Text-fig. 11. Pediculus humanus 
race corporis $>. Specimen 26, 
294 Hermaphroditism etc. in Pediculus 
SPECIMEN 25, £. Text-fig. 10 b. 
Dorsal bands much as in Specimen 19. Legs: pair I as in <$, pair III as 
in $. $ ventral plate with each antero-lateral extension united to plate by 
a narrow neck. Dorsal abdominal muscles as in <$, ventral muscles macerated. 
SPECIMEN 26, £. Text-fig. 11 and PL XVII, 
fig. 8. 
Dorsal bands as in $ ventral plate, etc., 
as in Specimen 25, leg III bearing but a slight 
femoral spur. Ventral abdominal muscles as 
in ?. This specimen shows a small chitinous 
showing chitinous invagination gack containin „ sensory hairs; the sack, situated 
with sensory hairs in the last . . 
abdominal ‘segment. See PI. on the left slde 111 the last abdominal seg- 
XVII, fig. 8 for details of this ment, is only visible by transparency from the 
structure. (K. & N. del.) dorsal side. 
SPECIMEN 27, Not illustrated. 
Similar to Specimen 26, but pale. Contains three eggs, one with operculum 
facing vulva, one transverse. 
SPECIMEN 28, Text-fig. 10 c. 
Similar to Specimen 19, but the ventral plate of peculiar form, with left 
antero-lateral extension united to it, the right extension forming a separate 
plate. 
SPECIMEN 29, Text-fig. 10 f. 
Dorsal bands as in normal <$. Legs: pair I as in d, pair III as in $. The 
whole posterior part of abdomen asymmetric. Ventral plate with left antero¬ 
lateral extension moderate, the right one forming a separate plate. Left 
gonopod normal, right gonopod very much reduced although bordered by 
sensory hairs. Posterior abdominal lobes abnormal, the left being short and 
indented. Abdominal muscles: dorsally as in ventrally as in $. 
SPECIMEN 30, Text-fig. 10 d. 
Resembling Specimen 19, but with ventral plate having its anterior 
border ragged; the antero-lateral extensions form.two separate plates. Dorsal 
abdominal muscles as in <£. 
SPECIMEN 31, £. Text-fig. 12. 
Dorsal bands fragmented. Legs: pair I lost, pair III as in ?. Ventral 
plate more regular than in Specimen 30, the antero-lateral extensions similarly 
separated. Gonopods normal. Posterior abdominal lobes truncated, slightly 
irregular. Abdominal muscles: dorsally as in <?, ventrally as in Internal 
