from the inner or medlan incisor, o-wing to intervenlng s\velHiig of 

 the jaw. A section of the diseased left ramus of the lower jaw 

 showed the matrices of the canine and lašt molar in a healthy stata 

 in the closed alveolar cavities. 



The irritation had extended to the ieft suhmaxillary and sublin- 

 gual glands, which were much enlarged. Both tonsils were ulcerated. 

 Both pleurae, but particularly the left, were partly closed by old ad- 

 hesions, which had obliterated the divisions of the lobes of the lungs. 

 Only one small portion of the pulmonary tissue was Consolidated by 

 inflammation ; it was about the size of a walnut, and situated in the 

 lower lobe of the right lung, close to an adhesion of the pleura, but 

 there were no tubercles developed in any part of the lungs. 



A few old adhesions bound the spleen and omentum to the walls 

 of the abdomen ; all the other viscera of the abdominal cavity were 

 healthy. The most remarkable morbid appearance was found upon 

 the upper surface of the posterior lobe of the right hemisphere of the 

 brain, where a circumscribed depression of two convolutions ^vas 

 formed, to which the dura mater strongly adhered, by the medium of 

 a yeUovvish firm lymph ; but there wa3 no superficial ulceration of 

 the cerebral substance. 



With regard to the normai anatomy, I may at present add to the 

 fuU descriptions that have been published of the dissections of 

 younger Chimpanzees, that in this nearly adult individual the laryn- 

 geal pouch extended over the front of the neck, beneath the platysma 

 myoides, as far down as the left axilla, passing there beneath the 

 upper border of the great pectoral musele. 



The continuation of Mr. Loveli Reeve's paper on new species of 

 Pleurotoma was then read : — 



Pleurotoma delicata. Pleur. testd suhulatd, tenui, hyalind. 



iransversim minuti et creberritrie elevato-striatd, aperturd brevi ; 



pellucido-albd, aurantio pallidissimi maculatd. 

 Hab. Lord Hood's Island, Pacific Ocean ; Cuming. 



Pleurotoma axis. Pleur. testd recto-acuminaid. inferne contractd, 

 anfractibus superni bicarinatie, infra iransversim exiliter liratis, 

 aperturd oblongn, siim profundo, albidd, aurantio -fusco subindi- 

 stincti tinctd. 



Hab. Philippine Islands ; Cuming. 



Pletjkotoma crebriplicata. Pleur. testd ovatd, inferni ventri- 

 coso-sinuatd, anfractibus concentrice crebrij)licatis. iransversim 

 crebriliraiis, aperturd patuld ; albidd, aurantio-fusco profuse va- 

 riegaid. 



Hab. Bolinao, Island of Luzon, Philippines (found under stones at 

 Io\v -Nvater) ; Cuming. 



Pleurotoma rosaria. Pleur. testd ahbreviato-subulatd, basi 

 truncatd, anfractibus concentrice plicaiis, Itevibus, aperturd brevi, 

 vivide coccineo-rosed, anfractuum parte supremd albizonutu. 



Hab. ? 



