On the Generic Position of Benson'' s Helix hyba. 55 



does occur. I obtaincl my specimens in May and June, and 

 they bore numerous gonophores. 



In studying Wriglida and the allied genera one cannot help 

 noticing their resemblance to Calyptoblasts. The family 

 Bougaiiivilliidse, to which they belong, is practically alone 

 among Gymnoblastea in possessing a single verticil of filiform 

 tentacles surrounding a conical hypostome. All the Calypto- 

 blasts have this conical hy[)Ostome and single verticil of 

 filiform tentacles. Further, many of the genera of Bougain- 

 villiidoe have quite a distinct protective cup for the hydranth, 

 resembling greatly the hydrothecaof theCalyptoblast. Indoed, 

 were it not for the fact that these genera are classified with 

 the Gymnoblastea, their protective cups would receive the 

 name of hydrothccge. 



'I'hese facts point to the conclusion that a close relationship 

 exists between the family Bougainvilliidae and the suborder 

 Calyptoblastea. The Bougainvilliidge, perhaps, form a 

 transition-stage between the suborders Gymnoblastea and 

 Calyptoblastea. 



XI. — On the Generic Position of Benson'' s Helix hyba and 

 the Siiuilariti/ of its Anatomi/ to that of Kliasiella vidua, 

 W. T. Blanford. By Lt. -Colonel H. 11. GODWiN-AuSTEN^, 

 F.R.S. &c. 



Ever since the discovery of this species about 1860 it has 

 been impossible to locate it in any Indian genus without 

 considerable doubt. It is apparently very rare. I have never 

 come across it in the field, and 1 do not thiidc it is to be 

 found in many collections. I am informed by Mr. S. F. 

 Harmer, of the University Museum of Zoology, Cambridge, 

 that two specimens (Benson's types) are in the MacAndrew 

 collection. Fortunately I have recently discovered two 

 S|)ecimens among some other species preserved in spirit by 

 Mr. VV. Theobald, marked "Chamba," a small State in 

 the N.W. Himalaya, S.E. of Kashmir Territory. The one 

 from which the subjoined description was taken was in a 

 very good state of preservation. All we knew with any 

 certainty was that it belonged to the Zonitid*, Mr. Theobald 

 having noted the presence of the mucous gland at tiie extre- 

 mity of the foot at the time of capture. 



Mr. Benson described the shell in the Ann. & ^lag. Nat. 

 Hist. ser. 3, vol. vii. (b'eb. 1801), in his usual excellent way, 

 and goes on to say : — 



