9 
LEVITON, WOGAN, & ALDRICH: SCIENTIFIC BIBLIOGRAPHY OF THE 
CALIFORNIA ACADEMY OF SCIENCES, 1854-2010 
31-32 is not dated but assuredly was printed before 12 
March 1855. 
The article was reprinted in 1873 (pp. 30-31) in what has 
become known as the “Second edition, ” in which the 
original text was reset so that there is some discrepancy 
in pagination with the original publication (see com¬ 
ments by R.E.C Steams, 1873, Prefatory Note to This 
Editon. PCAS, 2nd ed., 1:[unnumbered p. 1]).) 
[150] Ayres, William Orville. 1855. [Description of a new 
fish species, Catostomus labiatus, with additional 
remarks on Catostomus ]. Proceedings of the California 
Academy of Natural Sciences, ser. 1, l(l):32-33. 
(Paper presented at the Academy meeting held on 5 
March 1855. The obverse side of p. 33, on which the 
description appears, that is p. 34, bears the signature 
date of 12 March so that it is likely that the signature 
bearing this and several early presentations following 19 
February (i.e., pages 31-34) were printed late in the 
evening of 12 March. 
However, the presentation did not appear in the The 
Pacific, a newspaper published in San Francisco, until 
16 March 1855. Ordinarily, the newspaper columns 
were then rearranged and printed in a signature in Pro¬ 
ceedings style following their publication in the news¬ 
paper; but the Proceedings signature bearing the Ayres 
presentation is dated 12 March, a discrepancey that is 
difficult to explain. Whatever the case, the latest date for 
the appearance of the new taxon is 16 March 1855. 
The article was reprinted in 1873 (p. 31-32) in what has 
become known as the “Second edition, ” in which the 
original text was reset so that there is some discrepancy 
in pagination with the original publication (see com¬ 
ments by R.E.C Steams, 1873, Prefatory Note to This 
Editon. PCAS, 2nd ed., 1:[unnumbered p. 1]).) 
[151] Ayres, William Orville. 1855. [Description of a new 
ichthyic type]. Proceedings of the California Academy 
of Natural Sciences, ser. 1, l(l):33-34,35. 
(Paper presented at the Academy meeting held on 12 
March 1855. The obverse side of p. 33, that is p. 34, 
bears the signature date of 12 March so that it is likely 
that the signature bearing this and several early presen¬ 
tations following 19 February (i.e., pages 31-34) were 
printed late in the evening of 12 March. Page 35 is part 
of the four-page signature that bears printing the date 26 
March. However, the presentation did not appear in the 
The Pacific, a newspaper published in San Francisco, 
until 23 March 1855. Ordinarily, the newspaper columns 
were then rearranged and printed in a signature in 
Proceedings style following their publication in the 
newspaper; but the Proceedings signature bearing the 
Ayres presentation is dated 12 March, a discrepancey 
that is difficult to explain. Whatever the case, the latest 
date for the appearance of the new taxon is 23 March 
1855. 
The article was reprinted in 1873 (p. 32-35) in what has 
become known as the “Second edition, ” in which the 
original text was reset so that there is some discrepancy 
in pagination with the original publication (see com¬ 
ments by R.E.C Steams, 1873, Prefatory Note to This 
Editon. PCAS, 2nd ed., 1:[unnumbered p. 1]).) 
[152] Ayres, William Orville. 1855. [Remarks on an abnor¬ 
mal development of a canine fetus]. Proceedings of the 
California Academy of Natural Sciences, ser. 1, 1(1):37. 
(Paper presented at the Academy meeting held on 19 
March 1855. Pages 35-38 constitute a four-page signa¬ 
ture that bears the printing date 26 March. But, because 
the issue of The Pacific did not appear until 30 March 
1855, there is a question about the dating of the signa¬ 
ture preceding publication of the newspaper.) 
[153] Ayres, William Orville. 1855. [A new flounder]. 
Proceedings of the California Academy of Natural 
Sciences, ser. 1, 1(1 [2 April]):40-41. 
(Paper presented at the Academy meeting held on 2 
April 1855. The presentation appeared in the The 
Pacific, a newspaper published in San Francisco, on 6 
April 1855. Ordinarily, the newspaper columns were 
then rearranged and printed in a signature in Proceed¬ 
ings style following their publication in the newspaper; 
but it is uncertain when the Proceedings signature bear¬ 
ing the Ayres presentation was issued other than in early 
April. Whatever the case, the taxon must be dated as of 
6 April 1855. 
The article was reprinted in 1873 (p. 39-40) in what has 
become known as the “Second edition, ” in which the 
original text was reset so that there is some discrepancy 
in pagination with the original publication (see com¬ 
ments by R.E.C Steams, 1873, Prefatory Note to This 
Editon. PCAS, 2nd ed., 1:[unnumbered p. 1]).) 
[154] Ayres, William Orville. 1855. [Descriptions of fish¬ 
es], Proceedings of the California Academy of Natural 
Sciences, ser. 1, l(l[April]):43-45. 
(Paper presented at the Academy meeting held on 16 
April 1855. The presentation appeared in the The 
Pacific, a newspaper published in San Francisco, on 20 
April 1855. Ordinarily, the newspaper columns were 
then rearranged and printed in a signature in Proceed¬ 
ings style following their publication in the newspaper; 
the signature including pages 43-45 carries only the 
month, April, but it is flanked by signatures dated April 
9 and April 30. Nonetheless, the taxon can be dated as of 
20 April 1855. 
The article was reprinted in 1873 (p. 42-44) in what has 
become known as the “Second edition, ” in which the 
original text was reset so that there is some discrepancy 
in pagination with the original publication (see com¬ 
ments by R.E.C Steams, 1873, Prefatory Note to This 
Editon. PCAS, 2nd ed., 1:[unnumbered p. 1]).) 
[155] Ayres, William Orville. 1855. [On a fish believed to 
be new]. Proceedings of the California Academy of 
Natural Sciences, ser. 1, l(l):47-48. 
(Paper presented at the Academy meeting held on 30 
April 1855. The Proceedings pages 47-48 are included 
