338 KULLETIN o4, UNITED STATES NATIONAL MUSEUM. 



Den Norske Nordhavs P^xpedition, Zool., Crnst., I, 1885, p. 97, pi. ix, figs. 

 1-21. — Beddari), Report on the Scientific Results of the Exploring Voyage 

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

 Medd. naturh. Foren. i KJ0bh., 1887-88, pp. 188-189.— Axel Ohlin, Aka- 

 demisk Afhandling, XXII, 1895, pp. 15-18. — Benedict, Proc. Biol. See. 

 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. 444-445. 



Localities. — Latitude 05'^ 35' north, longitude 54'^ 50' west; latitude 

 QQ"^ 33' north, longitude 55° 34' west; latitude 43° 55' north, longitude 

 49° 8' west; (Tranvillo Bay; Cape Alexander; Elsmere Land and (xreen- 

 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; Ingletield Gulf; Mur- 

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

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

 Bay, or hititude 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 Bay; Olriks Bay; Robertson Bay: Faroe Chan- 

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

 longitude 74° 20' west. 



Depth.— h-im 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 antennse extend to the end of the 

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

 ond pair of antenna' have the basal article short and not reaching 

 })eyond the antero-lateral angles of the head on the dorsal side; the 

 second article extends to the end of the first })air of anteiunv; 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 flagelhun is composed of ten articles, the last 

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

 the body, being 50 nun. 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 



