OCCASIONAL PAPERS OF THE CALIFORNIA ACADEMY OF SCIENCES 
Number 158 
Natural Sciences , ser. 1, 1(1 [25 December/1 January]): 
18-19. 
(Paper presented at the Academy meeting held on 11 
December 1854. 
This presentation was printed first in The Pacific, a 
newspaper published in San Francisco, shortly after the 
meeting (15 December 1854). The newspaper columns 
were then rearranged and printed in a signature in 
Proceedings style; the signature containing p. 18 (pp. 
15-18) of this paper has a signature print date of 25 
Dec.; the signature including p. 19 of this paper has a 
print date of 1 January 1855 (signature pp. 19-22) and 
includes additional remarks presented at Academy meet¬ 
ings held on 18 and 25 Dec. 
The article was reprinted in 1873 (p. 17-18) 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]).) 
[144] Ayres, William Orville. 1855. [Two new cyprinoid 
fish]. Proceedings of the California Academy of Natural 
Sciences, ser. 1, 1(1 [1 January]):20-21. 
(Paper presented at the Academy meeting held on 18 
December 1854. This presentation was printed first in 
The Pacific, a newspaper published in San Francisco, 
shortly after the meeting (22 December 1854). The 
newspaper columns were then rearranged and printed in 
a signature in Proceedings style; the signature contain¬ 
ing pp. 20-21 has a print date of 1 January 1855. 
The article was reprinted in 1873 (p. 18-20) 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]).) 
[145] Ayres, William Orville. 1855. [Description of a new 
Cyprinoid fish]. Proceedings of the California Academy 
of Natural Sciences, ser. 1, 1(1 [1 January]) :21-22. 
(Paper presented at the Academy meeting held on 25 
December 1854. This presentation was printed first in 
The Pacific, a newspaper published in San Francisco, 
shortly after the meeting (29 December 1854). The 
newspaper columns were then rearranged and printed in 
a signature in Proceedings style; the signature contain¬ 
ing pp. 20-21 has a print date of 1 January 1855. 
The article was reprinted in 1873 (pp. 20-21) 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]).) 
[146] Ayres, William Orville. 1855. [On two species of 
Liparis], Proceedings of the California Academy of 
Natural Sciences, ser. 1, 1(1 [1 Febmary]):23-24. 
(Paper presented at the Academy meeting held on 8 
January 1855. This presentation was printed first in The 
Pacific, a newspaper published in San Francisco, short¬ 
ly after the meeting (12 January 1855). The newspaper 
columns were then rearranged and printed in a signature 
in Proceedings style; the signature containing pp. 23-24 
has a print date of 1 February 1855. 
The article was reprinted in 1873 (p. 21-23) 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]).) 
[147] Ayres, William Orville. 1855. [Descriptions of fish¬ 
es], Proceedings of the California Academy of Natural 
Sciences, ser. 1, 1(1 [1 Febmary]):25-27. 
(Paper presented at the Academy meeting held on 22 
January 1855. This presentation was printed first in The 
Pacific, a newspaper published in San Francisco, short¬ 
ly after the meeting (26 January 1855). The newspaper 
columns were then rearranged and printed in a signature 
in Proceedings style; the signature containing pp. 25-27 
has a print date of 1 February 1855. 
The article was reprinted in 1873 (p. 24-26) 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]).) 
[148] Ayres, William Orville. 1855. [Description of a lam¬ 
prey], Proceedings of the California Academy of 
Natural Sciences, ser. 1, 1(1 [19 Febmary]):28. 
(Paper presented at the Academy meeting held on 5 
February 1855. This presentation was printed first in 
The Pacific, a newspaper published in San Francisco, 
shortly after the meeting (9 February 1855). The news¬ 
paper columns were then rearranged and printed in a 
signature in Proceedings style; the signature containing 
p. 28 has a print date of 19 February 1855, but it is like¬ 
ly it was actually printed a few days later, most likely 
before 26 February and certainly before 12 March 1855. 
The article was reprinted in 1873 (p. 26-27) 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]).) 
[149] Ayres, William Orville. 1855. [On a specimen repre¬ 
senting a new generic type among fishes]. Proceedings 
of the California Academy of Natural Sciences, ser. 1, 
1(1):31-32. 
(Paper presented at the Academy meeting held on 26 
February 1855. This presentation was printed first in 
The Pacific, a newspaper published in San Francisco, 
shortly after the meeting (2 March 1855). The newspa¬ 
per columns were then rearranged and printed in a sig¬ 
nature in Proceedings style; the signature containing pp. 
