AMERICAN ENTOMOLOGY. loo 



Spicula, the instrument with which the female lays her , __- 



See vagina. 

 Spinous, ai'ined with acute processes or spines. 

 Spinous-radiate, beset with spines in a circle, either concatcnaU , 



united at their bases, or setaceous, like bristles. 

 Spinulse, spinous processes at the base of the tibia, in Hymen- 



opterous insects, including velum; they are the "spines " m 



*' spurs " of Degeer, and heels of Leach. 

 Spiracula, Spiracle, one of the lateral orifices of the trunk and 



abdomen, through which insects respire; the stigmata. 

 Spiral, revolving obliquely like a corkscrew; or rolled up like a 



watch-spring. 

 .Spurious, tbis word is applied to the anterior feet of some of 



the Lepidoptera, in which these members are destitute of nails. 



and not suitable for walking. 

 Spurs, the spinulse. 

 Squama, or scale, a small scale above the halteres in the Dip- 



tera ; it is composed of two pieces united at their edges, as in 



bivalve shells. 

 Squamula, a very small corneous, concavo-convex scale, cover- 

 ing the base of the superior wings in some insects. 

 Squamous, scaly; covered with scales. 

 Squarrous, scurfy ; consisting of rough scales spreading every 



way, or divided into pieces, standing upright and not parallel 



with the surface. 

 Stellate, star-formed , with four or five radiating lines. Sec 



radiated. 

 Stemmata, two or three simple, convex, crystalline bodies on 



the vertex of many insects, resembling the eyes of spiders, &c, 



and probably performing the same functions. 

 Sternum, a carina or corneous process immersed in, or prominent 



on the pectus, and which extends longitudinally between the 



anterior feet, often elongated before or behind, or concealed 



by the base of the anterior feet. 

 Stetliidium, the trunk; all that part of the body included be- 

 tween the head and abdomen. See thorax. 

 Stigma, an opake spot on the costal margin of the anterior 



wings, of some Neuroptera, &c; it is the "anastomosis" 



of Kirby, and the "punctum marginale" of Linne. See 

 nrpus. 



