12 CALIFORNIA STATE COMMISSION OP HORTICULTURE. 



Circumgenltal Glands. Small circular glands in distinct groups around the genital 

 orifice. 



Coxa. The basal joint of the leg. 



Depressed. Flattened from above downward. 



Digitules. A.ppendages frequently present on the feet of Coccidee. 



Dorsal. Relating to the back or upper parts of the body. 



Dorsal Scale. The part of the covering scale that lies above the scale proper and the 

 part seen when viewing a scale externally ; between this and the ventral scale is 

 found the female. 



Dorsum. The back or upper part of the body. 



Exuviae. The discarded skins shed at the periodical molts. 



Femur. The thigh or upper part of the leg. 



Filiform. Thread-like. 



Honey-dew. A sweet, sticky substance exuded by the Coccidse and other insects. 



Incised. With marginal slits or notches. 



Laterad. Toward the side. 



Larva. The immature insect. 



Lobe. Any prominent rounded process. (See illustrated plate.) 

 Mesad. Situated toward the middle. 

 Mesal. Relating to the middle. 



Metamorphosis. The transformations of an insect during its development. 

 Ocelli. The simple or supplementary eyes. 

 Oviparous. Producing eggs. 



Ovoviviparous. Producing eggs which are hatched within the body of the parent. 

 Parasitized. Containing parasites. 

 Pellicles. The " exuviaj " or cast larval skins. 

 Plate. Any broad, flattened piece. 



Processes. Any prominent portions of the body not otherwise definable. 

 Pupa. The chrysalis or resting stage of an insect. 



Pygidium. The compound terminal segment of the body. (See illustrated plate.) 

 Rostral Setae. The four long, hair-like processes which together form the sucking tube. 

 Secretion. Matter produced by the various glands of the body, more particularly the 

 cottony, waxy, silken substances of which the coverings of many scale bugs are 

 composed. 

 Segments. The transverse divisions of the body. 

 Serrated. With margin notched like a saw. 

 Seta. A stout hair or bristle. 

 Spiracles. The respiratory organs. 

 Tarsus. The terminal joints of the legs. 

 Thorax. The second or main division of the body ; that part which bears the legs and 



wings when present. 

 Tibia. The single joint of the leg immediately succeeding the "femur" and preceding 



the "tarsus." 

 Truncate. With end having appearance of being abruptly cut off. 

 Ventral. Relating to the under surface of the body. 

 Ventral Scale. The under part of the covering scale, between the insect and the plant. 



