88 ME. T. SCOTT ON ENTOMOSTEACA 



of the ' Challenger ' Copepoda). The annexed foi'mu]a shows the proportional lengths of 



the joints of the left anterior antenna, which is 18-jointed : — 



5.7.6.7.4.4.4.4.3.6.7.8.9.G.(3.7.7.7 

 1 2 3 4 5 6 7 S i) lU 11 12 13 14 15 1(5 17 1«- 



The fifth pair of feet are nearly like those of Fontella iilumosa ; the most obvious 

 difference between them is in the size and proportional length of the joints. Abdomen 

 stout, short, and composed of five segments ; the first is rather longer than the combined 

 length of the next two ; the second, third, foiirth, and fifth segments are nearly equal 

 in length. Caudal stylets about equal in length to the three preceding abdominal 

 segments. 



Fontellopsis villosa was obtained in 21 tow-nettings from various parts of the area 

 traversed by the ' Buccaneer,' between lat. 5° 58' N., long. r4' 10" W., and lat. 6° 9' 8" S., 

 long. 11° 10' 4" E., all of which, except one from 10 fathoms, were surface-gatherings. 

 The number of day and night collections are as follows : — 



f 9 day collections. 

 1 



r 20 surface 1 11 night ditto. 



Tow-nettings 21 < f 1 1 11 f 



L 1 under-surface (10 fathoms) < ^ 



^ l „ ditto. 



The genus and species were described by Dr. Brady from female specimens, of which 

 only three were obtained. In the ' Buccaneer ' collections a considerable number 

 of specimens were observed, but comparatively few of them were females, and none of 

 them reached the dimensions of those described in the 'Challenger' Copepoda; the 

 females also wanted the peculiar lateral abdominal apijendage possessed by the 

 'Challenger' specimens; otherwise, however, the 'Buccaneer' specimens (females) 

 agree in every respect with those described and figured in the ' Challenger ' Report. 

 The last three thoracic segments of all the 'Buccaneer' specimens possess a brownish 

 coloured mark of an irregular outline on each side of the median dorsal line, as shown 

 in figure 29. The abdomen in the females is also commonly distorted, and the first 

 segment is furnished with two small protuberances ; the form and size of the caudal 

 stylets are also more or less unequal. 



Dr. Giesbrecht * considers Mouojjs, Lubbock, to be synonymous with Fontellopsis, 

 Brady, and as Monops is prior to the other he substitutes it for Fontellopsis. 



Genus Pontellina, Dana, 1852. 



Pontella, Brady (in part.)^ Eeport on the ' Challeugcr' Copepoda, 1883. 



Pontellina, Giesbrecht, Fauna und Flora des Golfes von Neapel (Pelagische Copepoden), 1892. 



Pontellina plumata, Dana. 



1852. Pontellina plumata, Dana, Crust. U.S. Expl. Esped. p. 1135, pi. Ixxix. figs. \Oa-d. 



* ' Fauna und Flora des Golfes von Neapel (Pelagische Copepoden),' p. 486. 



