PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 307 Nomeus gronovii. Serranus trifurcus.* Stenotomu.s caprinus. Diabasis auroliueatus. Apogon maculatus. Apogou alutus. Mullus barbatus auratus. MenticiiTiis nebulosus.* Chromis insolatus. Chromis enchrysurus. Platyglossus caudalis. Platyghssus florealis. Astroscopus anoplus.* Opistlt ofjnathus lo n cli urns. Porich thys plectrodon. Indiana Uni\^rsity, May 15, 1882 Gohiesox virgatnlus. Gobius boleosoma. logiossus calliiiras. Ch asm o des sa h u rrw. Isesthes ionfhas. Isesthes scrutator. Blennius stearnsi. Genypterus omostlyma. Ophidium graellsi. ParaJlchthys alb'ujutta. ParaUchthys squamilenfus. Hemirhombus pai-tulus. Etropus crossotus. Aphoristia plagiusa. A REVIEW OF THE SYiVCJNATHI^M: OF THE 1 >ITED STATE!!), MITH A I>E!!$C;RIPTIOi> OF O.XE XEIV SPEMES By JOSEPH SWAII^f. Tlie number of species of Pipe-fishes on our coasts has beeu uncer-tain, owing to the fact that the fishes have not been carefully studied in large collections from their various localities. The writer has endeavored to go over the group critically, to ascertain the number of species and to find the limit of variation in the characters of each species. ]N"early all the specimens studied by me have beeu collected by Professors D. S. Jordan and C. H. Gilbert; some of them belong to the United States National Museum, the others to the museum of Indiana University. The writer wishes to express his great obligations to Professor Jordan for the use of his collection and library, and for many valuable sugges-tions. ANALYSIS OF SPECIES. . Toj) of liead strongly carinated. i. Breast shields not covered by soft skiu; lower jaw slightly included; opercle with a prominent ridge; snout short; D. 23, covering 1+4 rings; rings 18+30; belly concave; twelve irregular brown cross-bands on body (CorijthrokhiJii/s Kaup) Zatropis, 1. bb. Breast shields covered by soft skin; lower jaw included; D. 41; rings 19+39. (Dermatostelhus Gill) Punctipinne, 2.