World Polychaeta Database (WPolyD). Issue is the report for year 1900, but cover page states published in 1902. Available as pdf of whole issue from NOAA (this is >300 Mb). The Treadwell pdf stored here at WoRMS is extracted from that file
[None. Introduction as follows:]
The material here described was collected by the expedition sent to Porto Rico in the winter of 1898-99, by Hon. George M. Bowers, United States Commissioner of Fish and Fisheries. The collection included 85 species of Polychaetes, of which 32, so far as I could determine, are new. All observations were made on preserved material. Where no other preserving fluid is indicated in descriptions of color, etc., it will be understood that the specimen was in alcohol. If formalin was used, that fact is noted in the description.
For assistance in procuring literature I am indebted to Dr. H. M. Smith, of the United States Commission of Fish and Fisheries, Prof. H. C. Bumpus, of Brown University, and Prof. H. P. Johnson, of the University of California.
All the figures in the text were drawn by the author.
