BREED: METAMORPHOSIS OF THE MUSCLES OF A BEETLE. 381 
fix. pre. p-l. mv fur. . 
fix. trehn. mt’the. . 
hy’drm. . 
Ey as 
lew’cyt. 
Ll. ms’ fur. 
Lo mnt'ni.: . 
1, mt’thx. a. 
l. mt’thex. p. 
TORI wc Pat a he 
l. pre. uf. ms’phg. . 
ms’fur. 
ms’ fur. d. 
ms’phg. . 
mt’ fur. 
mit’nt, .. 
mt’phg. . 
mu. orc.’ . 
mu. lg. 
pre. ms’ phq. if. 
pre. mt’phg. if. 
na. al. me thx... 
nigext.al. . 
rtr.ms'thx.if. . 
rtr. prothx. if. . 
sar’lem. . 
sar’pl. 
sty. ab. 1 
stg. mv’thx. . 
sut. a. 
Sut. p. 
rats 
a eae 
a, B, y, 5, €, etc. 
i 
Flexor processus postero-lateralis metafurcae. 
Flexor trochanteris metathoracis, 
Hypodermis. 
Intestine. 
Leucocyte. 
Musculus lateralis mesofurcae. 
Musculus lateralis metanoti. 
Musculus lateralis metathoracis anterior. 
Musculus lateralis metathoracis posterior. 
Cross section of ridge on elytron. 
Musculus lateralis processus inferioris mesophragmatis. 
Mesofurca. 
Musculus mesofurcae dorsalis. 
Mesophragma. 
Metafurca. 
Musculus metanoti. 
Metaphragma. 
Circular layer of intestinal muscles. 
Longitudinal layer of intestinal muscles. 
Cross section of the main branch of the sympathetic nervous 
system. 
Nucleus of larval muscle fibre before division. 
Nucleus of muscle fibre undergoing amitotic division. 
Pairs of nuclei resulting from amitotic division. 
Elongated nucleus common in metamorphosing muscles. 
Nucleus of degenerating muscle undergoing chromatolysis. 
Nucleus of leucocyte. 
Cross section of fold on episternum. 
Processes of tracheal cells detached from cell body by the 
plane of the section. 
Processus mesophragmatis inferior. 
Processus metaphragmatis inferior. 
Relaxator alae metathoracis. 
Relaxator extensoris alae. 
Retractor mesothoracis inferior. 
Retractor prothoracis inferior. 
Sarcolemma. 
Sarcoplasm. 
Stigma of the first abdominal somite. 
Metathoracic stigma. 
Suture of the larval metathorax, probably equivalent to the 
suture between prescutum and scutum. 
Suture probably equivalent to the suture between the scutum 
and scutellum. 
Trachea. 
Intracellular tracheole. 
Larval muscles which degenerate during pupal life. 
Anterior lateral horn of the metafurca. 
