teahsonia. 



117 



it differs in size aud mode of coloration. In S. avanum, too, 

 the litiguit'orin projection of the peristome is vertical, not as in the 

 present species horizontal. The coloration, too, is peculiar, the 



Fig. 20. — Pearsonia hlmmocnsis. 



fulgurate stripes above the peripheral band being much more 

 open or more obtusely bent thiiii in the narrow or more acutely 

 angled bands below it." (Theohnld.) 



The specimen now figured is the type in the British Museum, 

 received from Theobald. The species has hitherto remained 

 uufigured. 



165. Pearsonia bitubifera, Theobald. 



Spiraculum hituhiferum, Theobald, J. A.S. B. xlv, part 2,1876, 



p. 187. 

 Pterocycliis {Sjuractdum) bituhiferus, Nevill, ILind List, i, 1878, 



p. 204. 

 Pearsonia {Pearsonia) bitubifera, Kobelt, Das Tierriech, Lief. 16, 



1902, p. 173. 

 Pearsonia tranvancorica bitubifera, Kobelt, C(nich.-Cab., Cyclo- 



phoridae, ii, 1913, p. 973. 



Original description : — " Testa depressa, late umbilicata, apice 

 depresso, sutura profunda, anfract. 5 convexis, ultimo ])rope 

 tubulum pauUo ascendente, inde descendente. Epidermide 

 scabriuscula spiraliter striata; colore albido, transverse vix 

 subfulgurate castaneo strigato. Perist. siiuplici, expansiusculo, 

 recurvato, prope suturam alam formante, tubulo brevissimo sursum 

 spectante instructo. Tubulo suturali recurvato ab apertura S nnn. 

 distante. Apertura obliqua. 



" Diam. max. (peristomate incluso) 18'30, diam. min. l-l-OO, 

 alt. 7-00, apert. 7*80 mm." {Theobald.) 



Hah. Burma : lihamo. 



Pig. 21. — Pearsonia bitubifera. 



" This remarkable species differs from most others in possessing 

 a distinct tubular wing at the mouth which somewhat recalls the 

 same feature in Pi. albersi, only the tube is more free and open. 



