KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND. 21. N:0 5. 23 



The fifth pair (Pl. III, fig. 27) are considerablj' longer than the sixth pair; thc 

 fe mur is broader than in the other species, only five times longer than broad; the 

 anterior margin shows 5 — 6 strong sharp teeth, the posterior is obtusely serrated; the 

 apical process is very strong, quite straight, tive times longer than the genu; the tibia 

 is a little shorter than the carpus (21 : 22); the metacarpns is longer than half the 

 carpus, tolerably stont. The dactylns is short, strongly cnrved, and robust, thicker at 

 the base, with small opening, and a very short spine at the niiddle of the hinder margin. 

 (Pl. III, fig. 28). 



The sixtli pair (Pl. III, fig. 29 and 30); the tibia, carpus and metacarpns are 

 broad, almost tnmid; the tibia a little shorter than the carpus, the carpus longer than 

 the metacarpns. The dactylus as in the preceding pair. 



The seventh pair (Pl. III, fig. 31 and 32) ai"e exactly of the same form as the sixth 

 but much smaller (5:8); they are shorter than half the fifth (.5:11). 



The pleon is a little longer than the last four pereional segments, the liinder corners 

 of the lateral parts of tlie segments are deeper than the anterior, and broadlj' rounded. 



The pleopoda; the peduncles are much longer than the rami; the exteriör ramus is 

 7-jointed, the interiör B-jointed. 



The urus (Pl. Ill, fig. 33) is almost shorter than the last pleonal segment; tlie last 

 two coalesced segments are shorter than the first. 



The uropoda; the inner rami of the first t^vo pairs are longer than the peduncles, 

 those of the second pair are excavated at the interiör margin and finely serrated, as is 

 also the inner margin of the peduncle. The outer margin of the interiör ramus of the first 

 pair is sharply seri-ated. The interiör ramus of the third pair is as long as the peduncle, 

 sharply serrated along tlic exteriör margin. The exteriör ramus of the first pair is short 

 and narroAv, equalling about an eighth of the length of the interiör ramus, that of the 

 second pair is long and narrow, almost as long as half the interiör ramus. The exteriör 

 i-amus of the third pair is pretty broad, finely serrated along the inner margin, equalling 

 two thirds of the length of the interiör one. 



The telson is very minute, much shoiier than a tenth of the length of the peduncles 

 of the last pair of uropoda. 



9. TTRO TULLBERGI, C. BOVALLirs, 1885. 



Pl. IIL fig. 1—9. 



Diiis;ii. Corpus carinatuin, lateribiis pereii marginatis. Caput rostratum, duplo fere ahiiis quani 

 longius, .^upeine carinatum, carinis divergentibiis. AideiuKi' primi pari.s quartam partem 

 longitiidinis corporis tequante.?. Femora pedum pereii qiiattuor pariiim primonim lata, 

 ovata. Pedes quinti paris pedibus sexti pari,? nmltf) longiores; femur ante leve, post 

 .spimdose serratimi, articulis tribiis sequentihns inidto l)i-evius,' .spinani cuvvatam .simplicem, 

 genu paullo longioreni geren.-;; til)ia carpo nudto longior; cai-jras iiietacarpo tertia parte 

 longior. Pede.s septiini paris tertiani partem Inngitiulini.s pedum quiuli paris a^qu:inte.«, 



