266 JOURNAL OF CONCHOLOGY. 



ADDITIONS TO THE LAND SHELLS OF GIBRALTAR, 



By J. PONSONBY. 

 Dr. Kobelt published in the Nachrichtsblatt of the German 

 Malacozoological Society a list of the Land Shells found by him 

 on the rock of Gibraltar, observing at the same time that further 

 research would doubtless result in the discovery of additional 

 species there. This prediction has been verified, and we are now 

 enabled to add the following to the original list of twenty species : 



21. Helix apicina Lam. — Plentiful on the grass outside the 

 Landport gate. 



22. Hyalina Botterii (Parr.) Pfr. 



23. Hyalina hydatina Rsm. — These two small species are 

 found under stones amongst damp herbage. They are rare. 



24. Pupa granum Drap. — Not uncommon under stones in 

 dry exposed places. 



25. Pupa minutissima Hartm.— 'Common amongst detritus 

 at the foot of the cliffs. It has not yet been observed in a 

 living state. 



26. Caecilianella Petitiana Ben. — Dead specimens with the 

 foregoing. More rarely living under stones rather deep in 

 the ground, in damjD places where there is grass, or shade 

 from trees. 



27. Acme ? n. sp. — A single dead specimen with Picpa 



niinutissima. 



Dr. Boettger, the well-known Conchologist of Frankfort, 

 has been good enough to identify all the foregoing. With 

 reference to the Acme, he has supplied a diagnosis written with 

 his accustomed care and skill. He speaks of the shell as 

 '■'■ peraffinis H. sublineatce Andr." The publication of this des- 

 cription is however withheld for the present, in the hope that 

 further specimens of this minute species (alt. 3 mill., diam. ^ 

 mill.) may be discovered later on. 



Amongst the shells enumerated by Dr. Kobelt is " No. 14, 



Helix (Xerophila) ? " Dr. Boettger now pronounces these 



shells to be undistinguishable from our British Helix virgata. 



J.C, iv., Jan., 1885. 



