100 BRITISH COPEPODA. 



localities, appears to be somewhat local in its distribu- 

 tion. I have notes of its capture as follows : Off 

 Porcressa Bay and in New Grimsby Harbour (Scilly 

 Islands), dredged in 10 20 fathoms; abundant in a 

 depth of three fathoms on a sandy bottom, Lough 

 Swilly ; off the islands of Bute and Cumbrae, sixteen 

 fathoms ; off Portincross, Ayrshire, fifteen fathoms ; 

 off Port Dinlleyn, Carnarvonshire, ten fathoms ; off 

 Robin Hood's Bay, Yorkshire (one specimen only 

 seen), thirty-five fathoms. 



Sub-family 6. NANNOPIKZE, nov. sub-fam. 



Anterior antennae short, 6-jointed ; secondary 

 branch of posterior antennae 1- jointed; mandible- 

 palp 1 -branched, second foot- jaw forming a prehensile 

 claw. Inner branches of the first and second pairs of 

 feet 2-jointed, non-prehensile, of the third and fourth 

 pairs rudimentary, and consisting only of a few setao, 

 fifth pair foliaceous, 2-branched. 



This sub-family contains only two genera, Nannopus 

 and Platychelipus, both of which are new. 



Genus 22. NANNOPUS,* nov. gen. 



Like Tachidius in general appearance. Head con- 

 solidated with thorax ; body-segments denticulated on 



* vavvoc, dwarf; TTOVI;, foot. 



