6o 



DISCOVERY REPORTS 



Genus Lepidepecreum, B. and W. 



Stebbing, 1906, p. 78. 

 Stephensen, 1925, p. 117. 



Lepidepecreum cingulatum, n.sp. (Fig. 22). 



Occurrence: St. 165. South Orkneys. 4 $$ (2 ovig.) 7-7-5 mm., from stomach of Notothenia. 



Description. Integument not strongly indurated (as preserved). Head with ocular 

 angle almost rectangular, post-antennal angle obtusely quadrate. Eyes oval-reniform. 

 Peraeon and pleon dorsally rounded, not at all carinate, and without any processes. 

 Side-plates 1-4 deep, lower margins almost straight, and together forming an even line; 

 excavation on 4 nearly rectangular, long (dorso-ventrally) but shallow; 5th deep, 

 shallowly bilobed, posterior lobe slightly deeper and larger than anterior, 6th similar, 



Fig. 22. Lepidepecreum cingulatum, n.sp. a. Side-plate 4. b. Anterior margin of head with epistome and upper 

 lip. c. Gnathopod 1. d. Gnathopod 2. e. Peraeopod 5. /. Telson. g. Pleon segments 3 and 4. 



7th deeper than long, rounded below. Postero-inferior angle of pleon segment 1 

 rounded, of 2 quadrate, of 3 somewhat produced in an angle less than 90 , lower and 

 hind margins almost straight. Telson longer than broad, cleft almost to centre, lobes 

 apically subacute, each with one stout spine. 



Antenna 1, 1st joint carinate on dorsal edge, but not apically produced, flagellum 

 n-12-jointed, accessory flagellum 5-jointed. Antenna 2, flagellum 13-14-jointed. 



Epistome and mouth-parts as figured for umbo (Sars, pi. xxxix, fig. 2) including the 

 short stout spinules along inner margin of outer plate of maxilliped. 



Gnathopod 1 as in umbo, 2nd joint long, setose on front margin; but 5th and 6th 

 joints stouter, the defining angle of concave palm more produced. Gnathopod 2 also 

 as in umbo, but 6th joint more broadly oval, and chela minute. 



Peraeopods 1 and 2 slender. Peraeopods 3-5, 2nd joints ovately expanded, lower hind 

 angle rounded, hind margin obscurely crenulate, 4th joints moderately expanded, 5th 

 abruptly narrower. 



