AiO BRITISH COPEPODA. 
Delavalia reflexca was dredged by Mr. D. Robertson 
and myself five miles off Hartlepool on a sandy bottom ; 
several specimens were taken. 
3. DeLavaLia Ropusta, Brady and Robertson. Pl. Ul, 
figs. 15—21. 
Delavalia robusta, B. & R. Brit. Assoc. Report, p. 196 (1875). 
Spio brunnea, Idem. Ibidem. 
Rostrum as in D. palustris; anterior antenna (fig. 
15) curved, profusely setose, first jot the longest, 
fifth shortest. Basal joint of the mandible-palp (fig. 
16) of moderate length, branches about equal and 
nearly as long as the base; palp and digits of the 
upper foot-jaw (fig. 17) small and simple. Inner 
branch of the posterior antenna 3-jointed. First pair of 
feet like those of D. reflexa, but that the terminal sete 
of the inner branch (fig. 19) are stronger and the 
principal one plumose; the second, third, and fourth 
feet have both branches equal (fig. 20), each joint 
being produced into a strong spine at the distal 
extremity of the outer margin. Fifth feet like those 
of D. refleca, but more profusely setose. Caudal 
segments as in the two preceding species. Length 35th 
of an inch (‘85 mm.). 5 
This species was dredged in depths of twenty-five to 
thirty-five fathoms in several places off the coasts of 
Durham and Yorkshire; off Staiths and Robin Hood’s 
Bay (Yorkshire); and off Hawthorn (Durham); in all 
these places it occurred very sparingly. 
