144 



DISCOVERY REPORTS 



ending in a narrowly rounded lobe near hinge, a group of four spines surrounding a 

 shallow excavation into which the tip of finger fits, finger serrate for nearly its entire 

 margin. 



Peraeopods 3-5, 2nd joints all broader than in fissicornis, the postero-inferior angle 

 quadrate; dactyls short as in fissicornis. 



Remarks. Although closely allied to fissicornis, the differences are well marked. The 

 3rd pleon segment not merely lacks the tooth found in fissicornis, but is dorsally incised 

 for the reception of the keel on segment 4. This is an important specific character, and 

 not to be regarded as in the same category as the number of dorsal denticles, which may 

 be only varietal. 



It is possible that the mutilated specimen from the South Orkneys, ascribed by 

 Chilton (1912, p. 485) to dubia, belongs to the above described species. 



Liljeborgia epistomata, n.sp. (Fig. 83). 



Occurrence: Hoetjes Bay, Saldanha Bay, South Africa. 5. x. 26. 4 $$ 11-15 mm. from stomach of 

 Trigla capensis. 



Description. Eyes apparently absent. Rostrum short, extending about one-third 

 length of 1 st joint of antenna 1 . Antero-lateral 

 angle of head rounded. Side-plate 1 distally 

 expanded, lower margin of 1 and 2 setose, no 

 denticle on postero-inferior corner of side- 

 plates 1-3. Pleon segments 2, 4 and 5 each 

 with a medio-dorsal tooth, those on segments 

 4 and 5 being the termination of medio-dorsal 

 keels, that on 4 larger than that on 5, arising 

 from base of segment and fitting into a narrow 

 dorsal excision in the margin of segment 3 , as 

 in longicornis {supra) . Postero-inferior angle of 

 pleon segment 3 acutely produced, with a sinus 



above the point. Telson cleft to base, lobes oblong, apically truncate, with a prominent 

 tooth on inner apex, the distal margin with three to four little denticles with long spine- 

 setae arising between them. 



Antenna 1 extending to middle of last peduncular joint of antenna 2, flagellum 

 16-20-jointed, accessory flagellum 7-8-jointed. Antenna 2, flagellum 18-22-jointed. 



Epistome projecting as a prominent compressed acute tooth. Upper lip scarcely 

 emarginate on distal margin. Mouth-parts normal. 



Gnathopod 1, 6th joint ovate, finger with four teeth proximally on inner margin. 

 Gnathopod 2 similar but larger, finger with eight teeth. 



Peraeopods 1 and 2 slender, finger two-thirds length of 6th joint. Peraeopods 3-5, 

 2nd joints with hind margin almost straight, lower hind angle rounded-quadrate, 

 margin serrate, finger one-third length of the setose 6th joint. 



Uropod 3 with rami lanceolate. 



Fig. 83. Liljeborgia epistomata, n.sp. a, b. Profile 

 and frontal view of epistome and upper lip. 

 c. Telson. 



