14 
OCCASIONAL PAPERS OF THE CALIFORNIA ACADEMY OF SCIENCES 
Number 158 
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]).) 
[198] Ayres, William Orville. 1873. [Description of a new 
ichthyic type]. Proceedings of the California Academy 
of Natural Sciences, 2nd ed. [reprint of 1st ed.], ser. 1, 
l(l[November]):32-34. 
(Paper presented at the Academy meeting held on 12 
March 1855 and published in PCANS, vol. 1, pp. 33-35. 
The obverse side ofp. 33, that is p. 34, bears the signa¬ 
ture date of 12 March so that it is likely that the signa¬ 
ture bearing this and several early presentations follow¬ 
ing 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. 
The article was reprinted in 1873 (pp. 32-34) 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]).) 
[199] Ayres, William Orville. 1873. [Remarks on an abnor¬ 
mal development of a canine fetus]. Proceedings of the 
California Academy of Natural Sciences, 2nd ed. 
[reprint of 1st ed.], ser. 1, l(l[November]):36. 
(Paper presented at the Academy meeting held on 19 
March 1855 and published in PCANS p. 37. Pages 35- 
38 constitute a four-page signature that bears the print 
date 26 March. 
The article was reprinted in 1873 (p. 36) 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].) 
[200] Ayres, William Orville. 1873. [A new flounder]. 
Proceedings of the California Academy of Natural 
Sciences, 2nd ed. [reprint of 1st ed.], ser. 1, l(l[Novem- 
ber]):39-40. 
(Paper presented at the Academy meeting held on 2 
April 1855 and published in PCANS pp. 40-41. 
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]).) 
[201] Ayres, William Orville. 1873. [Descriptions of fish¬ 
es], Proceedings of the California Academy of Natural 
Sciences, 2nd ed. [reprint of 1st ed.], ser. 1, l(l[Novem- 
ber/December]):42-44. 
(Paper presented at the Academy meeting held 16 April 
1855. Pages 43-45 are included in a 4-page signature 
that carries only the month, April, but it is flanked by 
signatures dated April 9 and April 30. 
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]).) 
[202] Ayres, William Orville. 1873. [On a fish believed to 
be new]. Proceedings of the California Academy of 
Natural Sciences, 2nd ed. [reprint of 1st ed.], ser. 1, 
l(l[December]):46-47. 
(In the original issue of the PCANS in 1855, pages 
47-48 are included in a 6-page signature [47-52] dated 
April 30. Ayres paper was presented at the Academy 
meeting held on 30 April; thus the signature bearing his 
comments must ave been published later that evening. 
The article was reprinted in 1873 (p. 46-47) 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]).) 
[203] Ayres, William Orville. 1873. [Remarks on the 
ground mole]. Proceedings of the California Academy 
of Natural Sciences, 2nd ed. [reprint of 1st ed.], ser. 1, 
1(1 [December]): 5 3. 
(Paper presented at the Academy meeting held 21 May. 
In the original 1855 publication (PCNAS p. 54), two 
pages, 53-54, are undated but they must have been print¬ 
ed in May because they are followed by a signature 
dated May, 1855. 
The article was reprinted in 1873 (p. 53) 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]).) 
[204] Ayres, William Orville. 1873. [On a new species of 
fish [of the genus Apodichthys ]. Proceedings of the 
California Academy of Natural Sciences, 2nd ed. 
[reprint of 1st ed.], ser. 1, l(l[December]):54-55. 
(Presented at the Academy meeting held on 21 May; in 
the original PCANS, pp. 55-56 are included in a signa¬ 
ture printed sometime during the month of May. 
The article was reprinted in 1873 (p. 54-55) 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]).) 
[205] Ayres, William Orville. 1873. [On a new fish of the 
genus Cebidichthys ]. Proceedings of the California 
Academy of Natural Sciences, 2nd ed. [reprint of 1st 
ed.], ser. 1, 1(1 [December]):58-59. 
(In the 1855 PCANS, Ayres’ remarks were presented at 
the Academy meeting held on 4 June. Page 58 of those 
