143 



\vith the form of the infciior mandible. The lower purt of the trun- 

 cated surface is produced in a pointed forin, and is supported beneatli 

 by a small horny plate. The vvhole length of the tongue is 3 inches; 

 its circumference 2^ inches. Along the niiddle of the flattened su- 

 perior surface there is a moderatcly deep and vvide longitudinal furrow, 

 on either side of vvhich there are from tvventy to twenty-five recurved 

 spines, but of a soft and yielcJiiig horny texture, measuring from 1 to 3 

 lines in length. These spines are arranged in an irregular alternate 

 series : the outer ones being the smallest; and these, indeed, mav be 

 considered a distinct row. At the posterior part of the tongue there are 

 tvvo groups of smailei recumbent spines directed tovvards the glottis. 

 The substance of the tongue is not muscular, but is chiefly composed 

 of an abundant yielding cellular substance vvith fat of an almost oily 

 consistence. It is supported by a long and thin concave cartilage, 

 articulated to the body of the os hyoides by a shallow ginglymoid joint, 

 allovving of a free motion. Excepting the straight hyo-glossi, the 

 museles all terminate at the base of the tongue. The tendons of the 

 forraer museles run along the under part of the lingual cartilage, and 

 expand to be inserted at its extremity, where a fevv fibres again 

 proceed forwards to the extreme point of the tongue. 



" No Entozoa were met vvith in the specimen dissected by me : 

 but Col. Sykes has been so obliging as to permit me to examine the 

 tapetoorms, before alluded to, vvhich he found blocking up the duo- 

 demim of the Flamingo dissected by him in Dukhun. 



" One of the specimens, together vvith a drawing ofit, is now on the 

 table. From the marginai disposition of the lemnisci and its general 

 habit, it evidently appertains to the true Tcp.nics, and from the struc- 

 ture of the head ranks among the rostellate species uith an armed 

 prohoscis. It does not accord vvith any of those described in the ' Sy- 

 nopsis Entozoorum ' of Rudoiphi, and is of so peculiar a form that I 

 feel no hesitation in characterizing it as foUovvs. 



"T^NiA LAMELLiGEKA. T(en. incrassūla, capite subgloboso ; rostello 

 ajUndrico ohtuso ; colio nulio ; articulis brevissimis, marginibus 

 lateralibus dilatatis, rotundatis, utrinąue parum extantibus; sitper- 

 ficie utrdąue lined longiludinali leviter impressd ; lemniscis latera- 

 libus oppositis. 



"Longitudo corporis, 7 unc.j latitudo, .5 lin.5 crassities, I lin. 



"The segments are extremely numerous and short: they gradually 

 increase in breadth and thickness for about 3 inches from the head ; 

 as they approach the opposite end of the body they slightly diminish 

 in breadth, vvhile they increase a little in length, but retain the šame 

 thickness. Along the middle of both the plane surfaces of the body 

 the segments are separated by shallovv indentations, and it is only 

 tovvards the posterior extremity that the segments appear to overlap 

 each other from before backvvards ; but at the sides of the body the 

 posterior margins of the segments project abruptly from the surface 

 and form a series of semicircular ridges, commencing on both sides of 

 the body about a line's distance from the margin. On both margins 

 of each segment immediately anterior to these ridges there is a small 

 pyramidal cminence, perforated at the apex, through vvhich perforation 



