Smithsonian miscellaneous collections . is par-ticularly characterized by the straight course and considerable depthof the pleural furrows and grooves and its transverse anterior margin. Upper Cambrian, Franconia; (loc. 79) Hudson, Wisconsin. Holotype.—^ no. 35228. NO. 22 CAMBRIAN TRILOBITES, 3D CONTRIBUTION RESSER 29 ZACANTHOIDES Walcott, 1888 Zacanthoides weedi, n. sp. Zacantlwides sp. Walcott, U. S. Geol. Surv. Mon. 32, p. 465, pi. 65, fig. 3,1899. This small form is characterized by its reduced rim and furrows(drawn too heavily in the above cited figure). It is possible that when
Smithsonian miscellaneous collections . is par-ticularly characterized by the straight course and considerable depthof the pleural furrows and grooves and its transverse anterior margin. Upper Cambrian, Franconia; (loc. 79) Hudson, Wisconsin. Holotype.—^ no. 35228. NO. 22 CAMBRIAN TRILOBITES, 3D CONTRIBUTION RESSER 29 ZACANTHOIDES Walcott, 1888 Zacanthoides weedi, n. sp. Zacantlwides sp. Walcott, U. S. Geol. Surv. Mon. 32, p. 465, pi. 65, fig. 3,1899. This small form is characterized by its reduced rim and furrows(drawn too heavily in the above cited figure). It is possible that whenthe pygidium is found it will prove to belong to Prosacanthoides. Itis associated with Kootenia. Middle Cambrian, Meagher; (loc. I5id) Crowfoot Ridge, Yellow-stone National Park, Wyoming. Holotype.—VS.^M. no. 94345. SMITHSONIAN MISCELLANEOUS COLLECTIONS VOLUME 95. NUMBER 23 IRoebliiio jfunb ON THE CORRECTIONS TO BE APPLIED TOSILVER-DISK PYRHELIOMETRY BYC. G. ABBOT Secretary, Smithsonian InstitutiM<jf\\SONIAN j/VS77l MAR 10 1937. T-tal. /(^ (Publication 3409) CITY OF WASHINGTON PUBLISHED BY THE SMITHSONIAN INSTITUTION MARCH 10, 1937 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOLUME 95. NUMBER 23 IRoeblino jFunb ON THE CORRECTIONS TO BE APPLIED TOSILVER-DISK PYRHELIOMETRY BYC. G. ABBOT Secretary, Smithsonian Instituti
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