191 1- Kennard & Woodward. — Non-Marine Molhisca. ^\. 



P. amniciim was represented by a single small specimen from Lower 

 Lough Erne. 



P. henslowanum, P. casertanitm and P. personatnm, which might 

 have been expected, especially the two last-named, have so far not been 

 obtained by Major Trevelyan. Even the prevalent Irish form, /'. 

 pusilltim, was only met with in Loughs Acapple, Shivnagh, and Derg. 



The most interesting point in relation to this genus is the further 

 confirmation of the widespread existence in north-west Ireland of /'. 

 Stecnbuchii. It was found in Loughs Acapple, Shivnagh, Derg, Vearty. 

 and Tullynasiddagh. Although we had long met with the form 

 throughout the British post-Pliocene deposits it was less than fifteen 

 months ago that the first living specimens were obtained by Mr. F. F. 

 Laidlaw from Lochan-a-Chait, Perthshire. It was next recognised 

 among specimens from the Lake District, and then from places as widely 

 apart as Achill Island and Lincolnshire. The Scotch and Irish examples 

 seem to belong to the orbicular form, whilst the Lincolnshire specimens 

 are of the most ovate type. 



Although Major Trevelyan had his boat transported by road some 

 thirteen or more miles to Lough Aguse, he was not fortunate enough 

 to obtain thence further specimens of P. Lilljeborgii. which A. W. Stelfox 

 took there in 1909. Since Major Trevelyan intends to renew his 

 researches in the coming summer, it is not too much to hope that he will 

 make further important discoveries, and that his name will be as honoureil 

 bv stuilents of malacology as it already is by students of ichthyology. 



REVIEWS. 



WORMS FROM BRITISH AND IRISH SEAS. 



A Monograph of the British Annelida. By W. C. McIntosh, M.D.. 

 F.R.S., lS:c. Vol. li.. Part ii. 4to. pp. 333-524. Plates li.-lvi. 

 coloured, and Ixxi.-lxxxvii., uncoloured. London (Ray Society), 

 1910. 



The latest part of Professor Mcintosh's elaborate work on the 

 British Annelids, or marine bristle-worms, has succeeded its predecessor 

 after so short an interval, comparatively speaking, that hopes are roused 

 of the early completion of this valuable Monograph. The present volume 

 deals with the families Nereidae, Eunicidae, Goniadidae, Glyceridae, 

 Ariciidae, and a number of Syllidae which have been added to the British 

 fauna by Major Elwes since the publication of the last part of the 

 Monograph. There are six coloured and seventeen uncoloured plates. 

 It is rather unfortunate that some of the plates illustrating species 

 described in the present part are included in the preceding volume, and 

 vice versa, and consequently the plates are not numbered consecutively. 

 The coloured figures are beautifully executed, that of Statirocephalus 

 r.ubrovittatus on Plate Iv. being probably the least satisfactory. The 



