THE NAUTILUS. 43 



oblonjrus, rotundatus, post medium loevigatus (striis spiralibus 

 evanidis). Apertura subobliqua, oblongo-angustata, albida. Col- 

 umella reflexa, incrassata, fere recta. Peristoma rectum, acutum, 

 margine extero antrorsum hand arcuato. 



Long. 44, lat. 21, alt. apert. 1*1 mill. 



Hab. Mountains above Aden. Arabia (Jousseaume). 



This is a Limicolaria of tbe typical African group and bears no 

 relation to t lie species hitherto known from the opposite coast of the 

 Somalis, like L. Revoili, Bourg., Armandi, Bourg., etc. It is re- 

 markable in being very obtuse and of an oblong shape. The mark- 

 ings are but faint, at least as far as the original specimen is con- 

 cerned. 

 2. Bulimlnus (Petrceus) Pilsbryanus Anc. 



Bulimus Jousseaumei, Bourg., in coll.; not Buliminus Jouss- 

 eaumei, E. A. Smith, Proc. Malac. Soc, Vol. I., part 4, p. 142 

 (1894). 



Testa oblonga, clause rimata (rima obliqua, basi arcuata), Candida, 

 statu omnino recenti verisimiliter pallide luteotincta, solidiuscula, 

 nitida. Spira conideo-oblonga, apice minuto, obtusiusculo, laevigata. 

 Anfractus 7^ convexiusculi, regulariter crescentes, sutura parum 

 profunda discrefi, superiores confertim oblique costulati, sculptura in 

 sequentibus debiliore, in inferioribus obsolescent! et proeterea lineis 

 spiralibus numerosis indistinctis sub valida lenti passim impressa; 

 ultimus postice convexus, ad dextram excentricus, versus aperturam 

 breviter ascendens, circa rimam impressus et obtuse subangulatus. 

 Apertura fere recta, superne oblique lunata, irregulariter subovata, 

 ad dextram excentrica, ad marginem columellarum leviter oblique 

 rectiuscula, extu.s valde convexa. Peristoma crassum, callosum, 

 continuum, valide labiatum, planiusculum, la:um, undique reflexiim. 

 Columella oblique recta, subsinuosa, intus plica valida in dentum 

 acutum desinenti niunita. Margines approximate callo crasso 

 juncti. 



Long. 21, lat 10^, long, apert. (perist. incluso) 1"; long, ejusd. 

 (periston), excluso 0^); diani. ejusd. (peris torn, incluso) 8 ; diam. 

 ejusd. (sine peristomate) 4^ mill. 



Mountains of Yemen, above Aden, Southern Arabia (Dr. Jous- 

 seaume). 



