152 LAND AND FRESH-WATER SHELLS. 



salt-water marshes near Topsham it is not a common shell about here. 



Bulimus obscurus: this does not appear to be of frequent occurrence, for I 

 have only met with about half a dozen. I may mention in this place that 

 Bulimus Ooodalli, has naturalized itself in the stove at Mr. Pince's nursery 

 at Exeter. The animal inhabiting this shell is very interesting; it appears 

 very active amongst the damp moss at the hottest part of the stove, where 

 som3 nepenthes were growing. The little animal is of a bright yellow colour. 



Zua luhrica does not appear to be common, as I have only found three 

 specimens. Pupa uinbilicata is very plentiful at Counties Weir. Clausilia 

 nigricans is very abundant in every hedge. Carychium minimum: common 

 amongst decayed leaves in damp ditches. Limncea pereger is very abundant; 

 as also Vr. I. L. palustris is also common in many places round Exeter. L. 

 truncatulus: numerous in several places. 



Ancylus Jluviatilis: abundant and fine in a shallow brook which runs through 

 Alphington. Velletia lacustris: common in the Exe, on aquatic plants. Physa 

 fontinalis does not appear to be very plentiful, I have met with some good 

 specimens in a ditch by the Exeter railway station. 



Planorhis albus is common in the canal. P. inarginatus: common in ditches, 

 etc. P. vortex is also comnaon in ditches etc. P. spirorbis: very rare, I have 

 only met with one. P. contortus is very abundant. 



Cyclostoma eleyans I have not met with here, but I have had it from 

 Torquay. Cyclas cornea is very abundant in the Exe: at times, when there 

 is a great fall of water, these shells are brought down in immense quantities. 



Pisidium pusilhim: I found one specimen of this in a ditch at Counties 

 Weir, May 22nd., 1853. P. amnicum: I had a tuft of Tsolepis setacea 

 brought to me by a person who wanted the name of it, and in the tuft was 

 a specimen of this shell; it was taken from Stoke wood. 



Anodon cygneus is very fine and plentiful in the Exe; also a variety very 

 much like Vr. VI. complanatas, though not so beautifully coloured as that 

 variety, and is rather more produced at the syphon end. 



Alasmodon margaritiferus: I have found several of this species in the Teign, 

 near Dunsford. 



Thus concludes my meagre list of Land and Fresh-water Shells. 



I have just been shown a number of the ^'Zoologist," for January 18;'>4; 

 and at page 4176, it is stated that Mr. Foxcroft had reared some Ichneumons 

 called Tryphon nigriceps, of Gravenhorst, from the cocoons of Trickiosoma 

 lucorum, and the Ichneumon is new to Britain, Now I beg to say that I 

 reared, and much to my annoyance at the time, some of these Tryphons, from 

 cocoons of Trichiosoma lucorum; taken from a whitethorn hedge at Heavitree, 

 near Exeter, in January, 1852, and the Ichneumons came out in the June 

 following, that is June, 1852. I was not aware that the Tryphon was new 

 to the British Fauna, otherwise, I should have made it known at the time; 

 but, as it is, I think I am entitled to the priority. 



There is one thing I wish to observe in regard to the specific name of 



