4/8 MR. E, A. SMITH ON NEW SHELLS. [JunC 15, 



On examining the mouth there was no trace of any sublingual or 

 gular pouch ; on the contrary, the freenum lingucB was well developed 

 in its ordinary position. But the oesophagus, for the greater part of 

 its course in the neck, though stopping short considerably of its 

 entrance into the thoracic cavity, was much dilated, so that by 

 blowing it up with a blowpipe a large distention of the neck took 

 place, confined, however, to the upper two thirds, or thereabouts, of 

 the neck — the oesophagus, which, as usual in the Otididae, develops 

 no crop, being in the rest of its course, till it entered the stomach, 

 of very much smaller calibre. 



On inquiring of Mr. Bartlett and the keeper, J. Church, whether 

 they had ever witnessed any display on the part of this bird, they 

 both told me that during the last two summers (1878, 1879) it had 

 " shown off." But this display did not take place in the same way as 

 in E.australis, as depicted and described by Dr. Murie (P. Z. S. 1 868, 

 pp. 474, 47.'>, pi. xxxvi.) ; for there was none of that downward dis- 

 tention of the oesophagus, and consequent trailing of it on the ground, 

 that is so marked a feature in the showiug-off of that species ; ou 

 the contrary, the distention of the oesophagus during display in E. 

 denhami is lateral, the neck being immensely puffed out on both 

 sides in a globular way, and so resembling when seen from in front, to use 

 Mr. Bartlett's words, "a lady's muff." In E, australis, it must be 

 remembered, there is a similar dilatation of the oesophagus, extending, 

 however, in that species, over a larger extent of its course, so that 

 " before dissection, by filling its cavity with air, the lower portion 

 of the dilated oesophagus protruded downwards considerably in front 

 of the symphysis furculce, and formed the depending portion of the sac 

 which was so conspicuous in the living animal" (Garrod, P. Z. S. 

 1874, p. 473). 



6. Descriptions of twelve new Species of Shells. 

 By Edgar A. Smith. 



[Received June 16, 1880.] 



(Plate XL VIII.) 



Of the species here described, all, with the exception of the 

 Trophon and the Helix, are in the British Museum ; tlie latter are 

 in the collection of Dr. J. Percy, F.R.S. 



CoNus coNSANGuiNEus. (Plate XLVIII. fig. 1.) 



Testa solida, suhponderosa, alba, dilute fusco zonata, epidermide 

 crassa dense lamellosa induta. Spira breviter conica, ad apicem 

 pallide rosea. Anfractus circiter 10, declives, sutura irreyulari 

 discreti. Anfr. ultimus superne rotunde angulatus, deinde leviter 

 convexus, in medio levissime constrict^s, transversim undulatim 

 rugose siriatus, versus basin oblique sulcatus, i?iterstitiis inter 



