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MR. R. H. BURNE OX THE ANATOMY OF THE [May 25, 



smaller and with less strongly developed accessory sacs, the upper 

 (ethmoidal) one being represented by a mere recess above the 

 hinder part of the rosette, and the lower (lachrymal) extending 

 forward only as far as the root of the maxillary process of the 

 palatine. 



Neither of the sacs seems to be within reach of the direct effects 

 of the movements of the jaws. 



The rosette is not so strong and definite as in the Perch. It is 

 of the usual oval type and consists of about 30 laminfe, each with 

 a well-foi-med, almost claw-shaped linguiform process. 



Caproid^. 

 Capros aper. 



The nostrils lie in a similar position to those of the Perch, the 

 anterior within an area of smooth skin, the posterior closely 

 surrounded by scutes (text-fig. 207, B). 



The anterior nostril is a small and simple oval apertui-e, with its 

 long axis vertical ; the posterior, which is four or five times as large 

 as the anterior, is pear-shaped, with its swollen end directed 

 forwards. The bridge between the two is less than the length of 

 the posterior nostril in breadth. 



Text-fig. 207. 





Capros aper. 



A. Left olfactory organ, from the side. 



MD. position of the coronarj' border of the mandible 

 when the mouth is shut. 



B. Surface-view of the nostrils. 



The nasal cavity is disposed much as in the Perch, but the 

 rosette is relatively smaller and the lachrymal accessory sac larger 

 and far more dilated ventrally towards both the head of the 

 maxilla and the hinder end of the lachrymal scute. 



The ethmoidal accessory sac is comparatively small, being a 

 small forward extension of a general dilatation of the olfactory 

 chamber above the rosette. It probably is not of much semdce as 



