9 Verm. 
XV. VERMES. 
INTRODUCTION. 
Special attention may be drawn to a few points in nomenclature. The 
written laws of priority have not yielded satisfactory results among the 
Cestoda where the confusion is verv great indeed. In Oligocheeta we 
have to signalise the disappearance of the well-known genus Perichceta 
[Michaelsen (254 etc.)] and in Trematoda the attempted dismemberment 
of the time-honoured genus Distomum. In regard to the latter an un¬ 
fortunate overlapping has occurred in the case of Looss (213) and of 
Luhe (216); the same generic name is applied to two different groups of 
species, and in several instances different generic names are applied to 
identical groups of species, though both works were issued precisely 
on the same date. 
Of the monographic works which have appeared during the year the 
most important are the following:— Graff (152) Land planarians, Attems 
(14) Rhabdocoela of Heligoland, Bretscher (63) Oligocheeta of Switzerland, 
Graf (151) Histology of Hirudinea, Hilgendorf (166) Rotifer a of New 
Zealand, Lund (219) Rotifera of Denmark, Looss (213) Trematoda of 
Egypt, Maupas (244) Encystment of Nematoda, Fauvel (121-124) Areni- 
cola , Linstow (205) Nematoda , Michaelsen (255) Oligocheeta terricola, 
Boveri (50) Development of Ascaris megalocephala , St Joseph (333) 
Polychceta of Brest, Ssolowiew (359) Polychceta of White Sea, Stiles & 
Hassall (361) Parasites of Fur Seal, Vaullegeard (382) Tetrarhynchidce, 
Cerfontaine (78) Onchocotylince , and a few others to be found in the list 
of titles given below. 
I. TITLES* 
1. Aigre, D. Sangsue dans le pharynx. Arch, parasit. ii, pp. 141 & 
142. 
Cf. Blanchard (37). 
2. Albert, Prince de Monaco. Sur la distribution bathymetrique de 
certaines espfeces d’animaux marins. Cinquantenaire Soc. Biol. Paris 
pp. 55 & 56. 
Bonellia viridis from 600 metres. 
3. Alessandrini, G. Sovra due casi di anormale espulsione di Ascaris 
lumbricoides Lin. Boll. Soc. Rom. Zool. viii, pp. 83 & 84. 
4. Allen, E. J. On the fauna and bottom-deposits near the thirty- 
fathom line from the Eddystone Grounds to Start Point. J. Mar. 
Biol. Ass. vol. v, pp. 365-542. 
Vermes pp. 476-486 and p. 531, Chart x. 
5. Andre, Emile. Anomalie de l’appareil genital male chez la Sangsue. 
Rev. Suisse Zool. vi, pp. 427 & 428, 1 fig. 
6. *Anon. Hygiene des mines. Discussion sur l’ankylostomasie, maladie 
parasitaire des mineurs. Comite central des houilleres de France, 
Circulaire No. 1690, 4°, 8 pp., Belgium 1899. 
* An asterisk prefixed to a quotation indicates that the Recorder has not seen the 
Paper or Work referred to. 
