700 
J. DAVIDSON. 
Fig. 36. — Nei’vous system and salivary glands, dissection from ventral 
siuiace. X 110. 
Fig. 37. — Transverse section tlirough tlie rectum ; hsematoxylin 
(Ehrlich) and eosin. X 710. 
Fig. 38. — Transverse section through small intestine ; hsematoxylin 
(Ehrlich) and eosin. X 710. 
Fig. 39. — Apteroi^s viviparous ? , dorsal, showing dorsal longitudinal 
muscles and dorsal tracheal system, x 68. 
Fig. 40. — Transverse section through stomach in region of oesopliageal 
valve ; hsematoxylin and eosin. X 710. 
Fig. 41. — Longitudinal section through salivary glands ; hsematoxylin 
and eosin. X 780. 
Fig. 42. — Transverse section through the vagina ; hsematoxylin and 
eosin. x 710. 
PLATE 42. 
Figs. 43-46. — Transverse sections through thehody; hsematoxylin and 
eosin. X 135. 
Fig. 43. — Transverse section through region of anterior salivary 
glands. 
Fig. 44. — Transverse section through region of posterior salivary 
glands, showing salivary duct passing beneath the ganglion. 
Fig. 45. — Transverse section through anterior segment of abdomen. 
Fig. 46. — Transverse section through region of cornicles. 
Fig. 47. — Section through the unicellular wax-glands ; hsematoxylin 
and eosin. X 1100. 
Fig. 48. — Longitudinal section through the stomach and oesophageal 
valve ; hsematoxylin and eosin. X 780. 
Fig. 49. — Section throi;gh one of the lateral eyes; stained hsema- 
toxylin and eosin. X 780. The hypodermis has shnink away from the 
chi tin. 
Appendix. 
Through the kindness of Mr. Clifford Dobell my attention 
has been directed to the recent works of Dr. Karel Side and 
Dr. Paul Buchner on the pseudovitellus in Hemiptera. I 
regret that owing to the fact that the manuscript had already 
