108 THE NAUTILU8. 



AH APPABENTLY NEW SLUG FROM THE EIVEB NILE. 



BT T. D. A. COCKERELL. 



The slug here described was kindly placed in my hands for deter- 

 mination by Professor H. M. Gvvatkin, of Cambridge, England, 



Veronicella nilotica, n. sp. 



Length 43 mm., breadth 11^: unusually narrow and parallel- 

 sided ; sole narrow, its width about 4 mm., with 16 transverse 

 grooves (not counting the lesser ones between each pair of strong 

 ones) in 5 mm. of length ; female generative orifice li mm. from 

 sole and '2.^ from lateral margin, its distance from head about 27^ 

 mm. Upper surface finely and densely tuberculate, some of the 

 tubercles a little larger and more prominent than the others ; hy- 

 ponotum finely and more obscurely tuberculate. Color above (in 

 alcohol) pale ochreous densely mottled with dark grey, the two colors 

 about equal in amount ; there is a faintly indicated pale dorsal band, 

 on each side of which the dark mottling is heaviest ; on each side at 

 about 2 mm. from the margin, there is a very faipt suggestion of a 

 dusky stripe. The underside is pallid, with a dusky suffusion toward 

 the sides of the hyponotum. Upper tentacles dark blue-grey. Stomach 

 not covered by the liver, but rather broadly exposed ; course and 

 form of the intestine quite normal, the last loop traversing a little 

 less than a semicircle ; filiform glands extremely long (20 mm.), 

 twisted right round the gut, the fully developed ones only five in 

 number, but several other short ones at the base of the bundle. 



The sole does not project beyond the end of the body. An appar- 

 ently distinct species, best known by its narrow form and very long 

 filiform glands. It extends the distribution of the genus about fifteen 

 degrees north in Eastern Africa. 



Collected by the Nile, above Khartoum, by Mr. Harold H. King, 

 of the Wellcome Research Laboratories, Khartoum. 



NOTES. 



Errata " Land MoUusca of Aldabra," in the October number. 



Line 4, " Conoro " is a typographical error for ♦• Comoro." Quota- 

 tion marks should be placed at the beginning of the sentence of line 

 7, also of each succeeding paragraph and the finish of article. — 

 Maxwell Smith. 



