l8 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



Key to Families. 



1. Occurs on marine animals only ECHINOPTHIRIDAE, p. 2Z 



Occurs on land mammals only 2 



2. Head much elongated ; occurs on the elephant 



HAEMATOMYZIDAE, p. i8 



Head not exceptionally elongated 3 



3. Eyes present and conspicuous PEDICULIDAE, p. 18 



Eyes rudimentary or wanting HAEMATOPINIDAE, p. 19 



Family HAEMATOMYZIDAE. 



This family includes but one genus and one known species 

 which occurs on the elephant. 



Haematomyzus elephantis Piaget. prohoscideus Piaget. Ele- 

 phant louse. 



Tijds. V. Ent. iv, Ser. 2, 254, 1869. 



This species has a remarkably elongate head with presumably 

 especially elongate sucking tube for the penetration of the thick 

 hide of its host the elephant. While no records have been made of 

 its occurrence in Connecticut the presence of its host as an occa- 

 sional visitor at least should make its collection possible. 



Family PEDICULIDAE. 



This family includes species which have conspicuous eyes. 

 They occur on man, the apes and monkeys, and are not known 

 from other animals. 



Key to Subfamilies and Genera. 



1. Antennae five segmented Pediculinae 2 



Antennae three segmented Pedicinae 3 



2. All legs of equal size Pediculus, p. 18 



Front legs smaller than middle and hind Phthirius, p. 19 



3. All legs of equal size Pedicinus, p. 19 



Fore legs smaller than middle and hind [Phthirpedicinus] 



Pediculus Linnaeus. 

 These are elongate in form with the legs of nearly equal size. 



P. capitis (DeGeer). Head louse of man. (PL i, i.) 



Mem. Hist. Ins., 7, 67, 1778. 



This is the common head louse, whitish in color, which clings 

 to the hair of the head and fastens its eggs or nits on the hair, 

 most commonly back of the ears. Still abundant in places in spite 

 of the efforts of sanitarians. 



From Steamer Richard Peck, New Haven, i Oct., 1910 (B. H. W.), 

 New Haven, 15 Aug., 191 1 (A. B. C.) ; Storrs, 1914 (J- A. Manter). 



P. corporis (DeGeer). Cootie, or body louse of man. (PI. i, 2.) 



Mem. Hist. Ins., 7, 67, 1778. 



