Mr. W. King on some Shells and other Invertebrate Forms. 233 



5. The Bovine Antelopes have the muffle moderate, with a 

 small naked moist muzzle under the nostrils. 



Boselaphus. Horns lyrate, thick at the base on the pro- 

 duced upper edge of the frontal bone. Tear-bag covered with a 

 tuft of hair. B. Bubalis and B. Caama. 



Damalis. Horns lyrate, tapering. Tear-bag naked. * D. lu- 

 natus, ** D. senegalensis, D. Koba, D. pygarga, D. albifrons, 

 and D. ? Zebra. 



All these species, except Gazella Dama and G. mohr, Scopho- 

 phorus montanus, Capricornis sumatrensis and C. crispa, Ma- 

 zama americana, Oryx Biessa and Damalis albifrons, are in the 

 British Museum collection. 



XXVI. — An Account of some Shells and other Invertebrate Forms 

 found on the coast of Northumberland and of Durham. By 

 William King, Curator of the Newcastle Museum*. 



Most of the objects treated of in this paper have been obtained 

 at different times from the cobles and the decked boats which 

 frequent the fishing-grounds between the Dogger-bank and the 

 coast stretching from the Tweed to the Tees ; the remainder were 

 got during a dredging excursion in a decked fishing-boat on some 

 of the same grounds in the latter part of last June. 



Though I was at sea from Monday till Friday, yet in conse- 

 quence of the extremely unfavourable state of the weather for the 

 greater part of the time, the dredge was not put down more than 

 five times ; it will therefore be readily presumed that my dredging 

 operations were not so successful as could be wished. 



At every haul of the dredge I was particular in noting the dif- 

 ferent kinds of objects brought up, the depth of water, and the 

 nature of the sea-bottom. 



The dredge was first put down (on Tuesday morning) in fifty 

 fathoms water, not far from the edge of the Dogger-bank, and 

 at about sixty miles east of Sunderland : here it brought up a 

 large number of dead shells in a chalky state, and a few living 

 objects : the former consisted of Pecten opercularis and Mactra 

 elliptica in abundance, several specimens of Mya truncata f, two 



* Read at the Sixteenth Meeting of the British Association for the Ad- 

 vancement of Science. 



t The specimens of Mya truncata closely resemble the elongated form 

 found close in shore : finding it at so great a depth demands something more 

 than a passing notice, since I am not aware that this variety has ever been 

 found alive elsewhere than in shallow water. Were it certain that the elon- 

 gated form did not live in deep water, we might then safely conclude that 

 the sea-bottom which was dredged had subsided since the Myas, found on 

 it, were living. Since writing the above I find it stated by Professor E. 



Ann. if Mag. N. Hist. Vol. xviii. S 



