234 Geological Society. 



2. " The Cetacea of the Suffolk Crag." By R. Lydekker, Esq., 

 .B.A., F.G.S., &c. 



This paper commencecl with notices of previous contributions to 

 the subject by Sir R, Owen, Prof. Ray Lankester, Prof. Huxley, and 

 Prof. Flower. In the preparation of a catalogue of the si^>ecimens 

 in the British Museum, the Author had had occasiooi to examine the 

 collection of Cetacea from the Crag, not only in that Museum, but 

 also in the Museum of Practical Geology, that of the Royal College 

 of Surgeons, and in the Ipswich Museum, besides visiting the collec- 

 tions at Brussels. In consequence several additions to the fauna 

 and also numerous emendations of specific names were noticed in 

 the paper now laid before the Society. Prof. Ray Lankester's 

 views as to the Diestian affinities of the English-Crag Cetacea were 

 confirmed by this comparison. 



Detailed notes on the specimens examined and the species identi- 

 fied were given. The following list of the species believed to be 

 represented in the various coUectioas mentioned was given at the 

 conclusion of the paper : — 



Bal/entii/E. 



Baljena affinis, Otten. 



priiiiigenia, van Bcneden. 



insignis (I'flw Benedeii). 



balainopsis {van Benedm). 



IMegaptera affiiiis, van Benedcn. 



siniilis {van Beneden). 



ininutus {van Beneden). 



Balsenoptera definita ( Owen). 

 Guropi, van Beneden. 



Balsenoptera borealina, van Beneden, 



eraarginata {Owen). 



Oetotheriuni Brialmonti {van 



Beneden). 



cTiibium {van Beneden). 



Hupsclii ( v<in Beneden). 



brevifrons {van Beneden^. 



Herpetocetus scaklien&is {van 



Beneden^. 



Physeterid^, 



Chonezipbius planus {Owen). 



Packardi, Lankester. 



Mesoplodon longirostrig {Cuviery. 



EucetiTS amblyodou, dn. Bns. 

 Homocetus Villersi, du Bns. 

 Balajuodon physaloides, Owen. 



Physodon grandis (ffo Z>«.s). I tenuirostris ( Owew) 



fusiformis? {du Bns). | gibbus {Owen). 



Hoplocetus crassidens, Gcrvais. j angusttis (Owen). 



borgehoutensis, <?cry«A'!. | angulatuB {Owen). 



crasaidens ?, Gervais. j comT[>ressuB {Hnxlei/). 



Hyperoodon, sp. ; Floweri, Canham, MS. 



Chonezipbius planirostris ( C?( I'/er). | 



Squalodontid.e. 

 Sqiialodon antverpiensie, van Beneden. 



Delpiiinid^. 



Orca citoniensis, Capellmi. I Delphinoid genus, non det. 



Globicephalus uncidens {Lankester), | 



3. " On a Jaw of Hyotherium from the Pliocene of India." By 

 R. Lydekker, Esq., B.A., F.G.S., &c. 



Colonel Watson, the Political Resident in Kattiawar, had recently 

 sent to the Author a fragment of a left maxilla with the three true 

 molars from Perim Island, in the Gulf of Cambay. The specimen 

 belonged to Hyotliermm, and apparently to an undescribed species, 



