MUSEUM OF COMPARATIVE ZOOLOGY. 247 



TRILOBITA. 

 Barrande, Joachim. 



Systeme Silurien du Centre de la Boheme. Prague et Paris. 



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

 1852. I. Suppl., pp. 182-189, PI. passim. 1872. 



Cf. A. Gekstaeckee. in Bronn's Klassen und Ordnungen des Thier- 

 Reichs, V. (Arthropoda), 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 Hocks at Troy, 

 N. Y. Amer. Journ. Sci. 8f Arts [3], XIII. 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, Paradoxides, and 

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



Walcott, C. D. 



Note upon the Eggs of the Trilobite. %lst Ann. Rep. K Y. State Mus. Nat. 

 Hist., pp. 66, 67. Albany, 1879. (Published and distributed in advance 

 of Report, Sept. 20, 1877.) Bull. Mus. Conip. Zool., at Harvard Coll., in 

 Cambridge, VIII. p. 216, PI. IV. figs. S, 8 a. 1881. 



Fossils of the Utica Slate. Trans. Albany Inst., X. (Printed in advance, 

 June, 1879.) 



Metamorphoses of Triarthrus Becki, pp. 24-33, PI. II. figs. 1-15. 



PYCNOGOBTIDA. 

 Allman [George James]. 



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

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



(Young Ammothea t parasitic in Coryne.) 

 Bohm, R. 



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

 Sitzungs-Ber. Qesell. naturforsch. Freunde zu Berlin, 1879, pp. 53-60, 

 140-142. 



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



ClaparSde, A. Ren£ Edouard. 



Beobachtungen uber Anatomie und Entwicklungsgeschichte wirbelloser 

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

 pp., 18 pi. 



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



