Tip- in-i juint of tin- l<-tt l->"i li.i- .1 -Ill-it spine on the extcrnnl margin, an<l tin- 

 last joint is broad proximal ly and folinecous, and on its inner surface is a row of fine 

 bristles, with three or f-ur stiff ami lunger than the rest 



EUCALANUS (DANA). 



That any species of Euatlanua should be found at extreme southern latitudes is 

 certainly curious. E. elongntux certainly occurs south of lat 40, and aUmt 40 W. 

 lung., ' Gauss' collection ; and in the ' Discovery* collection I have found al>out half a 

 dozen examples of a Knfalitnu* which I regard as a variety of E. xiibttnuiti or mucro- 

 natti*. This occurred at station marked 21. x. 01, lat 57 25|' 8., long. 151 }' E., 

 and station lat 56 31' 8., long. 156 19' 30", 22. xi. 01 ; in both cases a long 

 h'tance outside the Antarctic Circle, 



The ? (no males were found) is 4 mm. long. The head is very triangular, 

 elongated, and produced in front into a blunt point slightly bent downwards; there are 

 lateral swellings as in attenuatus, the part behind is not, however, indented. The la.-t 

 thoracic segment is rounded. The abdomen has three segments, and one tail bristle on 

 the left side is a little thicker and longer than the rest The genital segment is 

 laterally swollen and broader than long. Posterior antenna- with first and second 

 joints of the exopodite coalesced, the first joint of the endopodite alx>ut three times as 

 long as broad, and about the same length as Ri 2. The mandibles with very short /.'/. 

 the proximal part about three times as long as the distal, the whole Hi very much 

 shorter than the distal part of the basal, and with four bristles and two short marginal 

 bristles. Maxilla, B 2 with five, Hi 1 with four, Ri 2 with four, Hi 3 with five bristles. 

 With some resemblance to E. subtenuis, piUattu, and mucronatus, it is larger than any 

 of them. The five bristles on the B 2 of the maxilla cause it to differ from either 

 mucnmaltu or *uttenui* t and it has considerable differences from piUatun in SIM, 

 posterior antenna and mandible. The shape of the head is certainly not that of 

 subtenuis, nor is it so triangular and pointed as mucronatus. 



CTENOCALANUS (GIEHBRECHT). 

 ORNOCALANUS VAXUS. 







Ctaucaianiu ranu*. Oiabrecht, Atti Ace. Lincei Rend., 8er. 4, 1888, p. 886. 

 Fauna a. Fl. Neap. XIX. (1892), p. 194. 



This is extremely abundant in the ' Discovery ' collections, but does not differ in 

 any material particular from the species well known in the Atlantic. Its range of 

 distribution is very great, extending from the Faroe Channel (Wolfenden) throughout 

 the Atlantic to the southernmost parts of the Antarctic area, i.f. to the ice region. 



N 2 



