ZOOLOGY. 521 



the ribs and zygomatic arches, and the size of the teeth. The molars 

 of T. senegalensis are especially remarkable on account of the large size 

 and the extension of the series forwards, while in the American spe- 

 cies they are much smaller and the series terminate considerably in 

 froutof the antorbital foramina or under the zygomatic processes. There 

 can be no question that the three species thus recognized at least are 

 perfectly distinct. (I) Under the African species for which the name 

 Manatus senegalensis is retained, the Trichechus manatus of Linnaeus 

 and the Manatus nasutus and M. Vogelii are embraced. (2) The com- 

 mon American species is called Manatus latirostris, and to the species 

 for which this name is retained are referred the Manatus americanus 

 and M. aiistralis of most authors, but not the T. australis of Shaw. (3) 

 The third species is the Manatus inunguis. Individuals of the species 

 have been known but have been confounded by previous authors with 

 the common American species. (Zool. Jahrbiicher, 1886.) 



NECKOLOGY OF ZOOLOGISTS, 1886. 



Becher (Edward), died November 11, 1886, at Vienna; an ento- 

 mologist, and assistant in the Imperial Museum. 



Benecke (Berthold), died February 27, 1886, aged forty-three; an 

 ichtliyologist and pisciculturist. 



BoECK (EuGEN von), died January 30, 1886, in Cochabamba, Bolivia; 

 an ornithologist. 



Busk (George), born 1807, died August 10,1886; especially notable 

 for his labors on the Polyzoans. 



CoBBOLD (T. Spencer), born 1828 in Wortham, Suffolk, died March — , 



. 1886, at London ; an eminent helminthologist. 



Cole (William Willoughby), Earl of Euniskillen, born 1807, died 

 ]Sovember 21, 1880 ; well known for his eoUection of fossil tishes. 



Cornet (Francois Leopold), born at Givry, Belgium, February 21, 

 1834, died January — , 1886 ; best known for his work ou the creta- 

 ceous formations. 



Fischer (Gustav A.), died November 11, 18S6, at Berlin ; an orni- 

 thologist and African traveler. 



Fischer (Heinricii Leopold), born , died February 1, 1886; 



well known for his contributions to the knowledge of orthopterous in- 

 sects. 



GiRARD (Maurice), died August — , 1886, aged sixty-four; an emi- 

 nent French entomologist. 



Guiscardi (Guglielmo), born at Naples, March, 1821, died at Naples, 

 December 11, 1885; a palaeontologist. 



Haller (Gustav), died May 1,1886, at Bern; well known for his 

 studies on the mites. 



Harold (Baron Edgar von), died August 1, 1886, at Munich ; a 

 celebrated coleopterist. 



