USED IN ENTOMOLOGY. I3i 



Scutellar space: in Mantids, an area between antennae and clypeus. 

 Scutellate: dish- or platter-shaped. 



Scutellum: the third dorsal sclerite of the meso- and meta-thorax : in Cole- 

 optera, the triangular piece between the elytra at base and universally re- 

 ferred to as the scutellum : in Heteroptera, a similar sclerite between base 

 of hemelytra : in Diptera, a sub-hemispherical body posteriorly cut off by 

 an impressed line from the dorsum of the meso-thorax. 

 Scutes: the chitinous shields or plates on the segments of larvas. 

 Scutiform: =: scutate ; q. v. 



Scutum: the second dorsal sclerite of the meso- and meta-thorax. 

 Seal-brown: a brilliant deep red-brown: almost like, but darker than cas- 



taneous [between dragon's blood and Indian red]. 

 Sebaceous: fatty or oily; applied to glands secreting such substances. 

 Sebific: oily; sebaceous; somewhat sticky. 

 Sebific duct: carries the excretions of the colleterial gland to the bursa 



copulatrix. 

 Second antenna! segment: the third or tritocerebral segment of head. 

 Secondaries: the hind wings; always attached to the meta-thorax. 

 Secondary sexual characters: features possessed by one sex but not the other, 

 other than the differences of the reproductive organs themselves ; e. g., 

 color, size, shape, etc. 

 Second clypeus: see anteclypeus. 



Second costal cell: in Hymenoptera (Pack.) ; is the stigma. 

 Second inner apical: in Hymenoptera CNort.), =: media 3 (Comst.), to the 



junction of medial cross-vein ; also called sub-marginal nervure in part. 

 Second lateral thoracic suture: in Odonata, extends from base of secondaries 



to the rear of the third co.xa. 

 Second longitudinal vein: in Diptera (Will.), = radius 2 + 3 (Comst.). 

 Second maxilla: the labium; q. v. 



Second maxillary segment: the seventh or labial segment of head. 

 Second median area: see median area; areola. 



Second submatginal nervure: Hymenoptera (Xort.), := radius 5 (Comst.). 

 Secretion: any matter produced by a gland: in Coccidce, specifically, the waxy, 



fil)rc)us, cottony or silky substances forming the " scales." 

 Secretionary supplement: that part of a Diaspid scale extending beyond or 



around the pellicles. 

 Secretory: concerned in the process of secretion. 

 Sectores coronis: the tearing or cutting structures used by the Lepidoptera in 



working out of a cocoon. 

 Sectors: longitudinal veins. in Odonata, which strike the principal veins at an 

 angle, and usually reach the apex or hind margin : they are radial, subnodal, 

 principal, nodal, median, short, and upper and lower of triangle : all of which 

 see. 

 Secund: pointing one way: unilateral. 



Securiform: triangular-compressed; like the blade of a hatchet. 

 Sedentary: not active: settled or remaining in one place. 

 Segment: a ring or division bounded by incisions or sutures: a segment of an 



