

AN IXTRODi 



OGY. 



some on ships, in military camps, in prisons ami in the apartments 

 of uncleanly people who m-glect to change their clothes. Tlu 

 male attaches her eggs to fibres in the scums of undergarments. 

 from which the larvae hatch in about a week. Th; 

 ceedingly* prolific. The method ot \ ing these vermin com. 



monly employed in hospitals and poorhouse> is to rub mercurial 

 ointment in the seams of undergarments. 



Crab-louse, /V/////;/. i mmon name of thi- 



cies is suggested by the form of the body, which is nearly as broad 



as long. When highly magnified, the resemblance of this insect to 



a crab is quite striking; but to the unaided eye it appears more like 



scale of dandruff. These offensive vermin affect the pubic 



on and armpits of man. stretching themselves out flat, holding 

 tight to the cuticle, and inflicting most irritating punctures. They 

 can be destroyed by mercurial ointment. 



The true lice of cattle, of the horse, ass, swine, squirrel, etc., are 

 very closely allied to the head-louse and body-louse of man. They 

 have been placed, however, by systematists in a distinct genus. 



-natoplnus. The names of the more important species are as fol- 



i6.-//. eurytttrmttt, FH.. 117. //. rituli. 

 (From Law.) <m I^iw.) 



i ft //. suit. 



FlG. UQH. tili/f 



ivv.) 



lows: louse of cow, //. curystfrni'* (Fig, 1 16) ; a second 

 found on cattl. . .illy calves is //. ,-////// (Fig. 1171; lou* 



horse and aSS, //. tisini ( I r ig. 1151; loiis C of swine, //. .v///.v i l ; ig I i 

 louse of the dog, //.////// i 19); IOUM.- of rabbit. //. i-cntri- 



'S ; louse of monkeys. //. 



