GLOSSARY. 343 



Salient. Projecting ; jutting out. 



Sanguineous. Blood-red. 



Sectors. Longitudinal nerves which strike the principal nerves at an 

 angle, and usually reach the apex or hind margin of the wing. 



Semihyaline. Half transparent. 



Semilunar. Half-inoon shaped. 



Sericeous. Having the surface with a silk-like gloss, usually from 

 minute, dense hairs. 



Serrated. Having prominences like saw-teeth. 



Seta. A bristle-like appendage, such as at the tail of Ephemera, &c. 



Setaceous. Bristle-like ; resembling a bristle. 



Setae. Plural of Seta. 



Setiform. Bristle-shaped. 



Sinuated. Scooped out, or broadly shallowly excavated on a margin. 



Spurs. Stiff bristle-like appendages upon the tilice. In the Phryganeae 

 they are either at the tip or in the middle of the tibire ; their number 

 affords an important character for classification, and is expressed 

 by three figures, meaning the three successive pairs of feet ; thus 

 2, 4, 4, means two terminal spurs on the fore tibise, two terminal 

 and two middle ones on the middle tibite, and two terminal and 

 two middle ones on the hind tibiae. 



Stramineous. Straw-colored ; yellow. 



Stria. A line, usually depressed, sometimes composed of punctures. 



Striae. Plural of stria. 



Striated. Charged with striae. 



Subaduncate. Somewhat hooked or curved. 



Subcinereous. Somewhat gray. 



Subcosta. The vein just behind the costa. 



Subhyaline. Almost transparent, or water-colored. 



Subimago. A state of Ephemera, &c., wherein the wings, &c., are covered 

 with a membrane, which is cast off when it becomes an Imago. 



Submarginal. Just behind the margin. 



Submedian nerve. The longitudinal large nerve j ust behind the median. 



Subnude. Almost without clothing ; without hairs, &c. 



Subocular. Beneath the eyes. 



Subrect. Almost straight. 



Subscabrous. Indistinctly rough. 



Subulate. Shaped like an awl. 



Sulcus. A groove-like excavation. 



Sulphureous. Of a color resembling sulphur. 



Suture. A seam, or impressed line; usually between segments. 



Tarsus (plural Tarsi). The terminal, almost always jointed divisions of 

 the foot of an insect, immediately after the tibia. 



Teneral. A state of the imago after exclusion, in which it has not fully 

 completed its coloring, clothing, &c. 



Testaceo-hyaline. Transparent, with a slight tinge of dull reddish. 



Testaceous. Dull brick-color. 



