C E U S T A C E A. 



VII.-SCHIZOPODA. 



By AV. M. TATTERSALL, M.Sc. 

 (8 Plates.) 



TIIK colleeiion of ' Discovery ' Schixopoda is a large one from the point of vir\v of the 

 ninnber of specimens it contains, considerably over ten thousand, including larva-, 

 having been collected. By 1'ar the majority of the-e -peciinens. nearly ten thousand. 

 however, belong to one species, and the total number of species reaches thirteen. The 

 collection is in a generally excellent state of preservation, though many specimens have 

 undoubtedlv suffered from being frozen after coming out of the water and from the 

 subsequent thawing before preservation. 



In the preliminary notice of this collection (Holt and Tattcrsall, 1906(1)*) ten 

 species were noted, of which five were absolutely new, two were only known under 

 manuscript names given to them by Dr. Hansen from the collections of the ' Brlgira 

 Antarctic Expedition, while the remaining three were already described forms. 



Since the publication of that notice further material has come to hand, collected 

 on the homeward journey of the 'Discovery.' It contained two species of En/ >li<tii*in 

 not included in the earlier material, one, an immature form which was too young to 

 be specifically identified ; the second, a species very close to E. lucens, Hansen 

 (= E. x/ili'iii/ni.*, <i. ( >. Sars), but which Dr. Hansen has kindly informed me is distinct, 

 and will be described by him in a forthcoming paper. A re-examination of the two 

 specimens which in the preliminary note were referred to .l///x/.-- maxima, 

 Ihmseii (MS.), has shown that they represent in reality two very closely allied 

 species, the second of which will also be described by Dr. llansen in a future work. 



Previous to the recent activity in South Polar exploration only three expeditious 

 to the Antarctic had brought back zoological material from which Schizopoda were 

 recorded. Dana (185:2) in his great work <>n Crustacea records two species from 

 Antarctic waters (/>., south of lat. '',() S. ) vix., Eitj>/t<ni*i'i >v //-.///./ and /-jn'o/'ln tuitr<ili*. 



H.M.S. 'Challenger' in 1874 collected, in the same region, Euphattsia superba, 

 /'. innrmyi, E. iinf<ir<Tir,i, 7V///.w///(-/'.v.v,/ tnncrura and a species of r.^wlonumi. 

 doubtfully referred to /'. sarsi by 1'n.f. Sars, who described the Sehixopoda of that 

 expedition. The second and third species in this list are, however, only synonymous 

 with the first, so that the real total of 'Challenger' Antarctic -peejes is three. 



* Those Jutes refer to tin- list nf Memoir-; on p. -'> s . 



