276 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 
Mediterranean. It has a wide range throughout the 
Atlantic and Pacific Oceans. 
EHucalanus attenuatus, Dana. 
1849. Calanus attenuatus, Dana, Crust. U.S. Expl. Exped., 1852, 
p. 1080, Pl. UX XY Satis. 2. 
This easily recognised species occurs frequently in both 
collections throughout the Indian Ocean. It has a wide 
range, extending from the Faeroe Islands to the Phillipine 
Islands. 
Rhincalanus cornutus, Dana. 
1852. Rhincalanus cornutus, Dana, Crust. U.S. Expl. Exped., p. 1083, 
Pl. LXXVIL., fig. 2. 
This species is easily recognisable by its protruding 
triangular rostrum. It occurs in both collections—on 
three occasions between the mainland of Africa and 
Madagascar, and again off Ceylon, Wyse collection, and 
at stations 14, 15, 16, Herdman, off the African coast. It 
has a wide range in both the Atlantic and Pacific Oceans. 
Rhincalanus gigas, Brady. 
Rhincalanus gigas, Brady, Rep. Voy. ‘‘ Challenger,” 1883, p. 42, PI. 
VIIL., figs. 1—11. 
This rare species was found only once, in No. 1, Wyse 
collection. Its range of distribution is very similar to 
that of A. cornutus. 
Acrocalanus gibber, Giesbrecht. 
Acrocalanus gibber, Giesbrecht, Atti Acc. Lincei Rend., Ser. 4, vol. 
IV., p. 332. 
This species is widely distributed throughout both col- 
lections, its range extending from South Africa, through- 
out the Indian Ocean and Bay of Bengal, and up through 
the Red Sea into the Mediterranean, the latter being an 
addition to its hitherto recorded range of distribution. 
