236 Southern Cross. 



2. SCHIZOPODA. 



Professor Sars, in his ' Challenger ' Eeport (27) on this group, gives 

 a synopsis of all the species of Euphciusia known at the date of 

 publication of that report. Mr. Stebbing (31), in describing a new- 

 species from the Falkland Islands, adds the more recently discovered 

 species to the synopsis of Professor Sars. The latter author gives a 

 brief critical summary of the characters usually made use of in 

 determining the species. In spite of deficient information on many 

 points, I have decided to describe the two following species as new ; 

 concerning one, E. glacialis, there can be no doubt, but with regard to 

 the other, E, australis, there may be some question as to whether or 

 no it is not identical, the differences noted being due to age. The 

 locality is the same, the date of capture does not vary by a fortnight 

 (12 days). Size is the most conspicuous difference, and at present it 

 is very much open to question whether the proportions of the joints 

 of the appendages are trustworthy characters. 



EUPHAUSIA GLACIALIS. 

 (PI. XXX.) 



Body about twenty-five millimetres long, from rostrum to telson. 

 The anterior part of the carapace is keeled and produced into a 

 short and broad rostrum, of which the base occupies the entire width 

 of the carapace. 



The ventral margin of the carapace bears a small spine anteriorly 

 and a larger one laterally about the middle of its length. The 

 hinder margin is produced backwards to form a pair of lateral 

 rounded wings. The pleon segments are very nearly equal. 



Telson comparatively long and slender, lateral appendages large 

 with a slight outwardly directed curve. Uropods approximately two- 

 thirds the length of the telson. Eyes large, pyriform, the cornea 

 very large, and a luminous organ in close connection with it 

 externally. 



First antenna. The first joint of the peduncle is at least twice 

 the length of the second, and at its distal extremity it bears a 

 membranous lappet on one side and a spine on the other. The 

 second joint also bears a small lappet, and the tliird carries two sub- 

 equal multiarticulate flagella ; the outer flagellum has a swollen base 

 and this bears a few sensory setae. 



