MANUAL OF CONCHOLOGY. 



Vol. ^HlBULlMULW^E{BuUmulince}. 



Genus BOTHRIEMBRYON Pilsbry, 18D4. 



Bothriembryon PILS., Nautilus viii, p. 36 (July, 1894), type B. 

 melo. 



Liparus MARTENS in Albers, Die Heliceen, 1860, p. 229, type 

 B. influttts Lam. (Proposed as a subgenus of Buliminus Khrenb.). 

 PFEIFFER-CLESSIX, Nomenel. Hel. Viv., 1878, p. 2*2. 



Not L/iparuf ALBERS, Die Heliceen, 1850, p. 172 (for B. atomatus 

 and favannii), nor PFR., Malak. Bl., 1855, p. 157 (B. atomatus, 

 favannii, crassilabris), nor of H. & A. ADAMS, Gen. Rec. Moll., ii, 

 p. 133 (as a subgenus of Limicolaria). Not Liparus OLIVIER, En- 

 tomologie, ou Hist. Nat. des Insectes, vol. v, pp. 73, 283, 1807 

 (Coleoptera). 



Australian BulimulidcR with ovate- or oblong-conic shell of moder- 

 ate solidity or thin, perforate or closed umbilicus, and simple miex- 

 panded outer lip ; the cojumellar lip dilated or rehVxed, not calloused 

 or folded ; apex with 1^ to 2 whorls finely [titled, like a thimble, or 

 vertically wrinkled or costellate, the subsequent whorls differently 

 sculptured. 



The jaw is arcuate and plaited, the median segment triangular or 

 wedge-shaped. Radula about as in Bulimulus. Genital system sim- 

 ple, much as in Bulimulus. 



The sculpture of the apex (plate 4) varies considerably, passing 

 from a pattern of subvertical wrinkles, which may be close and 

 waved (tjinuii, onslowi), or more spaced (spenceri), to wrinkles so 

 much crimped as to anastomose and form a network (yr<il trick!, first 

 whorl of znflatus*); thence the transition to a regular pitted pattern 

 (as in conispira, kingi, dux) is by gradual and easy steps. This series 

 of changes is almost exactly paralleled in the American genus Buli- 

 mulus ; and as in that genus, the vertically wrinkled pattern is prob- 



