PACE: ON THE COLUMBELLID A. 47 
REFERENCE LIST OF SPECIFIC AND VARIETAL NAMES. 
The following list is an attempt at a complete record of all! the 
trivial names, which up to the end of 1901 have been associated 
with actual or supposed? members of the Columbellide ; the more 
important manuscript names, typographical errors, and misquotations 
occurring in conchological literature have also been included. 
While the list does xot claim to be a synonymie one, certain of the 
names are indicated as being synonyms, which, as will be demonstrated 
in a future paper, must be discarded. 
The particulars entered under each name-heading are arranged in 
the following order :— 
(a) The name of the supposed species or variety. 
Those names printed in italics are ones which, in my opinion, are 
inadmissible. It must not, however, be supposed that all those 
printed in Roman type are to be regarded as valid ones ; a name not 
being italicized merely signifies that I have not satisfied myself that 
it must be discarded. 
(b) The name of the author. 
The three members of the Sowerby family bearing the initials G. B. 
are distinguished by the numerals 1, 1, and 111. 
(c) The date of pubiication as printed on the title-page or elsewhere 
in the volume to which reference is made. If this nominal date of 
publication can be proved to be erroneous, it is followed by the true 
date enclosed within square brackets. 
(d) The author’s generic reference of the form in question. Where 
practicable, this has been copied exactly, and is then printed within 
quotation marks, 
(e) The place of description. 
(f) The collection in which the type-specimen is, or was, contained. 
Any additional information not furnished in the original description 
regarding the location of the type, is placed within square brackets. 
(g) The ‘type-locality,’ i.e., either the habitat of the actual type- 
specimen or specimens, or the ‘distribution’ of the form as given 
in the original description. 
Species and varieties of which the type-specimens are fossil are 
marked +; where it is uncertain whether the type is based upon 
a recent or a fossil example the dagger is inverted |. 
toxe) 
It has been my endeavour to make this list complete up to the time of writing 
but it is yet certain to contain many imperfections, and I shall be grateful at 
readers will call attention to any names which have been omitted, or point out 
any errata, typographical or otherwise. Information as to the present location 
of many of the types is also greatly desired. 
2 Many of the forms the names of which are included in the list as having been at 
some time or other referred to the Columbellidz, are now known not to belong 
to that family ; and, with advancing knowledge, many others will certainly also 
have to be removed. On the other hand, further research will in all probability 
prove that several forms at present referred to the Pleurotomide and to such 
genera of doubtful limits, as Pisania, are really Columbelloid in their affinities. 
