THE CRUSTACEA OF NEW JERSEY. 475 



Order COPEPODA. 



Sub-Order EUCOPEPODA. 



Tribe Gymnoplea. 



Pamily LERN^OPODID^. 



Genus NAOBRANCHIA Hesse. 



Naobranchia pomolobi Fowler. 



Genus ACHTHERES Nordmann. 



Achthei'es Nordmann, Mikrog. Beitr., 1832, p. 63. Type Achthercs percarum 

 Nordmann, monotypic. 



Achtheres lacae Kroyer. 



Achthcres laca (Kollar) Kroyer, Naturh. Tidssk., (3) II, 1863, pp. 348, 349, 

 PI. 17, fig. 6. North America (in "Perca laca" possibly identical with 

 fStizostcdion z'itreuvi). 



Underwood, Bull. 111. Lab. N. Hist., II. October, 1886, p. 335. North 



America. 



Middle Atlantic States (included as pos.sibly occurs on 



Stisostedion vitreum, likely the intended host?). 



Family CHONDRACANTHID^. 



Genus CHONDRACANTHUS Delaroche. 



CJiondracanthiis Delaroche, Bull. Soc. Philomath. Paris, 181 r. p. 270. Type 



Choiidi'acaiithus zci Delaroche, monotypic. 

 Entomoda .Lamarck, An. San. Verteb., Ill, 1818. p. 68. Type Lcrncca cor- 



nuta Miiller, second species. 

 Aiiops Oken, Lehrbuch Natnrg., I, 1815. p. 358. Type Aiiops radiatiis Oken, 



monotypic. 



Chondracanthus cottunculi R. Rathbun. 



Chondracanthus cottunculi R. Rathbun, Proc. U. S. Nat. Mus., IX, 1886, p. 

 322, PI. II. figs. 1-7. Off Georges Bank, off Martha's Vineyard and South 

 of Block Island (on Cottunculus torvus. C. niircrops and sp.) 



Gulf Stream. 



