USED IN ENTOMOLOGY. 119 



Sagittal plane: the longitudinal vertical plane which divides an animal into 



right and left halves. 



Sagittate: shaped like an arrow head: elongate triangular. 

 Salient: projecting; jutting out. 

 Saliva: the secretion of the salivary glands that moistens and begins the 



digestion of the food. 

 Salivary glands: glands that open into the mouth or at the beginning of the 



alimentary canal, secreting a digestive, irritant or viscid material. 

 Salivary receptacle: a small cavity above the opening of the salivary duct, 



between labium and hypopharynx. 

 Salivary pump: applied to the chitinous, cup-like structure at the base of the 



labial stylets of piercing Diptcra; e. g., mosquitoes. 

 Saltatoria: that series of Orthoptera in which the posterior legs are formed 



for jumping. 

 Saltatorial or Saltatory: formed for jumping or leaping: a posterior femur 



when much enlarged and dilated. 

 Saltatory appendage: in Collembola = f urcula ; q. v. 

 Sanguineous -eus: red like arterial blood [crimson lake]. 

 Sanguinolent: bloody; in color or appearance. 

 Sapphyrinus: sapphire blue [French blue]. 



Sarcolemma: the elastic covering of the striated muscular fibres. 

 Sarothrum: the basal joint of posterior tarsus in pollen gatherers : see meta- 

 tarsus. 



Saturate : deeply or strongly marked ; in a color, means intense. 

 Saxicolous: species that frequent rocky or stony areas. 

 Saws: the ovipositors of the saw flies or Tenthredinidce. 

 Scaber: uneven, rough. 



Scabriculous: regularly and finely wrinkled. 

 Scabrose -ous: rough like a file, with small raised points. 

 Scalariform: ladder-like; applied to venation when the veinlets between two 



longitudinal veins are regularly arranged like the rungs of a ladder. 

 Scale: a general term to distinguish Coccida: specifically the puparium of a 



Diaspid, comprising exuvire and excreted matter : the waxy covering of a 



male Lecaniid : in Diptera = alula ; q. v. 

 Scales: broad flattened hairs, forming the wing vestiture of Lepidoptera, 



and present in various other insects. 



Scalloped: an edge marked by segments of circles without intervening angles. 

 Scalpellus: a lancet-like piercing structure, as in some Diptcra. 

 Scalpriform: chisel-shaped. 



Scansorial: said of feet, when formed for climbing on hair. 

 Scape: the long basal joint of a geniculate antenna in Colcoptcra; usually 



applied to the three basal joints, as in Hymenoptera. 

 Scaphiform: boat-shaped. 

 Scaphium: a ventral process of the 10th abdominal segment in <$ Lepidoptera 



below the uncus. 

 Scapula: in Lepidoptera the shoulder tippets, patagia or axillae; q. v. : in 



Hymenoptera, the side pieces of the mesonotum; also, a trochanter of the 



