KUT. LEP.] 



BRACHIOPODA. 



347 



spiral, calcified lamella. Type K. leon- 

 hardi. 



americana, Swallow, 1863, Trans. St. Louis 

 Acad. Sci., vol. 2, p. 94, Kaskaskia Gr. 

 KUTORGINA, Billings, 1861, Pal. Foss., vol. 1, 

 p. 8. [Ety. proper name.] Shell more 

 or less subquadrate in out- 

 line ; hinge-line straight ; 

 sides slightly convex, an- 

 terior angles rounded, 

 front slightly convex ; sur- 

 face with concentric ridges 

 terminating on the car- 

 dinal edges, and the course 

 conforming to the margin 

 of the shell, and sometimes 

 with lines radiating from the beak to 

 the margin ; ventral valve tumid, most 

 convex about the middle, beak slightly 

 depressed; cardinal edges straight or 

 slightly concave and diverging from the 

 beak at an obtuse angle ; dorsal valve 

 less convex, most elevated at the beak, 

 and along the middle there is a shallow 

 concavity extending to the front mar- 

 gin. Type K. cingulata. 

 cingulata, Billings, 1861, Pal. Foss., vol. 1, 



FIG. 568. Ku- 

 torgina pan- 

 nula. En- 

 larged o 

 diam. 



p. 8, Up. Taconic. 



lorica, Billings, 1861, (Obolus labra- 

 doricus,) Pal. Foss., vol. 1, p. 6, Up. 

 Taconic. 



latourensis, Matthew, 1885, Trans. Roy. 

 Soc. Can., p. 42, St. John Gr. 



minutissima, Hall & Whitfield, 1877, U.S. 

 Geo. Expl. 40th parallel, syn. for K. 

 sculptilis. 



pannula,White, 1874,(Trematispannulus,) 

 Rep. Invert. Foss., p. 6, and Geo. Sur. W. 

 100th Mer., vol. 4, p. 36, Up. Taconic. 



prospectensis, Walcott, 1885, Monogr. 

 U. S. Geo. Sur. Terr., vol. 8, p. 19, Up. 

 Taconic. 



pterineoides, Matthew, 1885, Trans. Roy. 

 Soc. Can., p. 43, St. John Gr. 



sculptilis, Meek, 1873, (Iphideasculptilis,) 

 6th Ann. Rep. U. S. Geo. Sur. Terr., p. 

 479, and Monogr. U. S. Geo. Sur. Terr., 

 vol. 8, p. 20, Potsdam Gr. 



stissingensis, Dwight, 1889, Am. Jour. 

 Sci. and Arts, 3d ser., vol. 38, p. 145, 

 Up. Taeonic. 



whitfieldi, Walcott, 1885, Monogr. U. S. 

 Geo. Sur. Terr., vol. 8, p. 18, Up. Ta- 

 conic. 



LEIORHYNCHUS, Hall, 1860, 13th Rep. N. Y. 

 St. Mus. Nat. Hist., p. 75. [Ety. leios, 

 smooth ; rhynchos, beak.] Ovate, cir- 

 cular or transverse, valves unequally 

 convex; mesial fold and sinus, which 

 are plicated ; articulating by teeth and 

 sockets; apex of ventral valve perfo- 

 rate, two diverging lamellae extend 

 into and join the sides or bottom of the 

 rostral cavity ; muscular impressions oc- 

 cupy a narrow triangular cavity below 

 the dental lamellae ; median septum in 

 the dorsal valve extending half the 

 length of the shell ; hinge plates, nar- 

 row, strong processes, embraced by the 



curving teeth of the opposite valve ; sub- 

 stance fibrous. Type L. quadricostatum. 



dubium, Hall, 1867, Pal. N. Y., vol. 4, 

 p. 364, Marcellus Shale. 



globuliforme, Vanuxem, 1842, (Atrypa 

 globuliformis,) Geo. 3d Dist. N. Y., p. 

 182, and Pal. N. Y., vol. 4, p. 364, Che- 

 mung Gr. 



hecate, Clarke, 1885, Bull. U. S. Geo. Sur. 

 No. 16, p. 31, Genesee Shales. 



huronense, Nicholson, 1874, Geo. Mag. 

 Lond., n. s., vol. 1, p. 120, Ham. Gr. 



iris, Hall, 1867, Pal. N. Y., vol. 4, p. 360, 

 Chemung Gr. 



kelloggi, Hall, 1867, Pal. N. Y., vol. 4, p. 



361, Chemung Gr. 



laura, Billings, May, 1860, (Rhynchonella 



laura,) Can. Jour.,vol. 5, p. 273, Ham. Gr. 

 limitare, Vanuxem, 1842, 



(Orthis limitaris,) Geo. 



3d Dist. N. Y., p. 146, 



and Pal. N. Y., vol. 4, p. 



356, (Atrypa limitaris,) 

 4th Dist. N. Y., Mar- 

 cellus Shale. 



mesacostale, Hall, 1843, 



(Atrypa mesacostalis,) FIG. 569,-Leio- 

 Geo. 4th Dist. N. Y., pi ^U-icosta 3 

 64, and Pal. N. Y., vol. S 

 4, p. 362, Chemung Gr. 



multicosta, Hall, 1860, 13th Rep. N. Y. 

 St. Mus. Nat. Hist., p. 85, and Pal. N. Y., 

 vol. 4, p. 358, Ham. Gr. 



mysia, Hall, 1867, Pal. N. Y.. vol. 4. p. 



357, Marcelkis Shale. 



nevadense, Walcott, 1885, Monogr. U. S. 



Geo. Sur., vol. 8, p. 157, Devonian, 

 newberryi, Hall & Whitfield, 1873, 23d 



Rep. N. Y. St. Mus. Nat. Hist,, p. 240, 



Wayerly Gr. 

 quadricostatum, Vanuxem, 1842, (Orthis 



qnadricostata,) Geo. 3d Dist. N. Y., p. 



168, and Pal. N. Y., vol. 4, p. 357. Gen- 

 esee Slate, 

 sesquiplicatum, Winchell,1866, Rep. Low. 



Penin. Mich., p. 95, Ham. Gr. 

 sinuatum, Hall, 1867, Pal. N. Y., vol. 4, p. 



362, Chemung Gr. 



LEPTJSNA, Dalman, 1827, Kongl. Vet. Acad. 

 Handl.,p. 93. [Ety. leptos, thin.] Shell 

 thin, semicircular, transversely elon- 

 gated, smooth or finely striated ; hinge- 

 line straight, ventral valve convex, fis- 

 sure partly covered by a deltidium ; 

 beak inconspicuous, sometimes per- 

 forated ; cardinal area narrow ; muscular 

 scars small, not marginal ; adductor 

 scars close to a mesial ridge, while the 

 cardinal scars are on either side ; vas- 

 cular impressions radiating; dorsal 

 valve concave ; socket ridges large, car- 

 dinal process small, multifid, connate 

 with their bases ; adductor impressions 

 large, produced, elongated, and bor- 

 dered by ridges; area on both valves. 

 Type L. trans versalis. 



alternata, see Strophoraena alternata. 



alternistriata, see Strophomena alterni- 

 striata. 



