Page:The crayfish - an introduction to the study of zoology (IA crayfishintroduc00huxl 2).pdf/18

 Xll

LIST OF WOODCUTS. PAGE

Fig. 19.

Astacus fluviatills.

Muscular tissue

•

y y

20.

yy

yy

Muscles of chela.

yy

21.

y y

y y

Articulation mites

of

•

93

so-

abdominal

....

a

•

yy

22.

y y

yy

Muscular system

yy

23.

y y

y y

Nerve fibres

yy

24.

yy

yy

Nerve ganglia

yy

25.

y y

yy

Nervous system

yy

26.

yy

y y

Olfactory

yy

27.

yy

y y

Auditory sac ....

y y

28.

y y

yy

Structure of eye

yy

29.

yy

y y

Diagram of eye

yy

30.

yy

yy

Female reproductive organs

y y

31.

yy

y y

Male reproductive organs

y y

32.

y y

yy

Structure of ovary.

yy

33.

yy

y y

Structure of testis

yy

34.

yy

y y

Spermatozoa

yy

35.

y y

yy

The last thoracic sternum in THE

. •

•

a

and auditory

•

104

organs

114 117

a

•

129

.

.

130 •

•

134

•

section

136

yy

Transverse

yy

37.

yy

y y

Abdominal appendages

yy

38.

y y

yy

Connection

of

abdomen

yy

yy

.

....

Cephalothoracic

151

•

•

41.

y y

yy

yy

42.

yy

yy

The rostrum

43.

yy

yy

y

44.

yy

yy

157

.

159

....

Longitudinal section of cephaloTHORAX ....

y

156

A Segment of the endophragmal system

y y

153

so-

Ophthalmic and antennulary MITES.

yy

141

sterna and EN-

DOPHRAGMAL SYSTEM 40.

.

142

between thorax AND

abdomen

yy

131 132

yy

yy

119 123

36.

yy

102 103

yy

39.

97 100

MALE AND FEMALE

yy

91

The third maxillipede.

•

•

162

•

164