— 40 — 



j. Antennulae with the upper flagellum some- 

 what or considerably longer than the sum of 

 the two distal peduncular joints. Terminal 

 process of the copulatory organs a little 

 expanded on the inner side towards the ter- 

 minal margin which is convex with fine saw- 

 teeth along the front side ; proximal process 

 with the end somewhat expanded and curved 

 backwards, with the terminal margin trans- 

 verse and serrate (seen from the side this 

 terminal part is quite thin and somewhat cur- 

 ved). Rather small species. T. vicina n. sp. 



jj. Antennulae with the the upper flagellum 

 somewhat shorter than the sum of the two 

 distal peduncular joints. Terminal process ol 

 the copulatory organs distally expanded at 

 both sides and especially outwards, with the 

 terminal margin long, oblique, conspicuously 

 emarginate, without serration, while the ter- 

 minal inner part is a projecting, broadly 

 rounded lobe, the terminal outer part subtri- 

 angular with the free angle narrowly rounded; 

 proximal process with a very short terminal 

 part strongly curved, slender at the base of 

 the curvature and the end itself distinctly 

 broader with the margin transverse. Species 

 of considerable size. T. macrura G. O. S. 



Some remarks on the species may be added as supple- 

 ment to the characters to be derived from the key. 



T. longipes Brandt. — Rostrum rather narrow, acu- 

 minate, slightly more slender in the male than in the 

 female. Antennulae with the two distal peduncular joints 

 in the female long and slender, and the third joint scarcely 

 or slightly longer than the second ; in the male both joints 

 are thicker and considerably shorter, but without proces- 

 ses or setiferous lobes. Copulatory organs with all four 



