...Incision: any cut into a margin or through a surface:the marginal slits or notches in Coccidae... 
John. B. Smith 「Explanation of Terms Used in Entomology」
...They do noteven attempt to slide their ovipositor through the slits of the folds...
J. H. Fabre 「The Wonders of Instinct」
...Vomerine teeth 4-4, situated on rounded vomerineridges between rather small ovoid inner nares; vocal slits present,situated along posterior edge of each ramus...
William E. Duellman 「A Review of the Frogs of the Hyla bistincta Group」
...An old pair of heavy-soled shoeswith spikes in their bottoms, and small slits cut in the sides to letthe water in and out, and a pair of heavy woolen socks comprise mywading footwear...
Charles Bradford 「The Determined Angler and the Brook Trout」
...Theface of the sun is indicated by triangles on the forehead, two slits foreyes, and a double triangle for the mouth...
Jesse Walter Fewkes 「Archeological Expedition to Arizona in 1895」
...The majority of them had two fins just behind the gill slits, typicalfish tails and blunt, sloping heads...
Various 「Astounding Stories of Super-Science September 1930」
...See—in the throatare gill slits...
Various 「Astounding Stories of Super-Science September 1930」
...Only the flesh about his eyes gathered into creasesto squeeze the eyes to malignant slits...
Charles Willard Diffin 「Brood of the Dark Moon」
...Throughseveral narrow ventilating slits highin the cavern wall they heard thehum of machinery...
Hal K. Wells 「The Cavern of the Shining Ones」
...By climbing on Garrigan's broadshoulders Foster found that he hada clear view through one of thenarrow ventilating slits...
Hal K. Wells 「The Cavern of the Shining Ones」
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