40 ORCULA. 



Bourg. var. bifilaris Mouss. f . longior et f . intermedia Retow- 

 ski, Bericht Senckenb. Nat. Ges., 1889, p. 254. — Pupa ray- 

 mondi Mss. var. bifilaris Mss., trifilaris Mss. und quadrifilaris 

 forma nova, Rosen, Nachrbl. d. m. Ges., vol. 37, 1905, p. 57 ; 

 also Pupa raymondi B. f. bifilaris; bifilaris truncata, pi. 2, f. 

 3 ; trifilaris Mouss. ; and Pupa raymondi B. f . quadrifilaris 

 truncata, pi. 1, figs. 9a-b, Rosen, Annuaire Mus. Zool. l'Acad. 

 Imp. St.-Petersb., xvi, 1911, p. 120. 



The small size of the shell (2.5 x 1.5 mm.) and the remark- 

 able development of epidermal spines even on the later whorls, 

 distinguish typical raymondi from the Caucasian forms. The 

 spines in Bourguignat 's figure (which is copied photographi- 

 cally on my plate) look almost too good to be true; they were 

 probably restored somewhat by the artist. Kobelt, Germain 

 and Boettger appear to know this typical raymondi only by 

 the original account; and so far as I know, none have been 

 collected at Beyrout since the original lot. The internal 

 structure is not known. 



14a. Orcula raymondi trifilaris (Mouss.). PI. 4, figs. 2, 3, 4, 

 5, 6. 



Shell rimate-p erf orate, ovate-cylindric, closely coiled, slightly 

 striatulate, slightly shining, corneous. Spire with very obtuse 

 summit and well-marked suture. Eight whorls, of which four 

 form the summit, the rest convex, tapering from the fifth, the 

 last whorl more tapering, a little compressed, somewhat 

 ascending. Aperture vertical, small, ovate-semicircular; on 

 the parietal wall one strong and compressed lamella. Peri- 

 stome expanding a little, acute, white-lipped within, the mar- 

 gins subparallel, the right margin arcuate, columellar margin 

 produced, straight, the columellar area with three minute 

 folds, diverging backward. Length 4%, diam. 2 mm. {Mouss.). 



Transcaucasia: Reduktaleh (Dr. Schlaefli, type loc). 



This form is at least subspecifically distinct from raymondi 

 by its larger size and probably also by the less developed 

 bristles. 



Boettger (1876) found that in fresh specimens from Lai- 

 lasch on each of the distant raised growth-riblets a long, erect 



