78 



Lepidepecreum 



Telson 



Uropocl 3 



47. Geil. Lepidepecreum Bäte & Westw. 



1868 Lepidepec7'eum, Bäte & Westwood, Brit. sess. Crust., v. 2 p. 509 | 1888 L., 

 T. Stebbing in: B,ep. Voy. Challenger, v.29 p. 686 | 1891 L., G. O. Sars, Crust. Norway, 

 v.l p. 112 I 1871 Orchoniene (part.), A. Boeck in: Forh. Selsk. Christian., 1870 p. 114. 



Body carinate, as arule extensively, iiitegumeiit firm, ealcareous. Antenna 1, 

 1^* Joint usually carinate, produced (Fig. 12). Antenna 2 in 9 not longer than 

 antenna 1, antepenultiniate Joint of peduncle rather 

 long, in ö flagellum slender, very elongate. Epistome 

 forming a broad corapressed plate projecting in front 



Peduncle, ^^ ^PP^^" ^^P" Mandible, molar 

 Joint 1.' slight, palp slender, affixed far 



back. Maxilla 1, inner plate with 



2 setae, outer with almost trans- 



verse apex. Maxilla 2, plates 



rather elongate, inner naiTower 



and a little shorter than oiiter. 



Maxillipeds, outer plates reaching 



beyond 2*^ Joint of palp. Gnatho- 



pod 1 subchelate, '6^^^ Joint narrow. 



Gnathopod 2 rainutely chelate. 



Peraeopods 1 and 2 slender. 

 Peraeopods 3 — 5, 2*^ Joint large. Uropod 3, rami in 9 scarcely reaching beyond 

 uropod 2, with few setae or none, in ö much larger, densely setose on 

 inner margiu (Fig. 13). Telson conically attenuated, cleft (Fig. 13). 



5 species. 



Synopsis of species: 



( Carina of small extent 1. L. typhlops . . . . p. 78 



\ Carina of great extent — 2. 



f Telson not cleft beyond the centre 2. L. foraroiniferuin . p. 79 



\ Telson cleft beyond the centre — 3. 



iPeraeopod 5, 2d Joint greatly produced down- 

 ward 3. L. clypeatum . . . p. 79 

 Peraeopod 5, 2d Joint not greatly produced down- 

 ward — 4. 



f Side-plate 5 not deeper than broad 4. L. longicorne . . . p. 80 



\ Side-plate 5 deeper than broad 5. L. umbo p. 80 



Fig. 12. 



L. longicorne, (J. 



Antenna 1. 



[After G. 0. Sars.] 



Fig. 13. 

 L. longicorne, (J. 

 Uropod 3 and telson. 

 [After G. 0. Sars.] 



1. L. typhlops Eonnier 1896 L. t, J. Bonnier in: Ann. Univ. Lyon, t;. 26 

 p. 621 t. 36 f. 2. 



Back somewhat rounded, not carinate, apparently with single exception 

 of pleon Segment 4, which is raised into a sharp, apically upward pointing 

 keel, and in d, but not in $ , has a deep transverse sinus. Head very narrow, 

 rostrum small, lateral corners greatly produced into a narrow, somewhat 

 downward directed, apically rounded lobe. Side-plates 1 — 4 very large; pleon 

 Segment 3, postero-lateral corners quadrate. Eyes entirely wanting. Antenna 1, 

 1^* Joint large, scarcely produced apically, rest disposed at right angles to P*, 

 flagellum in ö with 6 joints, with some calceoli, 1*** Joint longer than other 

 5 combined, in 9 with 5 joints, 1^* not very long; accessory flagellum very small, 

 2-jointed. Antenna 2 in d as long as body, ultimate and penultimate joints of 



