112 BULLETIN OF THE 



Agassiz, Louis (continued). 



Twelve Lectures on Comparative Embryology, delivered before the Lowell 

 Institute in Boston, December and January, 1818-49. Boston, 1849. 

 101 pp. (Originally published in the Boston Traveller.) 



Lectures II. and III. On Development of Echinoderms ; p. 12. Trav- 

 eller, of Dec. 22, 1818. 



Die Entwickelung eines Seesternes, Echinaster. (Erom Dail^ Evening Trav- 

 eller, Boston, Dec. 22, 1818.) Archiv f. Anat. Phi/s. unci Wiss. Med. 

 1851. pp. 122-124. 



(See also (p. IIG) Desok.) 

 Allman, George James. 



On a Pre-Brachial Stage in the Development of Comatula, and its importance 

 in relation to certain Aberrant Forms of Extinct Crinoids. (Head Feb. 16, 

 18()3.) Trans. Roy. See. Edinburgh, XXUI. pp. 241-252, PI. XIII. 

 1864. 



Anderson, John. 



On an apparently New Form of Holothuria. Ann. Mag. Nat. Hist., March, 



18G2, IX. pp. 189-191, PI. XL 



(Young Holothuria.) 

 Ankum, H. J. van. 



Mededeelingcn omtrent de Vergrociing van de Generatie-orgauen bij Echinus 

 en eenige verwaute Geslachten. Tijdschr. Nederl. Lierk. Vereen., I. pp. 

 176-187, PI. IX. 1874. 



Abstr. : Niedcrl. Arch. Zool., III., Pt. III. p. 279. 1877. 



Sur la Soudure des Organes Geuitaux des Oursins Reguliers. Arch. Ncerl., 

 XI. pp. 97-116, PI. IX., X. 1876. 



Apostolides, Nicolas Christo. 



le These. AnatomiectDeveloppcmcnt des Ophiures. Archives de Zool. E.rper. 

 et Gener., X., PI. VII.-XII. 1881. 



(Theses prc^sent^es a la Faculte des Sciences de Paris, 1881. Paris, No. d'Ordre 

 471. 104 pp., G pi.) 



Baer, K. E. v. 



Neue Untersucliungcn ueber die Entwickelung dcr Thierc. Froriep's Neue 



Nofizrn, XXXIX. p. 38. 



(Ei des Seeigel.) 



Bull. Physic-Math. Acad, de St. Petersbourg, V. p. 234. 



(Pluteus of Echini.) 

 Balfour, Francis M. 



A Treatise on Comparative Embryology. Vol. I. xi -\- 492 + ^^"- PP-' 

 275 figs. London, 1880. Vol. IT. xi. + 655 + xxii. pp., 429 cuts. 



London, 1881. 



(Chapter XX., p. 453. Echinodermata.) 



