VEKNON L. KELLOGG. 



This new Mallophagan form unites in striking manner the im- 

 portant antennal characters of the family Philopteridae with the 

 general habitus and body characters of the family Liotheidae. 

 The shape of head, and the distinctly free metathoracic segment 

 are characteristics heretofore peculiar to the genera Menopon and 

 Trinoton (of the Liotheidae), but the short, slender, five-segmented 

 antennae not lying in special antennal cavities identify the species 

 as a Philopterid, but one not assignable to any known Philopterid 

 genus. The new form represents a Menopon- and Trinoton-\\\<Q 



genus in that family to which 

 Menopon and Trinoton do not 

 belong ! The only other Mal- 

 lophagan species taken from the 

 penguin genus Aptenodytes is 

 Goniodcs brci'ipes, a small spe- 

 cies very unlike this new form, 

 described by Giebel (from a fe- 

 male specimen) in the Phil. 

 Trans. Roy. Soc., Vol. 168, extra 

 Vol. This specimen also came 

 from Kerguelen Id. 



The distinguishing characters 

 of this genus are its Menopon- 

 like form, the small suborbicu- 

 lar head with slightly-produced 

 subrectangular temples, the dis- 

 tinctness of the meso- and meta-thoracic segments in a degree 

 unequalled elsewhere among the known Mallophaga unless it be 

 in Trinoton, the very small characteristically Philopterid antennae, 

 the sharp division of each eye into practically a pair of eyes, the 

 large size of the hind body in comparison with the head, the 

 heavy transverse blotches of the abdomen and the five pairs ot 

 abdominal spiracles instead of the usual six pairs. 



NESIOTINUS DEMEKSA sp. nov. (Fig. 3.) 



Ffinalt'. Body, length 5 mm., width 2.1 mm.; head, length .75 mm., 

 width 1.15 mm.; thorax, length 1.25 mm., width of prothorax .8 mm., 

 width of mesothorax 1.30 mm., width of widest segment, the first, 2.16 

 mm.; chestnut brown, with large blackish-brown blotches on thorax and 

 abdomen. 



FIG. 



3. Xesiotes deinersa, female. 

 (Length, 5 mm. ) 



