288 
Hermaphroditism etc . in Pediculus 
with normal structures. These parts are borne on a pedicle protruding from 
the abdomen, the pedicle being invisible in the illustration. The $ ventral 
plate forms an oval ring (v.pl.) with its left side flat, broadening and forming 
a cordiform plate. The centre of the ring is occupied by two conical 
prominences ( x ) each bearing a row of sensory hairs. The cordiform plate 
covers an irregularly shaped fleshy body, similar to a prolapsed vagina 
( vag.p .), but bearing at its external angles two small prominences with 
sensory hairs ( y ). The two conical prominences (x) appear to represent the 
terminal parts of the gonopods, and the two small prominences ( y) their 
Text-fig. 7. Pediculus humanus race corporis Specimen 8. Posterior end of abdomen, in 
ve'ntral aspect. (K. del.) 
basal portion. These two parts were probably separated and displaced by 
the malformation of the vagina. (Compare Text-figs. 14 c and 16 A in relation 
to the foregoing.) Dorsal and ventral muscles as in <$. 
SPECIMEN 8, f Text-fig. 7. 
Dorsal bands as in d, slightly chitinized. Legs I and III as in $ genitalia 
abnormal, with dilator (dil.) curved to the left, d ventral plate (v.pl. d) 
reduced to small irregular fragments on the left side. $ ventral plate irregular, 
slightly chitinized, except at its left posterior border which appears folded 
