Acari
Palpigradi
Scorpiones
Amblypygi
Pseudoscorpiones
Solifugae
Araneae
Ricinulei
Thelyphonida
Opiliones
Schizomida
Gary L. Miller
Volume 19 Number 3
1991 Vol. 19-3 Pages: 227–228
Rosemary G. Gillespie
1991 Vol. 19-3 Pages: 229–230
Linden Higgins
1991 Vol. 19-3 Pages: 231–232
Charles E. Griswold
1991 Vol. 19-3 Pages: 233–234
Yuri Marusik and Victor Fet
1991 Vol. 19-3 Pages: 235–236
Carmen Fernández-Montraveta, Rafael Lohoz-Beltra and Joaquin Ortega
Volume 19 Number 2
1991 Vol. 19-2 Pages: 73–79
Carmen Fernández-Montraveta and Joaquin Ortega
1991 Vol. 19-2 Pages: 80–84
Deborah Roan Smith and Wesley M. Brown
1991 Vol. 19-2 Pages: 85–87
Ignacio M. Vázquez
1991 Vol. 19-2 Pages: 88–92
Roberto M. Capocasale
1991 Vol. 19-2 Pages: 93–96
Jean-Luc Gundermann, Andre Horel and Chantal Roland
1991 Vol. 19-2 Pages: 97–101
Vladimir I. Ovtsharenko and Norman I. Platnick
1991 Vol. 19-2 Pages: 102–104
T. G. Benton
1991 Vol. 19-2 Pages: 105–110
Douglass H. Morse
1991 Vol. 19-2 Pages: 111–114
Norman I. Platnick and Vladimir I. Ovtsharenko
1991 Vol. 19-2 Pages: 115–121
W. David Sissom
1991 Vol. 19-2 Pages: 122–125
Leticia Avilés and Wayne Maddison
1991 Vol. 19-2 Pages: 126–135
Gerd Alberti and Frederick A. Coyle
1991 Vol. 19-2 Pages: 136–149
Johannes R. Henschel
1991 Vol. 19-2 Pages: 150–152
David W. Zeh and Jeanne A. Zeh
1991 Vol. 19-2 Pages: 153–154
Nikolaj Scharff
1991 Vol. 19-2 Pages: 155–156
Norman I. Platnick and Martin J. Ramírez
Volume 19 Number 1
1991 Vol. 19-1 Pages: 1–3
1991 Vol. 19-1 Pages: 4–28
Gail E. Stratton
1991 Vol. 19-1 Pages: 29–39
Yael Lubin, Mandy Kotzman and Stephen Ellner
1991 Vol. 19-1 Pages: 40–48