OLIGOCH^ETA. 
Verm. 37 
General Biology. 
Morphology : head, as metamere, Malaquin (290). 
Anatomy and histology of the blood system, Gungl (176). 
Blood flow in Biplocardia Communis , Smith & Barrett (422). 
On the existence of a tubular apparatus in the nervous tissue of the 
earthworm, Cajal (63). 
Psychology, Hanel (185). 
Distribution of sense organs in Microscolex elegans, Bovard (39). 
Affinities and systematic relationships, Hubrecht (203). 
Actinomyxidce as parasites of Tubificidce , Caullery & Mesnil (78). 
Variation and correlation, Lumbricus } dimensions and number of somites, 
Raymond & Fuller (365). 
Roots of garden plants damaged by Enchytrceus worms, at Nottingham, 
Theobald (445). 
Regeneration in Enchytrceidce , Nusbaum (338). 
Regeneration, Morgan (321). 
Regulation in Stylaria lacustris , Harper (186). 
Double formations in Lumbricidce , Korschelt (285). 
Development of earthworms, Reeker (366). 
Faunistic, Entz (132). 
Distribution. 
Geographical distribution, Ude (452). 
Ireland, Allolobophora cyanea , Trumbull (451). 
Switzerland, fauna, localities, lists, Bretscher (51). 
Switzerland, n. spp., Bretscher (52). 
Italy, n. spp., Cognetti (92, 94). 
Italy, n. sp., Allolobophora , Rosa (379). 
Bologna, earthworms, Bortolotti (37). 
Gulf of Naples, n. spp., Pierantoni (351). 
Modena, n. sp., Allolobophora , Rosa (379). 
Modena, n. spp., Issel (209). 
Modena, cave forms, n. spp., Cognetti (99). 
Ecuador, n. spp., Cognetti (96). 
Costa Rica, n. spp., Cognetti (93, 97). 
Brazil, lists of spp. with characters [no plates], Moreira (318). 
Chili, n. sp., Cognetti (98). 
Patagonia, n. sp., Rosa (377). 
Bermudas, Verrill (461). 
Ceylon, n. spp., Michaelsen (307). 
Ceylon, Earthworms, Spolia Zeylan. i, 4, pp. 113 & 114. 
Central Ceylon, n. sp., Michaelsen (307). 
Systematic. 
Oligochceta of Ceylon, Spolia Zeylan. i, 4, pp. 113 & 114. 
Allolobophora cyanea , Ireland, Trumbull, Irish Natural, xiii, p. 155; 
A. subrubricunda, A. terrestris , A. trapezoides , double formations, 
Korschelt, Zool. Jahrb. Suppl. vii, 1904, pp. 257-300, 2 pis. 
A. spelcea , Italy, anatomy, Rosa, Atti Soc. Modena (4) iv, 35, pp. 36-39 ; 
A. ( Eopliila ) nematogena , Modena, anatomy, Rosa, op. cit. (4) v, 36, 
p. 11 : n. spp. 
Andiodrilus biolloyi , Costa Rica, Cognetti, Boll. Mus. Torino xix, No. 462, 
p. 4, n. sp. 
