112 BULLETIN OF THE 



Agassiz, Louis {continued). 



Twelve Leetures ou Comparative Embryology, delivered before the Lowell 

 Institute in Boston, December and January, 18^8-49. Boston, 1849. 

 104 pp. (Originally published in the Jiostua Traveller.) 



Lectures 11. and 111. On Development of Echiuoderms ; p. 12. Trav- 

 eller, of Dee. 22, 1848. 



Die Entwickclung eines Seesterncs, Ecliinaster. (From Bailj/ Evening Trav- 

 eller, Boston, Dee. 22, 1848.) Archio f. Anat. Fhijs. mid IViss. Med. 

 1851. PI). 122-124. 



(See also (p. 116) Desor.) 

 Allman, George James. 



On a Prc-Bnichial Stage in the Development of Comatula, and its importance 

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

 18(i;5.) Trans. Roi/. Soc. Edinburgh, XXllI. pp. 241-252, PI. XIII. 

 1864. 



Anderson, John. 



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



1802, IX. pp. 189-191, PI. XI. 



(Young Iloluthnria.) 

 Ankum, H. J. van. 



Mededeeliiigen omtrcnt de Vergroeiing van de Gencratie-orgauen bij Echinus 

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

 176-187, PI. IX. I8I4. 



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



Sur la Soudure des Organes Gcuitaux des Oursins Reguliers. Arch. Neerl., 

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



Apostolides, Nicolas Christo. 



1® These. Anatomie et Developpcment des Ophiures. Archives de Zool. E.rper. 

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



(Theses presentees a la Faculte des Sciences de Paris, 1881. Paris, No. d'Ordre 

 471. 104 pp., G pi.) 



Baer, K. E. v. 



Neue Untersuehungcn neber die Entwickclung dcr Thiere. Froriep's Neue 



Notizen, XXXIX. p. 38. 



(Ei des Seeigel.) 



Bidl. Phj/sic-Math. Acad, de St. Petersboicrg, V. p. 234. 



(Pluteus of Echini.) 



Balfour, Francis M. 



A Treatise on Comparative Embryology. Vol. T. xi + 402 -{- xxii. pp., 



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



London, 1881. 



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



