294 WILLIAM BLAXLAND BENHAM. 
32a, GruBe.— Zool. of Rodriguez ” (‘ Phil. Trans.,’ vol. clxviii (Transit Ex- 
pedition, p. 554). 
33. LANKESTER.—“ Zool. of Kerguelen Isl.” (‘Phil. Trans.,’ vol. elxviii), 
(Transit Expedition, p. 264). 
34, Horst. ‘ Notes from the Leyden Museum,’ ‘vol. v, p. 185. 
35. Hurron.—‘ Trans. of New Zeal. Inst.,’ vols. ix and x. 
36. Bepparp.—“ Pleurocheta Moseleyi ” (Trans. Roy. Soc. Hdin.,’ 
vol. xxx, 1883, p. 481). 
37. Brepparp.—“ Notes on some Earthworms from India” (‘ Annal, and mee 
Nat. Hist.,’ vol. xii, 1883, p. 213). 
38. Brpparp.— Gigantic Harthworms” (‘ Nature,’ xxx, 1884, p. 570). 
39. Bepparp.—“ Notice of Mem. on Microcheta Rappi” (‘ Proc. Zool. 
Soc.,’ 1884, p. 478). 
40. Brpparp.—‘ Proc. Roy. Phys. Soc. Edinb.,’ 1884, pp. 369, 424. 
41, Bepparp.— Nephridia of New Earthworm” (‘ Proc. Roy. Soc.,’ 1885, 
p- 459). 
42. Bepparp.—‘ Zool. Anzeig.,’ Bd. viii, May, 1885. 
43. Horst.—‘ Notes from the Leyden Museum,’ vol. vi, 1884, p. 103. 
44, LankesTeR.—‘ Ann, and Mag. Nat. Hist.,’ vi, 1870, p. 34. 
45, LANKESTER.—‘ Quart. Journ. Mic. Sci.,’ 1878, p. 68. 
46. BourNE and BLoMFIELD.—‘ Quart. Journ. Mic. Sci.,’ xxi, 1881, p. 500. 
47, WitL1ams.— Struct. and Homology of Reproductive Organs of Anne- 
lids” (‘ Phil. Trans.,’ 1858, p. 93). 
48. LankrstER.—< Anatomy of the Earthworm” (‘Quart. Journ. Mic. Sci.,’ 
1864 and 1865). 
49, Jaquer.— Syst. Vase. Annelides” (‘ Mitth. Zool. Stat. Neap.,’ vol. vi, 
1885, p. 330). 
50. —Mousstsovics.—‘“ Die Lumbriciden Hypodermis” (‘Sitzung. d. k. 
Acad. Wien,’ Ixxvi, 1878, p. 13). 
EXPLANATION OF PLATES XV, XVI, & XVI dis, 
Illustrating Mr. Benham’s “ Studies of Earthworms.” 
References. 
B. Buccal region. 4. m. Basement membrane of epidermis. 4.7. Branch 
of the dorsal trunk which passes down parallel with the cireumpharyngeal 
nerve commissure. 4.v. Blood-vessels. 0.2. Body wall. c. Drain-pipe cell 
forming the wall of the nephridial lumen. cap. Capillaries. c.g. Cerebral 
