NO. I OPINIONS 68 TO ']'/ 23 



OPINION 73 



Five Generic Names in Crinoidea, Eighty-Six Generic 

 Names in Crustacea, and Eight Generic Names in 

 AcARiNA, Placed in the Official List of Generic Names 



Summary. — The following names are hereby placed in the Official List of 

 Generic Names: Crinoidea: Antedon, Bathycriiius, Holopus, Metacrintis, 

 Rhi::ocrinus. Crustacea: Acanthocycltis, Acfisa, Activomorpha, .Ictumnits, 

 Arcania, Archias, Arenseus, Atergatis, Atergatopsis, Banarcia, Bathynectes, 

 Bellia, Benthochascon, Caphyra, Carpilius, Carpilodcs, Carpoporus, Carupa, 

 Chlorodopsis, Ccciiophtliahiius, Corystoidcs. Cryptocncnius, Cyclodiiis, 

 Cymo, DacryopUuuinus, Daira, Dcckciiia, Dojiwcia, Ebalia, Epiloboccra, 

 Epimelus, Erimacrus, Erimetopus, Euphylax, Favus, Gccarciniiciis, Hepatella, 

 HetcroUthadia, Hctcronucia, Hetcrozius, Hydrothclphusa, Iliacantha, Iphicu- 

 lus, Iphis, Lva, Leucosilia, Lissocarciniis, Lithadia, Liipocyclus, Merocryptus, 

 Myrodes, Niicia, Nursia, A'ursilia, Onychomorpha. Orcophorus, Osachila, Fara- 

 cyclois, Farathclphusa, Parathranites, I'arilia, Fariphiculus, Fersephona, 

 Phlyxia, Pirimela, Platymcra, PodophthaUnus, Polyhiits, Portumnus, Potamo^ 

 carcimis, Potamonaiitcs, Fscudophilyra, Pscudothclphusa, Randallia, Scylla, 

 Spclccophorus, S phserocarcinus, Tclmcssus, Thalamita, Thalamitoidcs, Thala- 

 monyx, Tlos, Trachycarcinns, Trichodactyhis, Trichopeltarioii, Valdkna. 

 Acarina: Amblyomma, Argas, Dcrmacentor, Heeiiiaphysalis, Hyalomma, 

 Ixodes, Rlnpicctitor, Rhipiccphahts. 



Statement of case/ — Crinoidea. The following five generic 

 names in Crinoidea were submitted to the International Commission 

 by Mr. Austin Hobart Clark, Secretary to the Advisory Committee 

 on the Nomenclature of Echinoderms, with recommendation that 

 they be placed in the Official List of Generic Names. Mr. Clark 

 reported that all of these names are in general use, that under the 

 International Rules they are nomenclatorially correct and valid, and 

 that no question or objection can arise as to their status. The names 

 were brought to the attention of the zoological profession in the 

 Secretary's Circular Letter no. 7, dated May, 191 5. In reply to this 

 [Circular Letter no. 7], no person has raised any question or objec- 

 tion of any kind whatsoever to the five names here submitted for 

 final vote. These same five names, with identical types, were sub- 



* Abbreviations used in the above and following lists 

 tod = Type by original designation. 

 tpd^Type by present designation, 

 tsd = Type by subsequent designation. 

 mt =^ Type by monotypy. 



