ox DEATHS IN THK GARDENS DURING 1912. 141 



(7) Mjoberg, Eric. — Studien iiber Mallophagen und Anoplui'en. 



Arkiv for Zoologi, Bd. vi. no. 13, 1910. 



(8) Westwood, J. 0.— Thesaurus, 1874. 



(9) Snodgrass, R. E. — The Anatomy of the Mallophaga. Occas. 



Papers Calif. Acad. Sci. 1899, vi. pp. 148-150. 



(10) Carpenter, G. H. & Mabel MacDowell.— The Mouth- 



parts of some Beetle Larvae (Dascillidse and Scarabseidse), 

 with special reference to the Maxillulse and Hypopharynx. 

 Q. J. M. S. 1912, vol. Ivii. part 4. 



(11) Enderlein, G. — Ueber die Morphologic, Gruppierung und 



systematische Stellung der Corrodentien. Zool. Anz. 

 xxvi. pp. 424-428, 1903. 



Postscri2)tum. 



Dr. W. T. Caiman has kindly drawn my attention to a memoir 

 in the ' Bollettino della Societa di Naturalist! in Napoli ' (vol. xxiv. 

 Ser, ii. vol. iv. anno xxiv.), published in 1911, and entitled 

 " Contribute alio Studio dei Mallofagi, Observazione sul Menoj^on 

 pallidum.^'' This paper unfortunately arrived in this country too 

 late for consideration. The author, Euclide Armenante, investi- 

 gates M. pallidum and finds that the " glands " and " ducts " are, 

 as I suppose, chitinous. The hypopharynx is not typical in this 

 species, but lends support to the homologies indicated above, and 

 appears to stand somewhere between Lcpmobothrium and such 

 forms as Trinoton, Niizschia, etc. 



11. Report on the Deaths which occurred in the Zoological 

 Gardens during 1912, together with the Blood-Parasites 

 found during the Year. By H. G. Plimmer, F.R.S., 

 F.Z.S., Pathologist to the Society. 



[Received and Read February 4, 1913.] 



On January 1st, 1912, there were 885 mammals, 2180 birds, 

 and 518 reptiles in the Zoological Gardens ; and during the year 

 506 mammals, 1346 birds, and 648 i-eptiles were admitted, 

 making a total for the year of 1391 mammals, 3526 birds, and 

 1166 reptiles. 



During 1912, 375 mammals, 817 birds, and 347 reptiles have 

 died: that is, a percentage of 26-9 for mammals, 23*2 for birds, 

 and 29*8 for reptiles. 



633 deaths out of the total of 1539 for the year occurred in 

 animals which had not been six months in the Gardens. It has 

 been found that after six months' residence in the Gardens the 

 percentage falls rapidly, so that it is assumed that by that time 

 the new animals have got over their journeys, or have died from 

 any diseases they may have brought with them, or have got quite 



