402 
E. RAY LANKESTER. 
7 Gunther, A. C. L. G. — In the ‘ Report on the Zoological Collections, 
made in the Indo-Pacific Ocean during the Voyage of H.M.S. Alert,’ 
1884. 
8. Rathke, H. — ‘Bemerkungen ueber den Bau des Amphioxus lanceo- 
latus,’ Konigsberg, 1841. 
9. Huxley, T. H. — ‘Proceedings of the Royal Society,’ vol. xxiii, 1874, 
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logie du Branchiostome ou Amphioxus,” ‘Annalesdes Sciences 
naturelles,’ 3me ser., “ Zoologie,” tome iv, Paris, 1845. 
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bourg,’ vii scrie, tome xi, No. 4, 1867. 
12. Lankester, E. Ray. — ‘Quart. Journ. Micr. Sci.,’ vol. xv, 1875, p. 257. 
13 . Muller, W. — ‘Beitriige zur Anatomie und Physiologie als Festgabe an 
Carl Ludwig,’ 1875. 
14 . Kossmann. — ‘ Arbeiten aus den zoologisch-zootomischen Institut in 
Wurzburg,’ 1874. 
15 . Moreau, Camille. — “ Recherches sur la structure de la corde dorsale 
de l’Amphioxus,” ‘Bulletins de l’Acad. Royale de Belgique,’ tome 
xxxix, No. 3, 1875. 
16 . Hatscbek, B. — ‘ Anatom. Auzeiger,’ Aug. 15th, 1888. 
17 . Rohde. — ‘ Schneider’s Zoolog. Beitrage,’ vol. ii, 1888. 
EXPLANATION OF PLATES XXXIV, XXXV, XXXVI, 
XXXVI a*, & XXXVI B, 
Illustrating Professor Lankester 5 s “ Contributions to the 
Knowledge of Amphioxus. 5 ’ 
PLATE XXXIV. 
Eig. 1. — Semi-diagrammatic drawing of a dissection of Amphioxus lan- 
ceolatus. The animal is resting on the dorsal surface: the ventral half of the 
body has been separated by a horizontal cut, reaching on each side from near 
the mouth to the anus, and has been thrown over to the left side of the 
animal. The perforated region of the primitive body wall exposed by thus 
removing the epipleura has been severed from its median dorsal attachment 
and pulled over to the animal’s right side, the dislocation being aided by 
cutting through the body transversely. The pharyngo-dorsal coelom right and 
left of the median attachment of the pharynx to the notochordal sheath is thus 
exposed, the deeply folded wall formed by the pharyngo-pleural pouches being 
cut through. The lining membrane of ccelomic spaces is everywhere coloured 
blue ; other surfaces are left either colourless or of brownish tint. The 
