154 R- W. CROSSKEY 



deliberately not been placed around the authors' names for species that are no 

 longer in their original genera (largely because the custom of bracketing the names 

 of authors of transferred species does not lend itself to this type of catalogue in which 

 both year date and page reference are given). 



Spellings of names accord with the rigid requirements of the International Code 

 of Zoological Nomenclature. Ordinarily the original spelling is correct for each 

 name, but it has sometimes been necessary to change the terminations of adjectival 

 specific names (in accordance with Article 30 of the Code) when these have been 

 transferred to a genus of different gender or have been wrongly formed. (The 

 great majority of tachinid generic names are feminine, but a few such as those 

 with -soma and -stoma suffixes are neuter, and a few such as those with -ops and 

 -oides suffixes are masculine.) 



Citations of the mode of fixation of type-species accord with the Code, and are 

 'original designation', 'monotypy' and 'subsequent designation' (with a reference 

 to the designator given); there are a very few instances of 'subsequent monotypy'. 

 Many monotypic genera when originally erected had the type-species originally 

 designated, in which case the mode of fixation is cited solely as 'original designation', 

 but the words 'and monotypy' are added in the few special 'gen. n., sp. n.' situations 

 of the kind covered by Article 68 (a) (i) of the Code: this mainly applies to names 

 of Brauer & Bergenstamm and Mesnil. 



Specific synonyms are indented but their citations and references are dealt 

 with in the same manner as the valid names. All valid names of whatever rank 

 are printed in bold-face italic type and junior synonyms in non-bold italics; other 

 invalid names (such as incorrect subsequent spellings, nomina nuda, misidentifica- 

 tions, homonyms) are also printed in non-bold italics. 



If a name was originally proposed for a genus but is now employed in the catalogue 

 as the valid name for a subgenus the words 'as genus' are appended in parentheses 

 after the page reference; similarly, if a name was proposed as a subgenus but is 

 now employed for a genus its original status is shown by appending the words 

 'as subg. of . . .'in parentheses after the page reference and giving the name of the 

 genus as required. If a species-group name is now employed in a different status 

 from the original then the original status is indicated in parentheses after the page 

 reference, e.g. 'as var. of corvinoides Wulp' or 'as ssp. of ruralis' (specific author's 

 name omitted if the infraspecific taxon remains in the same genus as the specific 

 taxon in which it was proposed). 



Type-information. The following information is given for the primary type(s) 

 (holotype, lectotype, neotype, syntypes if no lectotype designated) of each available 

 species-group name listed in the catalogue: type-status; sex of type; type-locality; 

 type-depository and location; a statement in the form '[examined]' to show when 

 the primary type has been seen personally. 



The following points should be noted about the data concerning primary types. 



(1) Type-status. The primary type is cited as holotype if it is clear from the 

 original publication that only one specimen was available at the time of description 

 (whether designated in some way as 'type' or not) and, of course, whenever a single 



