NEW MALLOPHAGA. 433 



sects. * Denny, t Giebel, J Piaget and § Taschenberg 

 add nothing in their monographs to our knowledge of 

 the mouth-parts. Giebel repeats Nitzsch's explanation 

 of them; Piaget refers the palpi of the Liotheidae to the 

 maxillae, and also says the labium of the Philopteridae 

 has 2-segmented palpi, referring doubtless to the para- 

 glossae ; Taschenberg in his passing reference to the 

 mouth-parts repeats Piaget's statements. ||Grosse was 

 the first to understand and to explain what seems really to 

 be the true structure and homologies of the mouth-parts. 

 He first indicated the labial character of the conspicuous 

 palpi which are present in all of the Amblycera, called 

 the labial palpar-like processes paraglossae (see figs. 4 

 and 5, plate lx, pg) , and gave some account of that 

 sclerite in the oesophagus, which to my mind is so sug- 

 gestive in its bearing on the phylogeny of the group. An 

 abstract of Grosse's paper, by Prof. Geo. Macloskie, 

 was published in the "American Naturalist," vol. xx, p. 



34° • 



The following detailed accounts, with accompanying 



figures, of the mouth-parts of Ancistrona gigasY '., Lcemo- 

 bolhirium sp., Eurymetopus taurus N., and Goniodes 

 ccrvinicornis G., are based on dissections made in my 

 laboratory by Mr. R. E. Snodgrass, and are mostly in the 

 words of his notes. The drawings also were made by 

 Mr. Snodgrass. 



* Denny, Henry. Monographia Anoplurornrn Brittannia?, 1842, London. 



t Giebel, Christoph. Iusecta Epizoa, 1874, Leipzig. 



t Piaget, E. Les Pediculines, 1880; Supplement, 1885, Leyden. 



$ Taschenberg, O. Die Mallophagen, 1882, Halle. 



||Grosse, Franz. 1. c. 



