APPENDIX B 



GLOSSARY 



Alveolus (Lat. =a small hollow), a small hollow space in the interior of an 

 organ. 



Amoebocytes (Amoeba + Gr. KVTOS, cell), the larger corpuscles found in the 

 blood of Insects ; so called because they undergo amoeboid movements. 



Amphibiotic (Gr. dp.(f>i, on both sides; PIVTIKOS, fit to live), indicates, in the 

 Insecta, that the imago is terrestrial or aerial, but the larva aquatic. 



Ampulla (Lat. =a flask), a small flask-shaped growth or outgrowth. 



Anastomosis (Gr. =an outlet), a vessel forming an outlet or connection 

 between two larger vessels. Often used for a network of small vessels con- 

 necting two larger ones. 



Apodeme (Gr. dirobf/jio), to build out), a ridge or ingrowth of the cuticle, 

 serving for the attachment of muscles. 



Asthenogenesis (Gr. da-devrjs, weak; ytveo-is, begetting), the development 

 of a successful line of descent by the adoption of weakness in structure 

 (e.g. the Agrionidae amongst Dragonflies). Contrasted with menogenesis 

 (Gr. pfvos, strong). 



Autotomy (Gr. avros, self; re'/ivo), to cut), self-mutilation; the power to 

 cast off an appendage at will. 



Bilateral symmetry, the possession of a single longitudinal axis or plane of 

 symmetry, separating exactly similar right and left halves. 



Bromeliad, any plant belonging to the Pine-apple family (Bromeliaceae). 



Caecum (Lat. = blind), a blind tube, i.e. one closed at its free end. 



Caenogenetic (Gr. KOIVOS, new; yewda), to beget), a, comparative term used 

 in contrast with "archaic," and signifying, phylogenetically, a comparatively 

 recent line of development, as contrasted with an older (archaic) line. It 

 may be used either of races of animals, or of types of organs. 



Callus (Lat. =hard skin), a hard lump or swelling of the cuticle (e.g. at the 

 wing-base). 



Campodeiform (from Campodea, a wingless insect of the Order Thysanura), 

 the term applied to larvae which are active and provided with well-developed 

 limbs, as opposed to eruci/orm or grub-like larvae. 



Capillary (Lat. capillus, a hair), a fine hair-like tube (tracheal system). 



Carina (Lat. =a keel), an external ridge of the cuticle. 

 Caudal (Lat. caudalis, of the tail), used of organs situated at the posterior 

 end of the abdomen. 



