MUSEUM OF COMPARATIVE ZOOLOGY. 247 



TBILOBITA. 

 Barrande, Joachim. 

 X Sysleme Silurieu du Centre de la Boheme. Prague at Paris. 



Metamorplioses des Trilobites, I. pp. 257-278, PI. VII., XLIX., &c. 

 1852. I. SuppL, pp. 182-189, P1.7?^'«/«. 1872. 



Cf. A. Gbkstaecker in Bronn's Klcossen utid Ordnungen des Thier- 

 Rriehs, V. (Artlu-opoda), I. Abt., I. Halfte, pp. 1200-1208, Taf. XLIIL, 

 XL VI. Leipzig und Heidelberg, 1879. 



Ford, S. W. 



On some Embryonic Forms of Trilobites from the Primordial Rocks at Troy, 

 N. Y. Amer. Juum. Sci. .}■ Arts [3], XIIL pp. 265-273, 1 pi. 1877. " 



On additional Embryonic Forms of Trilobites from the Primordial Rocks of 

 Troy, N. Y., with Observations on the Genera Olenellus, Paradoxidea, and 

 Hydrocephalus. Amer. Journ. Sci., XXII. pp. 250-259, 13 cuts. 1881. 



Walcott, C. D. 



Note upon the Eggs of the Trilobite. "ilst Ann. Rep. N. T. State Mus. Nat. 

 Hist., pp. 66, 67. All)a.ny, 1879. (Published and distributed in advance 

 of Report, Sept. 20, 2577.) Bull. Mus. Comp. ZooL, at Harvard Coll., in 

 Cambridge, VIII. p. 216, PI. IV. figs. 8, 8^. 1881. 



Fossils of tlie Utica Slate. Tram. Alhany Inst., X. (Printed m advance, 

 June, 1879.) 



Metamorphoses of Triarthrus Becki, pp. 21-33, PL II. figs. 1-15. 



PYCNOGONIDA. 



AUman [George James]. 



On a Remarkable Form of Parasitism among the Pyniorjonidrn. Rep. Brit. 

 Assoc. Adv. Sci. for 1859, Trans, of Sect., p. 143. 1860. 



(Young Ammotheaf parasitic La Coryne.) 

 Bohm, R. 



Zwei neue, von Herrn Dr. Hilgendorf in Japan gesammelte Pycnogoniden. 

 Sitzungs-Ber. Gesell. naturforscJi. Freunde zu Berlin, 1879, pp. 53-60, 

 140-142. 



(On some structural characters of the young, pp. 55, 140, 141.) 



Clapar&de, A. Rene Edouard. 



Beobachtungen iiber Anatomie und Entwicklungsgeschichts wirbelloser 

 Thiere an der Kiiste von Normandie angestellt. Leipzig, 1863. viii-|-120 

 pp., 18 pi. 



(Development of Phoxichilidium, pp. 104, 105, PI. XVIII. figs. 13, 14.) 



