138 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



Genus Phthirus Leach 



Phthirus Leach, Edinburgh Encycl., Vol. 9, p. 77 (1815) ; 

 Zool. Misc., Vol. 3, p. 64 (1817) ; Enderlein, Zool. Anz., Vol. 

 28, pp. 136, 138 (1904) ; Dalla Torre, Gen. Ins., Anopl., p. 9 

 (1908). 



Phthirius Burmeister, Handbuch der Entomologie, Vol. 2, 

 p. 1 (1835); Denny, Mon. Anopl., pp. 8-9 (1842); Giebel, 

 Ins. Epizoa, pp. 23-27; pi. 1, f. 8 (1874); Piaget, Les Ped., 

 pp. 628-630; pi. 51, f. 5 (1880). 



Anterior legs much smaller and with much slenderer claws 

 than the others. Abdomen short and broad, the fifth to eighth 

 segments with conical lateral processes. Spiracles large, those 

 of the first three abdominal segments crowded close together. 



1 — Phthinis pubis Linnaeus. From man. 



1758. Pcdiciihis pubis Linnaeus, Syst. Naturae, ed. 10, 

 p. 611. 



1817. Phthirus inguinalis Leach, Edinburgh Encycl., 

 Vol. 9, p. 77. 



1818. Pediculus tabescentium Alt. De Phthiriasi. 

 1842. Phthirius inguinalis Denny, Mon. Anopl., pp. 



9-11; pi. 26, f. 3. 

 1874. Phthirius inguinalis Giebel, Ins. Epizoa, pp. 23- 



27; pi. 1, f. 8. 

 1880. Phthirius inguinalis Piaget, Les Ped., pp. 628' 



630; pi. 51, f. 5. 

 1904. Phthirus pubis Enderlein, Zool. Anz., Vol. 28, 



p. 136. 

 1908. Phthirus pubis Dalla Torre, Gen. Ins., Anopl., 



p. 9. 



Subfamily PedicinincB 



Enderlein, Zool. Anz., Vol. 28, pp. 136, 138 (1904) ; Dalla 

 Torre, Gen. Ins., Anopl., p. 9 (1908); Fahrenholz, Jahresb. 

 d. Niedersach. Zool. Ver., pp. 28-29 (1912). 



Antennae three-segmented or obscurel}'^ five-segmented. 

 Head more or less elongated. Abdomen with a single row of 

 many very small spines on each segment. Pleural plates pres- 

 ent on certain abdominal segments. 



