REPORT ON THE SCHIZOPODA. 



<0 



The following synopsis of the species may be here appended :- 



Frontal part of 

 carapace 



rather large, pyriform. ( two denticles, 

 Inferior margin of -< 

 carapace armed with ( a single denticle, 



acutely produced. 



Eyes 



very small. Third 

 caudal segment 



smootli, not pro- 

 duced, . 



produced to an 

 acute pos- 



teriorly curving 

 lappet. 



very slightly pro- 

 duced. Inferior 

 margin of cara- 

 pace 



smooth, 



armed 

 with a 

 single 

 denticle 

 placed 



anteriorly to the middle, 



in the f smooth, 

 middle. 



Third -{ produced to a pos- 

 caudal | tcriorly point- 

 segment [ ing spine. 



produced to a strong rostral projection, and armed with distinct 

 supra-orlsital spines. Caudal segments partly spinous. 



projecting as a 

 broad plate 



( triangularly pointed, 

 ( truncate at the apex, 



E. pellucida, Dana. 

 E. similis, G. O. Bars. 



E. (jracilis, Dana. 



E. (jibba, G. 0. Sars. 

 E. siipnrba, Dana. 

 E. murrmji, G. O. Sars. 

 E. splendens, Dana. 



E. nmcronata, G. 0. Sars. 



E. spiniferu, G. 0. Sars. 

 E. antarctica, G. 0. Sars. 

 E. latifrons, G. 0. Sars. 



14. Euphausia pellucida, Dana (Pis. XL, XII.). 



Euj)liausia jyellueida, Dana, United States Expl. Exped., vol. xiii., Crustacea, p. G41, pi. xlii. 



fig. 4, a-m. 

 Euphausia miilleri, Claus, Zeitschr. f. wiss. Zool., Bd. xiii. p. 432, pi. xxviii. figs. 29-31, pi. x.xix. 

 Thysanopoda Udentata, G. 0. Sars, Oversigt af Norges Crustaceer, Ikl. i. p. .50, pi. i. 



figs. 11-U. 

 Euphausia pellucida, G. 0. Sars, Preliminary Notices on the Challenger Schizopoda, No. 13. 



Specific Charactei'S. — Carapace with two lateral denticles on either side, frontal part 

 produced, and. acutely pointed. Caudal segments smooth, epimera rather large and of 

 uniform appearance. Last segment longer than the preceding ; preanal spine tridcn- 

 tate. Eyes of moderate size, pyriform. Basal joint of antennulse with an erect leaflet 

 above, usually divided into two acuminate lappets. Antenna! scale oljlong-ovate, 

 obtusely truncate at apex, outer corner unarmed ; basal spine very large, and denticulate 

 at inner edge. Terminal joint of second pair of maxillaj short and broad, with a row of 

 small teeth anteriorly. Telson elongate ; subapical spines very large, and finely denti- 

 culate at inner edge. Inner plate of uropoda longer than outer. Usual length of adult 

 female 10 to 15 mm. 



Remarks. — This would seem to be by far the commonest of all the Challenger species 



