IV TABLE OF CONTENTS. 



Page 



Cockerell, T. D. A. Some fossil fish scales from Peru. 



No. 2355. June 10, 1921 l 19-20 



New genus: Characilepis. 



New species: Characilepis tripartitus. 



and Grace Sandhouse. Some Eocene insects of 



the family Fulgoridae. No. 2380. September 15, 1921 x __ 455-457 

 New genus: Thaumastocladius. 



New species: Hammapteryx tripunctata, Lithopsis dubiosa, Thau- 

 mastocladius simplex. 

 Cushman, Joseph A. Foraminifera from the north coast of 



Jamaica. No. 2360. June 10, 1921 * 47-82 



New species: Spiroloculinaarenata, Massilina inaequalis . 

 New varieties: Quinqueloculina parkeri, var. occidentalis, Triloculina 

 carinata, var. obscura. 

 Ewing, H. E. New Nearctic spider mites of the family Te- 



tranychidae. No. 2394. October 7, 1921 * 659-666 



New species: Oligonychus americanus, O. major, Bryobia brevicornis, 

 B. longicornis, Raphignathus viridis, Syncaligus tridentifer, S. 

 quercus, Tetrany china tritici. 

 Foshag, William F. The crystallography and chemical 



composition of Creedite. No. 2376. August 4, 1921 l __ 419-424 

 Gilmore, Charles W. The fauna of the Arundel formation 



of Maryland. No. 2389. October 7, 1921 ' 581-594 



Hall, Maurice C. Two new genera of Nematodes, with a 

 note on a neglected nematode structure. No. 2386. 



October 5, 1921 1 541-546 



New genera: Oslerus, Hyostrongylus . 

 Hay, Oliver P. Descriptions of species of pleistocene ver- 

 tebrata, types or specimens of most of which are pre- 

 served in the United States National Museum. No. 



2391. October 13, 1921 * 599-642 



New genus: Chasmaportheies. 



New species: Camelus arctoamericanus, Marmota arrodens, Tho- 

 momys scudderi, Cynomys niobrarius, C. tuitus, Procamelus coconi- 

 nensis, P. longurio, Marmota arizonae, Citellus taylori, Lepus benja- 

 mini, Brachylagus browni, Taxidea robusta, Chasmaporthetes 

 ossifragus. 



Henderson, John B. See Torre, de la, Carlos 247-267 



Jordan, David Starr. Description of deep-sea fishes from 

 the coast of Hawaii, killed by a lava flow from Mauna 



Loa. No. 2392. October 14, 1921 * 643-656 



New genera: Rhechias, Nyctimaster, Rhyacanthias, Vesposus, Loa. 

 New species: Rhechias armiger, Nyctimaster reinhardti, Rhyacanthias 

 carlsmithi, Vesposus egregius, Loa excelsa, Peristedion gilberti. 



Kennedy, Clarence Hamilton. Some interesting dragon- 

 fly naiads from Texas. No. 2390. October 10, 1921 l __ 595-598 



> Date of publication. 



