ART. 14 NORTH AMERICAN COPEPODS MAESH 11 



DIAPTOMUS LEONINICOLLINUS Marsh, 1913 



D. JeoninicolJimts has been found only near I^ion Hill in the 

 Panama Canal Zone. 



DIAPTOMUS LEPTOPUS Forbes, 1882 



D. lepfopns was found by Forbes near Normal, 111., and at Woods 

 Hole, Mass. Herrick and Turner 1895 reported it from Minnesota. 

 Pearse 1906 found it at Cambridge, ISIedford, and Welle^ley, Mass. 

 Stromsten 1920 found it in the Okoboji region in Iowa. The author 

 has found it near Ripon, Wis., at Marquette, Mich., at Hammond 

 and Gary, Ind., at Kremmling, Colo., and in Panguitch Lake in 

 southern Utah. Juday in correspondence states that he has found 

 it in Devils Lake, X. Dak. Its distribution is shown in Figure 2. 



DIAPTOMUS LINTONI Forbes, 1893 



Forbes' original description of D. lintoni was from material col- 

 lected in the lakes of Yellowstone Park. Dodds 1915«., 1915&, 1917, 

 found it near Tolland, Colo., and the author found it in Buffalo 

 Horn Lake in the Gallatin Valley, Mont., and in material collected 

 by Prof. Chancey Juday in Laguna Canyon, Calif. Its distribution 

 is shown in Figure 8. 



DIAPTOMUS MARSHI Juday, 1914 



Juday's original description was from collections made at Puerto 

 Barrios and Los Amates, Guatamala. The author found it in the 

 Comacho and Mindi Reservoirs and the Rio Trinidad in the Canal 

 Zone, and in collections made by F. J. Dyer at La Ceiba, Honduras. 

 Pearse 1915 collected it at Fundacio, Colombia. D. colonibiensis 

 Thiebaud 1914, found in Laguna de Ubaque, Colombia, is D. mwshi. 

 Dodds 1926 reported it in several localities in the Canal Zone. Its 

 distribution is shown in Figure 6. 



DIAPTOMUS MEXICAN us. new species 



Many years ago a single specimen of a Diaptonvu-s was found in a 

 collection made by Rev. C. D. Campbell near Mexico City. The 

 specimen was a mature male evidently allied to D. fraiieiscanus 

 Lilljeborg, but with characteristics which clearly distinguished it 

 from that species. Of course, a new species should be founded on a 

 considerable number of individuals; therefore the notes on this ani- 

 mal were kept in readiness for use wdien further material should 

 come to hand. In spite of a generation or so of delay, the creature 

 has not again shown up. It is, however, so distinctly different from 

 others that it seems wise to give it a name. Very little collecting 

 of Copepoda has been done in Mexico, and it seems highly probable 

 that others mav find it later. 



