476 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxv. 



ACHTHERES COREGONI Smith. 



Achthcrcs coregoni Smith, 1874, p. 604, pi. in, fig. 17. 

 Host and record of specimens. — Several female specimens were 

 taken from a species of Coregonus in the Yukon River, Alaska, and 

 are Cat. No. 6113, U.S.N.M. 



ALPHABETICAL LIST OF HOSTS, WITH THE PARASITES BOUND <>\ 



EACH. 



Citharichthys, species. The soft flounders. 



Phrixocephalus cineinnatus, new species, attached to eye. 



Coregonus nelsonii Bean. The hump-backed whitefish. 



Lernceopoda extumescens Gadd, fastened to the sides of the 

 gill cavity. 



Coregonus, species. The whitefish. 



Achtheres coregoni Smith, from the gill cavity. 



Cynoscion nobilis Ay res. The white sea bass. 



Lepeophtheirus thompsoni Baird, from the outside of the body. 



Brachiella gracilis, new species, from the mouth. 

 Gadus macrocephalus Tilesius. Alaska codfish. 



Lepeophtheirus parviventris "Wilson, from the outside surface. 



Anchorella uncinata Midler, from the gills and mouth. 

 Galeorhinus zyopterus Jordan and Gilbert. The soup-fin shark. 



Pandarus cranchii Leach, from the fins and skin. 



Eudactylina uncinata, new species, from the gill filaments. 



Opimia gracilis, new species, embedded in the flesh on the walls 

 of the mouth and gill cavities. 

 Hydrolagus colliei Lay and Bennett. The elephant-fish. 



Chondr acanthus epachthes, new species, from the gill cavity. 



('aligns gurnardi Kroyer, from the outside surface. 

 Hypsypops rubicundus Girard. The garibaldi. 



Artacolax (Bomolochus) ardeolce Kroyer, from the gill fila- 

 ments. 

 Lepidopsetta bilineata Ayres. 



Lepeophtheirus parviventris Wilson, from the outside surface. 

 Lycodontis mordax Ayres. The California conger eel. 



Hatschekia pinguis, new species, from the gills. 

 Mola mola Linnaeus. The sunfish. 



Lcpcophi hcirus nord mainiii Milne-Edwards, and L. insignis, 

 new species, from the outside surface. 



Cecrops latreillii Leach, from the gills. 



