ZOOLOGY. 521 



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

 of T. sencgalensis are especially remarkable ou 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 

 frontof the autorbital foramina or under the zygomatic processes. There 

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

 perfectly distinct. (1) Under the African species for which the name 

 Manatus senegalcnsis is retained, the Trichechus manatus of Linna3us 

 and the Manatus nasutus and 31. 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 31. australis of most authors, but not the T. austraUs 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.) 



NECROLOGY OF ZOOLOGISTS, 1886. 



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

 mologist, and assistant in the Imperial Museum. 



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

 ichthyologist 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 — , 

 I88G, at Loudon ; an eminent helminthologist. 



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

 J^ovember 21, 1886 ; well known for his collection of fossil fishes. 



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

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

 ceous formations. 



Fischer (GusTAv A.), died November 11, 1886, at Berlin; an orni- 

 thologist and African traveler. 



Fischer (Heinrich Leopold), born -, died February 1, 1886; 



well known for his contributions to the knowledge of ortho])terous in- 

 sects. 



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

 nent French entomologist. 



GuisCARDi (Guglielmo), boru at Naples, March, 1821, died at Naples, . 

 December 11, 1885; a palfcoutologist. 



ETaller (Gustav), died May 1,1880, at Bern; well known for his 

 studies on the mites. 



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

 celebrated colcopterist. 



