NEW MALLOPHAGA. 33 



published in Germar's Magazin der Entomologie, vol. 

 iii, 1818, Halle, presents the essential features of the 

 classification of the group now used, and contains the 

 earliest accepted nomenclature. Since the publication of 

 this pioneer memoir four monographic works have been 

 issued, together, needless to say, with numerous lesser 

 memoirs containing descriptions of new species, compiled 

 and more or less comprehensive conspecti of the group 

 in text-books, and morphological treatises. 



The monographs indispensable to the student of the 

 Mallophaga are Henry Denny's Monographia Anopluro- 

 rum Britannia?, or an Essay on the British Species of Par- 

 asitic Insects, 1842, London, illustrated with colored 

 plates; Christoph Giebel's " Insecta Epizoa, die auf 

 Saugethieren und Vogeln schmarotzenden Insekten, nach 

 Chr. L. Nitzsch's Nachlass bearbeitet, mit XX Tafeln 

 nach Nitzsch's Handzeichnungen," 1874, Leipzig; E. 

 Piaget's " Les Pediculines, Essai Monographique, vol. i, 

 Texte, vol. ii, Planches, 1880, Supplement, 1885," Ley- 

 den; and O. Taschenberg's "Die Mallophagen, mit be- 

 sonderer Beriicksichtigung der von Dr. Meyer gesam- 

 melten Arten," Nova Acta der Ksl. Leop.- Carol. 

 Deutschen Akademie der Naturforscher, Band xliv, No. 

 1, 1882, Halle. Of these monographs Denny's is limited 

 to a consideration of the parasites found on birds col- 

 lected in England, his descriptions are too brief, and the 

 colored figures too superficially drawn, so that it is often 

 impossible to recognize from his description and illustra- 

 tion the species of parasite which he had under consider- 

 ation. Giebel's monograph, as indicated in the title, is 

 based on the unpublished descriptions and drawings of 

 Nitzsch. Giebel also had access to the specimens col- 

 lected and prepared by Nitzsch. The work is a monu- 

 mental one, although many of the descriptions are incom- 



Proc. Cal. Acad. Sol, 2d Ser., Vol. VI. ( 3 ) March 9, 1896. 



