606 SUPPLEMENT. 
To the localities given, add :-— 
Hab. [S.E. Mexico :] Poana, Tabasco, “‘a rather aberrant variety, but in all probability 
belonging to this species” (Fovirosa '*). 
E. Costa Rica: Las Delicias, near Santa Clara, 400 metres (Svolley 1%: vars. 
coccinostoma and anozona); Tuis, 600 metres (Pitter, Biolley: var. anozona). 
Helicina notata (p. 38). 
Helicina notata, Fischer & Crosse, Miss. Scient. Mex., Moll. ii. p. 431, t. 56. figg. 6, 6 a-c’. 
Helicina flavida (p. 38). 
Helicina flavida, Fischer & Crosse, Miss. Scient. Mex., Moll. ii. p. 433, t. 57. figg. 10, 10a, 6, and 
11, lla (typical specimens of H. trossula, Morelet) ”; Pilsbry, Nautilus, x. p. 59 (1896) ». 
To the localities given, add :— 
Hab. [F. Mexico:] San Rafael, Jicaltepec (Townsend 2°). 
Honpvuras: Copan (v. Lhering). 
Var. beatria (p. 39). 
Helicina beatriz, Pilsbry, Proc. Acad. Phil. 1894, p. 832 ™. 
To the locality given, add :— 
Hab. [K. Costa Rica:] ‘Talamanca (Pittier) ; Valley of Tuis (Pittier & Biolley) ; Santa 
Clara, 200 metres (Biolley); Valley of Alta Coca, near Talamanca, 1000 metres 7 
(Pittier) ; between Uiskur and Mokri, Alta Talamanca, further in Alta Uren, and 
between Ukatschka and Bruschik, in Alta Taruria (Pittier). 
A specimen from Santa Clara measures no less than 10 millim. in diameter and 9 in 
height. Fischer and Crosse 2°, as well as Pilsbry 23, are inclined to treat this form as 
specifically distinct from H. flavida, which perhaps would be the best way of dealing 
with it. | 
Helicina chryseis (p. 39). 
Helicina chryseis, Vischer & Crosse, Miss. Scient. Mex., Moll. ii. p. 440, t. 57. figg. 6, 6a, 6°. 
Helicina borealis (p. 40). 
Helicina borealis, Fischer & Crosse, Miss. Scient. Mex., Moll. ii. p. 435°. 
These authors suggest that this may be a variety of H. durangoana, Mouss., next 
which I have placed it in the table of the species (anted, p. 26). They are certainly 
very similar in general aspect and in the form of the aperture; but /. borealis is of 
larger size and comparatively more depressed than the rather conical H. durangoana. 
Amongst more than a dozen specimens of H. borealis and two of H. durangoana 
before me, the latter received from Mr. Forrer, there is, however, no intermediate 
form. 
