KONGL. SV. VKT. AKADEMIENS IIANDLTNOAK. l',A\I). 22. N:() 7. 295 



Syn. 1852. Theminto aiitarctica, .T. ]"). DANA. — United States Exploring Expe- 



dition. Crustaoea. Vol. 2, p. 

 1005, pl. 09, lip,-. 1. 

 » » » Sprnce Bate. li>6'2. Catiil. Anipli. Orust. Brit. M\i- 



soiiiu, p. 312, pl. 50, lig. 8. 

 » >) » G. M. Thomson. 187.9. »New Zealand Crustaoea». Träns. 



and Proc. of the New Zealand 

 Institute. Vol. 11, p. 243, 

 pl. 10 D. fig. 2—3. 

 Eutheiniato antarctica, » C. BovALi.ius. 1887. »Systematical list of the Aniplii- 



poda Hyperiidea". Bili. t. K. 

 Sv. Vet. Ak. Handl. Bd. 11. 

 N:o 16, p. 2-2. 

 >' » » » 1887 . »Arotic and Antarctio Hyperids". 



Vega-Exp. Vetensk. Iakttagel- 

 ser. Bd. 4, p. 570. 

 1862. Themisto Giierinii, SPENCE BATE. — Catal. Amph. Crust. Brit. Mu- 



seum, p. 313, pl. 50, fig. 9. 

 1888. EiUhcmisto Gcmdichcmdii, (F. E. GUÉRIN.) Tii. Stebbing. »Report ou the Amphipoda». 



Voy. of H. M. S. Challenger. 

 Zoology. Vol. 29, p. 1410, 

 pl. 172 and 173. 



Eutheraisto antarctica, Dana, and E. Gaudichaudii^ Guértn, are closely allied, 

 and are less easily distinguished from one another than the two Northern forms; the best 

 distiiignishing mark is however the relation between the length of the tirst and second 

 pairs of uropoda. 



The original description given by Dana in 1852 runs: 



»Superior antennas longer than the head, nearly naked, three-jointed, two basal joints small, 

 the third long and acuminate; inferior pair longer and very slender, base four-jointed, third and fourth 

 joints slender, fourth longer, flagellum a little longer than fourth joint. Third and fourth pairs 

 of feet preheusile, hand hroad, triangulato-subovate, finger slender, longer than hand, claw nearly 

 straight. Fifth pair rather stout, coxa large, next two joints short, fourth long, stout, fifth longer 

 than three preceding together. Sixtli and seventh subequal and slender. Caudal stylets very 

 long. — — — Thoracic segments seven, subequal. Fifth abdominal segment very short. Last 

 segment quite small, triangulär. Terminal caudal stylets longest, nearly as long as abdomen, 

 first pair longer than second, but not extending as far back as third pair. Antennary area rather 

 small, broader above, occupies niore than half the height of the head, and less than half its 

 width. Two anterior pairs of legs are cylindrical towards apex and pointed, fifth joint longer 

 than fourth, and fourth louger than third; at apex a few long setas. The hand in third and 

 fourth pairs has a few very short setas on the palm, and the finger one or two rainute sette on 

 the inner side. The long tarsus or finger of fifth pair appeared to have a minute claw at apex. 

 The sixtli and seventh pairs are rather long and nearly equal; there are several short sjDJnes on 

 inner margin of fourth joint, besides a few on the other joints. The third pair of abdominal 

 legs is smaller than the preceding. « 



The description of Theiimto antarctica given by Spence Bate in 1862 agrees to- 

 lerably well with that of Dana, and as the characteristics respecting the uropoda positively 

 agree I think that Spence Bate was right in his determination. I quote only the 

 last passages of his description: 



