SCHIZOl'ODA. 13 



smooth ; dorsal denticle* in two pairs, the first situated at aboat two-thirds of the 



u from the base of the telson to the insertion of the sub-apical spines, second 

 almvr ill-' spines. 



/ /**/* sub-equal in length, rather slender, extending to the level of the 

 insertion of the sub-apical spines of the telson. 



Preaiutl ttpine small and simple. 



A fuller description of this species is not possible, since the single specimen is 

 in bad condition and dissection was not desirable. 



The species belongs to that group of the genus with a posterior median dorsal 

 spine on the third segment of the pleon, and is distinguished from the other meml>ers 

 of the group by having .an equally developed spine on the fourth and fifth segments 

 of the pleon in addition. It presents no very near kinship with any dcMcribrd 

 species of the genus, and from the depth at which it was captured is prolmbly a deep- 

 water form. 



K I I' 1 1 A I > I A V A I . I . K N T I N I . 



(Plate IV., Figa. 4-6.) 



ni itpltitdtn* (part), 0. 0. Btn, 1881. 

 ralltntini, Su-bhing, 1MB. 

 valltntou. Holt and TaUenoll, 1906(1). 



Localities of captures : Lat. 56 54' S., long. 170 28' E, two specimens, male 

 and female, 19 mm. 



I have carefully compared these two specimens with two of the types from the 

 Falkland Islands which the Rev. T. Stebbing kindly sent me, giving me at the 

 same time full permission to dissect them if necessary. The ' Discovery ' specimens 

 are in perfect agreement with the types, and I have nothing to add to Stebbing's 

 description except a note on the copulatory organs on the first pleopod of the male. 



In the course of working out this collection the authorities of the British 

 Museum kindly allowed me to examine and dissect two of the ' Challenger ' specimens 

 labelled Euphausia, splendent by Sars. They were from the second of the localities 

 given by Sara on p. 82 of his " Challenger ' Report," viz., " October 21, 1875, South 

 Pacific." It became at once apparent on examination that one of these specimens 

 did not agree with Sara' description, since the antennule was furnished with a large 

 evenly rounded lappet on the basal joint, very conspicuous in lateral view.* Further 

 examination showed that it probably, indeed almost certainly, belongs to the present 

 species. It is true that I could not see the spine on the third pleon segment, but 

 the specimen is in very poor condition, and if, as I suspect to be the case, the 

 spine has been broken off, the scar would be difficult to detect 



I give (Plate IV., Fig. 5) an outline sketch of the rostrum and the basal joint 



Examination of the 'Challenger' type* of E. ipltndtn* shown that thU cpecie* poiieMM a mall 

 antennnlar lobe, bat it in nothing like no well developed and conxpicooai a* in K. ratlmtini (*< Hunwn 

 (IMS 9) ), Holt and Tattenall (1906 (1). and below, p. 14.) 



vou IT. K 



