CHAP. I.] BERMUDAS TO MADEIRA. 21 



liaul. Dr. von Willeraoes-Siiliui regards it as congeneric with 

 the species taken at Station LXIX. at a depth of 2200 fathoms ; 

 and as these crustaceans are among onr most interesting acqui- 

 sitions during the voyage between Bermudas and the Azores, I 

 will abstract a brief description of them from his notes. 



The two crustaceans for whose reception Dr. von Willemoes- 

 Suhm proposes to establish the genus Gjiathojjhausia, ])re&ent 

 characters which have hitherto been found partly in schizopods 

 and partly in phyllopods, but not combined in the same animal. 

 They are, however, essentially schizopods, and have much in 

 common with Lophogastei\ a genus described in great detail by 

 the late Professor Sars. It is proposed to refer Gnatliophausia 

 to the family Lophogastrid.e, which must be somewhat modi- 

 fied and expanded for its reception. 



In Gnathopliaumt the dorsal shield covers the thoracic seg- 

 ments of the body, but it is unconnected with the last five of 

 these. The shield is prolonged anteriorly into a spiny rostrum. 

 The stalked eyes are fairly developed in the ordinary position. 

 There is an auxiliary eye on each of the maxilljs of the second 

 pair. 



The two species of the genus are thus distinguished : G. 

 gigas, n. sp. (Fig. G). Scale of the outer antenna with five 

 teeth ; dorsal shield with the outer angles of its posterior bor- 



FiG. 7. — Gnathophausia Zo'ia, Von Willemoes-Suhm. Natural size. (No. 73.) 



der produced into spines ; no posterior spine in the middle 

 line ; length 142 mm. Of this species one specimen was pro- 

 cured from a depth of 2200 fathoms with a bottom of globige- 

 rina ooze at Station LXIX., 400 miles to the west of the Acores. 

 Gnathophausia Zoea (Fig. 7) has the scale of the outer an- 



