THE NAUTILUS. 55 



SOME SLUGS (AGRIOLIMAX) FROM GUATEMALA. 



BY T. D. A. COCKERELL. 



When my wife went to Guatemala early in 1912, I begged 

 her to look for slugs, which I supposed would be found in 

 abundance. To her surprise and mine, they proved extremely 

 scarce, the only one obtained being two specimens of Agrio- 

 limax, of the type of A. Iccvis. These may be described as 

 follows : 



(1). From Antigua, a locality in the highlands. PI. II, 

 fig. 3. About 12 mm. long in alcohol; mantle 5 mm. long, 

 the respiratory orifice 3*4 mm. from its anterior end; color 

 light brownish suffused with slate grey, the mantle dark slate 

 grey ; sides below mantle pallid ; sole yellowish white ; lateral 

 pedal furrow a little above middle of lateral margin of sole ; 

 median area of sole a trifle broader than lateral areas, except 

 posteriorly; shell 2% mm. long, 114 broad, narrow, slightly 

 convex, not very thick, the anterior (nuclear) end distinctly 

 emarginate ; jaw of the same type as that of A. Icevis, the 

 median projection very large. Penis sac like that figured for 

 A. tevis by Taylor, Monog. L. & F. W. Moll, Brit. Is., part 10, 

 f. 141, with the rounded end curled over, but the whole struc- 

 ture rather more slender, its length a fraction over 2 ram. 

 The lingual membrane of which a beautiful preparation was 

 kindly made for me by Miss Rosamond Patton, shows 31-15-1- 

 15-13 teeth, formed essentially as in A. Icevis (Taylor, f. 136), 

 except that the central tooth has the mesocone a trifle broader, 

 and the long and slender marginals have no sign of an ecto- 

 conal angle. The stomach was full of fragments of leaves, 

 which exhibited cells containing very characteristic crystals, 

 which my colleague Dr. F. Ramaley at once recognized as be- 

 ing exactly like the crystals in leaves of Begonia, on which 

 common tropical plant the slug doubtless fed. 



(2). From Quirigua, a locality in the tropical lowland 

 jungle. PI. II, fig. 4. About 10 mm. long in alcohol, of the 

 usual form ; mantle 5 mm. long, respiratory orifice 3 mm. from 



