2 Ech. 
ECHINODERWATA. 
13. Ludwig, H. Das Mundskelet der Asterieu und Ophiuren. Z. wiss, 
Zool. xxxii. pp. G72'-G88. 
14. . Echinodermenstudien. Zool. Anz. ii. pp. 640-512. 
16. — — . Notiz iiber Trichaster elegans. L. c. pp. 18-20. 
IG. . Bemorkuiigon zu Asindara^ Pohlif]f. L. c. pp. 41-43. 
17. . Dio Echinodevmou dcs Mittelmccres. MT. z. Stut. Neap. I. 
pp. 523-580. 
18. Lyman, T. Oj^)hiuridw and Astrophytidw of the ‘Challenger* 
Expedition. II. Bull. Mus. 0. Z. vi. No. 2, pp. 17-83, pis. xi.-xix. 
19. Martens, E. von. Vorzeiguug eineseigenthiimlichen sechsarmigen 
Schlangeiisterns, Ophiothda dividiia, ep. n. SB. nat. Fr. 1879, 
pp. 127-130, woodcut. 
20. Perrier, E. Les Stelldrides de Tile Saint-Paul. Arch. Z. exper. 
viii. pp. 47-51, pi. iv. 
21. Selenka, E. Keimbllitter und Organanlage der Echiniden. Z. 
wiss. Zool. xxxiii. pp. 39-55, pis. v.-vii. ; SB. Soc. Erlang. 1879, 
pp. 100-108. 
22. Sladen, W. P. On the A steroid ea and Echinoidea of the Korean 
Seas. J. L. S. xiv. pp. 424-445, pi. viii. 
23. . On the Structure of Astrophiura, a new and aberrant genus 
of Echinodermata. Ann. N. H, (5) iv. pp. 401-415, pi. xx. ; Zool. 
Anz. ii. pp. 10 & 11. 
24. . On Lepidodiscus lehouri^ from the Carboniferous of North- 
umberland. J. G. Soc. XXXV. pp. 744-751, pi. xxxvii. 
25. Stewart, C. On Certain Organs of the Cidaridce. Tr.'L. S. (2) i. 
pp. 5G9-572, pi. Ixx. 
26. ViGUiER, C. Anatomic compar^e du squelette des Stell^rides. 
Arch. Z. exp($r. vii. pp. 33-250, pis. v.-xvi. [See also op. cit. viii. 
pp. i.-v.] 
27. Woods, J. E. Tenison. A List of Australian Starfishes. Tr. Phil* 
Soc. Adelaide (1878-9), pp. 89-93. 
28. . The Echini of Australia. P. Linn. Soc. N. S. W. ii. [1878] 
pp. 145-176, 342-344. 
29. On some new Australian Echini. Op. cit. iv. pp. 282-291, 
pis. xiii. & xiv. 
On the Echinodermata of Kerguelen’s Land ; see E. A. Smith, Phil. 
Tr. clxviii. pp. 27C-281, pis. xvi. & xvii.; and of Rodriguez, 1. c. pp. 5G1- 
568, pi. li. figs. 1-3. 
Ludwig (17) finds 93 certain and 23 probable species of Echinodermata 
in the Mediterranean. 
Woods (28) gives a list of the species found in the Anstralian seas, with 
short descriptions; the nomenclature followed throughout is that of 
A. Agassiz. He points out that there is not much connection between 
the present and the tertiary faunae. 
