172 roPEroru. 



arranged round the lower half of the oufer margin and apex, 

 as shown in the drawing (PL XVII. fig. 8). 



The furcal joints are very short. 



Habitat. Near Beggars Island, Plymouth, 1889; apparently 

 not very common. Ko males have been observed. 



Remarks. This species is readily distinguished by the 

 robust form and also the structure of the first pair of thoracic 

 feet, the stout eight-jointed antennules, and the form and 

 armature of the filth feet. 



DACTYLOPODELLA FLAVA (Glaus). 



1866. Dactylopm flarus, Claus, Die Copepoden-fauna von Isizza, 



p. 28, pl.'iii. %s. 13-16. 



1880. Dactyl ipusfiams, Brady, vol. ii. p. 116, pi. Ivi. figs. 1-11. 

 1905. Dactylopodellajlava, G. 0. Sars, p. 132, pi. Ixxxi. 



Mouth of the Eiver Yealm, collected in August 1889. 



VALLENTINIA *, nov. gen. 



Generic Characters. Female : Somewhat similar to Dacty- 

 lopodella, Gr. 0. Sars. Antennules short and composed of 

 six articulations. Antennae \\ith outer ramns two-jointed. 

 Oral parts as in Dactylopusia. First pair of thoracic feet 

 tolerably short; outer ramus three-jointed, shorter than the 

 inner; inner ramus robust and composed of two joints, first 

 joint stout and rather longer than the entire outer ramus, 

 second joint very short and armed with a strong terminal 

 claw and one or two setae. The next three pairs have both 

 rami distinctly three-jointed, the outer ramus being longer 

 than the inner and somewhat densely spinulose on the outer 

 margin, \\hile the inner ramus of the second pair has the 

 joints distinct as in the third and fourth pairs, the middle 

 joint having only one seta inside. Fifth pair with basal 

 joint broadly lamellif orm, secondary joint smaller and scarcely 

 produced beyond the end of the basal joint. 



Male : Similar to the female except in the hinged and 

 otherwise modified antennules ; in the inner ramus of the 

 second pair of thoracic feet being two-jointed, and the second 

 joint tolerably elongated and armed with a stout and nearly 

 straight terminal claw, while several setoe spring from the 

 inner edge ; and in the fifth pair, which are small, having 



* Named after Mr. Rupert Vllentin of St. Ives, Cornwall, who is 

 working at the Crustacea and has been of much assistance to us in most 

 kindly making gatherings of freshwater Entomostraca from various 

 places in that county. 



