68 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxii. 



Trichodectes sphaerocephalus Nitzsch, Germar's Mag. d. Ent., 1818, III, 

 p. 29G. — OsBORN, Insects Affecting Domestic Animals, 1896, p. 237. 

 From domestic sheep (Canada and Iowa). 

 Trichodectes limbatus Gervais, Apteres, III, 1844, p. 313, pi. vii, fig. 1. — 

 OsBOBN, Insects Affecting Domestic Animals, 1896, p 237. 

 From domestic goat (Hassall collection, Baltimore). 

 Trichodectes suhrostratus Nitzsch, Germar's Mag. d. Ent., 1818, III, 

 p. 296..— OSBORN, The Pedicali and Mallophaga, 1891, p. 42, fig. 31; 

 Insects Affecting Domestic Animals, 1896, p. 237. 



From domestic cat ("Fitch and other American collections"). 

 Trichodectes retusus Nitzsch, Germar's Mag. d. Ent., 1818, III, p. 296. — 

 OsBORN, Notes on Mallophaga and Pediculidee, Oanad. Ent., 1884, 

 XVI, p. 98; Insects Affecting Domestic Animals, 1896, p. 237. 

 From Putorms ermineus (locality?) and the weasel (Ames, Iowa.) 

 Trichodectes setosus Giebel, Zeitschr. f. ges. ISTaturwiss., 1861, XYII, 

 p. 86. — OsBORN, Insects Affecting Domestic Animals, 1896, p. 239, 

 fig. 145. 

 From the porcupine Erethizon dorsatum (Nebraska). 

 Trichodectes crassus jSTitzsch, Germar's Mag. d. Ent., 1818, III, p. 295.— 

 OsBORN, Insects Affecting Domestic Animals, 1896, p, 237. 

 From Procyon lotor (Burnett collection). 

 Trichodectes geomydis Osborn, The Pediculi and Mallophaga, 1891, p. 54, 

 fig. 42; Insects Affecting Domestic Animals, 1896, p. 239, fig. 146. 

 From Geomys bursarius (Ames, Iowa) and Thomomys hottce (Cali- 

 fornia). 

 Trichodectes parallelus Osborn, Insects Affecting Domestic Animals, 

 1896, p. 240, fig. 148. 

 From the "deer" (species!) (Cornell collection). 

 Trichodectes tihialis Osborn, Insects Affecting Domestic Animals, 1896, 

 p. 240, fig. 147. 

 From black-tailed deer (Baker collection). 

 Trichodectes castoris Osborn, Insects Affecting Domestic Animals, 1896, 

 p. 241, fig. 149. 

 From the beaver (locality f). 

 Trichodectes mephitidis Osborn, Insects Affecting Domestic Animals, 

 1896, p. 242, fig. 150. 



From polecat, Spilogale interrupta (Tama County, Iowa), and from 

 Mephitis mephitica (Nebraska and California). 

 Trichodectes quadraticeps Chapman, Entomological News, 1897, VIII, 

 p. 185, pi. IX. 



From the fox, Urocyon virginianus (Palo Alto, California). 

 Trichodectes californicus Chapman, Entomological News, 1897, VIII, 

 p. 186, pi. IX. 

 From the pocket mouse, Perognatlius sp. (Baja California). 



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