The Nervous System of Neanura Gigantea Tull, 95.
Shorter Articles, 98.
Wants and Exchanges, 102.
Biology of the North American Crane-Flies (Tipulidæ Diptera), 105.
The Geographical Distribution of Our Common Red Spider, Tetranychus Telarius Linn., 121.
The Eleventh Kermes (Coccidæ) from California, 133.
The Central Nervous System of the Pycnogonid Lecythorhynchus, 134.
The Distribution of Collembola in the Claremont-Laguna Region of California, 137.
Wants and Exchanges, 185.
Pseudoscorpions in the Claremont-Laguna Region, 187.