— 14 — 



f . Distal inner end of the upper lobe from first 

 antennular joint shaped as a small, short, trian- 

 gular, acute process, which is shorter than deep. 

 Large species 6. T. pectinata Ortm. 



f f . Distal inner end of the upper lobe from first 

 antennular joint produced into an oblong trian- 

 gular nearty spiniform, acute process, which is 

 a good deal longer than deep. Rather small 

 species 7. T. distinguenda n. sp. 



g. Second joint of the antennular peduncle dorsally pro- 

 duced into a narrow lobe terminating in a spine. A lon- 

 gitudinal ridge accompanied by a linear impression 

 somewhat above the latéral margin of the carapace. 

 Third abdominal segment with a slender dorsal spine 

 from the posterior margin. . . S. T. lateralis n. sp. 



b. Carapace with a deep gastro-hepatic groove across the 

 dorsal part. Maxillulœ have the palp very elongate and 

 strongly protruding ; the exterior plate from the lobe of 

 first joint is at least rather small, situated on the lower 

 (posterior) side of the appendage and not reaching to or 

 slightly overreaching the outer margin of its joints. The 

 eye-stalks with a tubercle at the upper inner end. 



a. Front upper margin of carapace horizontal, ter- 

 minating in a minute conical vertical process. 

 Peduncle of the antennulœ (in the female) only 

 moderately thick, much tapering towards the end; 

 no tuft of setae on the basai part of the outer lower 

 flagellum 9. 7". insignis n. sp. 



(3. Front upper margin of carapace, seen from the side, 

 curved downwards and rounded, without any pro- 

 cess. Peduncle of the antennulas (in the maie) very 

 thick, scarcely tapering towards the end; basai part 

 of the outer lower flagellum with an extremely thick 

 tuft of very long thin setae... 10. T. egregia n. sp. 



Of the 10 species enumerated the six last-named are repre- 

 sented in the collection. 



