480 MR. G. F. ANGAS ON THE [Julie 3, 



"Only in high country, as high as 6000 feet, Costa Rica" 

 (Gabb). 



Dr. Gabb gives the following notes respecting the animal : — " Head 

 and appendages and all the upper surface black ; upper margin of 

 foot yellowish brown. Entire surface granulated and corrugated. A 

 groove around the anterior and inner base of each upper tentacle, 

 becoming parallel and running posteriorly to the shell, leaving a 

 median linear ridge. Lateral appendages in part retractile, and, when 

 at rest, curved backwards against the sides of the head. Their front 

 edges acute, posterior edges thicker and rounded. On expanding, 

 first the upper tentacles are protruded, then the lower, and finally 

 the lateral appendages. Sole of the foot perfectly black. On being 

 disturbed the animal withdraws into the shell, all except the foot, 

 which remains outside with its edges corrugated. Doubtless in dry 

 weather the whole could be retracted ; but the specimen which I drew 

 could not." 



16. Glandina sowerbyana, Pfr. 



Achatina (Glandina) sowerbyana, Pfr. P. Z. S. 1846, p. 32. 



Achatina sowerbyana, Reeve, Conch. Icon. Achatina, pi. 8. 

 figs. 26 a & b. 



Glandina sowerbyana, form B, Strebel, Mexik. Land- und Siissw.- 

 Conch. ii. Taf. v. a. fig. 10 m. 



Only two specimens found. 



Although Strebel considers G. lignaria, Reeve, to be only a variety 

 of this species, I am inclined, with MM. Crosse and Fischer, to 

 regard it as distinct. G. sowerbyana is much more ovate, has a 

 shorter spire and a larger aperture, with a coarser granulated 

 sculpture and a more solid texture than G. lignaria, which is more 

 fusiform, thinner, and very finely granulated. The same differences 

 of character are also strongly marked in the young shells. 



Locality similar to that of the last species. 



17. Glandina aurata ? Morelet. 



Glandina aurata, Morelet, Test. Noviss. i. no. 20, p. 12 (1849). 



Glandina aurata, Crosse et Fischer, Expe'd. Scient. du Mexique, 

 Mollusca, pi. 3. figs. 7, 7a. 



Costa Rica. 



Only one specimen obtained, with the living animal (Plate XL. 

 fig. 6.) 



This shell is more like G. aurata of Morelet than any other ; 

 indeed I cannot detect any specific difference. 



18. Glandina isabellina, Pfr., var. 



Achatina isabellina, Pfr. P.Z.S. 1846, p. 32; Reeve, Conch. 

 Icon. Achatina, pi. 21. fig. 95. 



" Several specimens met with, but few in good condition. Rare • 

 from the hills, Costa Rica " (Gabb). 



This appears to be a variety of G. isabellina, Pfr., with the last 



