20 ’ Mr. I. C. Thompson on the Copepoda 
Scolecithrix Dane, Lubbock. 
gab rt gee Dane, Lubbock, Tr. Ent. Soc. Lond. n, ser. vol. iv. 
p. 15. 
The genus Scolecithrix has proved to be the best repre- 
sented in this collection, furnishing nine species, one of 
them (S. chelifer) being new to science. The species before 
us—S, Dane—one of the most widely diffused throughout 
the great oceans, occurs only once in the present collection 
at a depth of 1570 fathoms. 
Scolecithrix Bradyi, Giesbrecht. 
1888, Scolecithrix Bradyi, Giesbrecht, Aiti Acc. Lincei Rend. ser. 4, 
vol. iv. p. 337. 
About as widely distributed as the previous species, 
occurring here at two stations at depths of 1190 and 1410 
fathoms. 
Scolecithrix auropecten, Giesbrecht. 
1892. Scolecithrix auropecten, Giesbrecht, F. Fl. Neapel, yol. xix. 
p. 266. 
One specimen (a female), agreeing in all respects with 
Giesbrecht’s description, was found at 1510 fathoms. The 
male remains unknown. 
Scolecithrie major, T. Scott. 
1893. Scolecithrix major, T. Scott, Tr. Linn. Soc. ser. 2, Zool. vol. vi. 
p. 52. 
This appears to be a very rare species, the only previous 
record by Mr. Scott being one specimen from the Gulf of 
Guinea, with which my only specimen taken at 920 fathoms 
agrees. 
Scolecithrix persecans, Giesbrecht. 
1895. Meolecithrix persecans, Giesbrecht, Bull. Mus. Harvard, vol. xxy. 
p- Q5Q 
au. 
One specimen (a male fully matured) was taken at 
1410 fathoms. Its peculiar Jong prehensile fifth feet figured 
by Giesbrecht are very diagnostic. The female is unknown. 
Giesbrecht’s specimen was from the Pacific, mine from the 
Atlantic, so increasing its known range. 
Scolecithriz securifrons, T. Scott. 
1893. Scolecithriv securifrons, T. Scott, Tr. Linn. Soc. ser, 2, Zool. 
vol. vi. p. 47. 
Several specimens of this species, easily recognizable by 
