USED IN ENTOMOLOGY. 12l 



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 larvae. 



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 antennal 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 (Nort.), = 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 coxa. 



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 submarginal nervure: Hymenoptera (Nort.), = radius 5 (Comst.). 



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

 fibrous, 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 



