ADAMS : OBSERVATIONS OX THE PAIRING OF UMAX MAXIMUS L. 95 



ticuliere des Mollusques Terrestres et Fluviatiles," published in 1819, 

 and this description the author gives at second-hand from M. 

 Werlich. The details tally very fairly with my own observations, but 

 not altogether, and this discrepancy inclines me to think that some 

 other, though closely-allied, species was under observation. Werlich 

 speaks of the extrusion of the organ before the suspension of the 

 animals, which I have never seen, nor do I think it likely to happen, 

 for this reason ; if the organs were extruded previous to the mutual 

 suspension, they would inevitably become covered with grit and dust, 

 which would seriously interfere with their functions ; (the case is very 

 different with Arion titer, Agriolimax agrestis, &c, which copulate on 

 the ground, and extrude a much smaller organ, and one which is 

 erectile. In the case of these latter, actual penetration takes place, 

 which is not the case with Limax maximus). Ferussac's figures, too, 

 are quite unlike anything that I have observed, and I fancy he drew 

 them himself from Werlich's description, as I cannot think that Wer- 

 lich after having witnessed the operation could have drawn figures so 

 much at variance with the reality. He says, "Nous avous fait copier 

 les figures qui accompagnent cette note, PI. IV. A., de notre Histoire 

 generale, afin de faciliter l'intelligence du recit tres interessant de 

 Mr. Werlich." 



It is just possible that the suspension of Z. marginatus Miiller 

 (Z. arbor inn, B. Ch.) from the branches of trees is for the same pur- 

 pose as that of Z. maximus. 



♦•••<♦- 



Note on Terebra eximia Dh. — On looking through a miscellaneous series 

 of beach-collected marine shells from Borneo, received from the late Rev. W. Turner, 

 I was highly gratified to recognize amongst some other Terebra a good specimen of 

 T. eximia Dh. It is 36 mm. in length, and although rather smaller than the one 

 recorded by Mr. J. C. Melvill and myself, in our recent paper on " Madras Mol- 

 lusca " (antea p. 35, PI. I., fig. 8), it is equally good as regards condition, sculpture, 

 and marking. The discovery of another example of this rare and beautiful species 

 so soon after our Madras record, is extremely interesting, especially as the type 

 specimen, from an unknown locality, was described so long ago as 1859 {Proc. Zool. 

 Soc, 1859, p. 314), and has hitherto remained unique. — R. Standen {Read before 

 the Society, Feb. 9th, 1898). 



Note on a new variety of Testacella rnaugei Fer.— Through the kind- 

 ness of Dr. Harmer, I have recently been permitted to examine a collection of 

 slugs in the Museum of Zoology of the University of Cambridge ; amongst other 

 interesting forms I notice a perfectly black specimen of Testacella maugei Fer. 

 I have previously met with very dark examples of this species, but none have 

 approached the uniform black colour of the Cambridge specimen, particulars of 

 which are given below : — T. matigei Fer. var. now nigra, whole of body, foot- 

 fringe, and foot-sole, a deep black. Loc, Tenby, 1892 (A. H. Cooke), (Mus. 

 Zool. Univ. Camb.). — Walter E. Collinge, F.Z.S., Mason University College, 

 Birmingham {Read before the Society, May nth, 1898). 



