TITLES, BIOLOGY. 
Verm. 19 
261. Weir, J. Resistance des vers et des insectes dans les grands froids. 
Scientif. Amer., Oct. 23, 1897 ; and Natural. Canad. xxiv, pp. 151-153. 
262. Wheeler, W. M. The maturation, fecundation and early cleavage 
of Myzostoma glabrum , Leuck. Arch. Biol, xv, pp. 1-77, pis. i-iii. 
263. [Willey, A. (1) On Ctenoplana. Quart. J. Micr. Soc. xxxix, pp. 323- 
342, pi. xxi, 1896. Not properly recorded in last year's record.] 
264. . (2) On Heteroplana, a new genus of Planarians. Quart. J. 
Micr. Soc. xl, pp. 203-205, 1 fig. 
265. Woodworth, W. McM. (1) On the occurrence of Filar oides mustel- 
arum , van Ben., in American Skunks. Amer. Nat. xxxi, pp. 234 & 
235. 
266. . (2) Contributions to the morphology of the Turbollaria. n. 
On some Turbellaria from Illinois. Bull. Mus. Harvard, xxxi, pp. 3- 
16, 1 pi. 
267. Zykoff, W. Beitrage zur Turbellarienfauna der Umgegend von 
Moskau. Zool. Anz. xx, pp. 450-452. 
Continuation of paper in 1892 ; 6 spp. added. 
II. BIOLOGY. 
(Of Annelids, Platyhelminthes and Nemathelminthes.) 
General. 
Anatomy and histology of the Ampharetidce ; Fauvel (3) : of Eupoly- 
odontes cornishii ; Fauvel (1). — Anatomy of the genus Spirorbis, external 
and internal asymmetry in 20 different species from different parts of the 
world ; M^snil & Caullery (4) : of Spirorbis borealis ; Schiveley. 
Structure of Epibdella hippoglossi ; Schott. 
Anatomy of Distomum patellar e, n. sp. ; Sturges. 
General anatomy of Nemertines ; Burger ; Joubin. 
Anatomy and systematic of 2 new species of Rhabdocoel planarians ; 
Calandruccio : of Ctenoplana', Willey (1): of Heteroplana , a very 
asymmetrical new genus of the Archiplanoidea ; Willey (2). 
Monograph of Filaria and Spiroptera ; Stossich (2) : of the Gordiidce ; 
Camerano (4). 
External Features. 
External anatomy of Avipharetidce ; Fauvel (3) pp. 14, 135, 155 & 163 : 
of Spionidce and Disomidce ; Mesnil (2). 
Right-handed and left-handed twisting in different species of Spirorbis , 
greater development of duette on the concave side in each case ; Mesnil 
& Caullery (4) p. 219. 
Segmentation and annulation in Leeches ; Blanchard (2).— Metamerism 
olNephelis-, Bristol. 
Homoplastic modification of form in commensal Nereids ; Harrington. 
A cestode with parapodia-like lobes on the side of the body ; Diamare 
(1) ; and Jacobi (1). 
An asymmetrical Planarian, one side of the body atrophied ; Willey 
(2) . — Axial relations of Ctenoplana-, Willey (1). 
