Gulf; Mur- 

 chison Sound; Cape Faraday; latitude 60 21' north, longitude 5 C 41' 

 west; Baffin Bay; near Cape York; Grinnell Land; Franklin Pierce 

 Bay, or latitude 79 29' north; Cape Napoleon, or latitude 79 38' north; 

 Dobbin Bay, or latitude 79 40' north; Floeberg Beech, or latitude 

 82 27' north; Barden Baj^; Olriks Bay; Robertson Bay; Faroe Chan- 

 nel; latitude 72 38' north, longitude 77 10' west; latitude 72 8' north, 

 longitude 74 20' west. 



Depth. 5-150 fathoms. 



Body narrow, elongate, nearly seven times longer than wide, 6 mm. : 

 40 mm. 



Head as wide as long, 5 mm. : 5 mm., with the anterior margin deeply 

 excavate. The eyes are small, composite, about twice as wide as long, 

 and situated at the sides of the head, about halfway between the ante- 

 rior and the posterior margins. There are two large spines on the 

 posterior half of the head, one on either side of the median line. The 

 basal article of the first pair of antennae is long and somewhat dilated; 

 it is as long as the two following articles, which are subequal, taken 

 together; the fourth article is about one and a half times longer than 

 the first article. The first pair of antennae extend to the end of the 

 second article of the peduncle of the second pair of antennas. The sec- 

 ond pair of antennae have the basal article short and not reaching 

 be} r ond the antero-lateral angles of the head on the dorsal side; the 

 second article extends to the end of the first pair of antenme; the 

 third article is about three times as long as the second article; the fourth 

 is one and a half times longer than the third; the fifth is as long 

 as the fourth. The flagellum is composed of ten articles, the last 

 article terminating in a spine. The second antennae are longer than 

 the body, being 50 mm. in length. The maxillipeds have a palp of 

 five articles. The palp of the mandibles is absent. 



The first three segments of the thorax are equal in length; the fourth 

 is twice as long as either one of the preceding segments; the fifth is 



