III.-PUBLISHED WRITINGS OF CHARLES DOOLITTLE WALCOTT. 



Walcott, C. D. Description of a New Species of Trilobite. <]Cinciiinati Quar- 

 terly Journal of Science, vol. ii, pp. 273-274, figs. 18 a, 5. July. Cincinnati, 1875. 



Page. 



Spherocoryphe, Angelin. 



8. robustus.n. B., Walcott, 1875, p. 274, figs. 18 a, b 273-274 



2. 



WAtcOTT, C. D. New Species of Trilobite from the Trenton Limestone at Trenton 

 Falls, N. Y. <[Cincinnati Quarterly Journal of Science, vol. ii, pp. 347-349, fig. 



27. October. Cincinnati, 1875. 



Page. 

 Semopleurides, Portlock. 

 B. striatulus, n. s., Walcott, 1875, fig. 27 a, b, and A 347-349 



3. 



Walcott, C. D. Notes on Ceraurus pleurexanthemus, Green. <^ Annals Lye. Nat. 

 Hist. N. Y., vol. xi, pp. 155-162, pi. xi. November. New York, 1875. 



4. 



Walcott, C. D. Preliminary Notice of the Discovery of the Remains of the Nata- 

 tory and Branchial appendages of Trilobites. <^28th Regent's Report N. Y. 

 State Mu8. Nat. Hist., pp. 89-92. 1877. Albany, 1879. 



5. 



Walcott, C. D. Descriptions of New Species of Fossils from the Trenton limestone. 



<28th Regent's Report N. Y. State Mus. Nat. Hist., pp. 93-97. 1877. Albany, 



1879. 



Page. 



OonwZitna, Miller, MS., 1818 93 



O. quadrata, n. s., Walcott, 1877 93 



*0onehopelti8, n. g., Walcott, 1877... 93 



0. alttrnata, n. 8., Walcott, 1877 93-94 



O. minnesoteneis, n. s., Walcott, 1877 94 



Bathyurus, Billings 94 



B. longispinus, n. a., Walcott, 1877 94r-96 



Aaaphtts, Brongniart, 1822 96 



A. romingeri, n. s., Walcott, 1877 96-97 



A. voiseonaerms, n. s., Walcott, 1^77 97 



6. 



Walcott, C. D. Notes on some Sections of Trilobites from the Trenton limestone, 

 [and] Note upon the Legs of Trilobites, <31st Regent's Report N. Y. State Mus. 

 Nat. Hist., pp. 61-65, pi. i. Albany, 1879. 



Pnblislied in advance, September 20, 1877, pp. 1-17, pi. L 

 Extracts from the 31 st Regent's report, pnblislied in March, 1879. 



* "oyxii shell ; n-eXrii, shield. 



185 



