1845.] Linnean Society. 235 



Dr. Horsfield, including some species not previously referred to it ; 

 the fifth has for its type Arg. Egesta ; the sixth includes the genus 

 Clothilda of M. Blanchard ; the seventh M. Boisduval's section Ma- 

 jores, with the addition of Latho?iia and some other species ; the 

 eighth comprises his Minoi'es, with the exception of one or two spe- 

 cies ; and the remaining species compose the genus Melitcea properly 

 so called. In all these sections Mr. Doubleday describes at length 

 the structure of the nervures and their nervules, and notices the 

 geographical distribution of the species. 



The paper was accompanied by a series of figures illustrative of 

 the neuration of the wings of various species. 



April 1. 

 E. Forster, Esq., V.P., in the Chair. 



Arthur Hill Hassall, Esq., was elected a Fellow. 



Read " Observations on two Malayan species of Senuiopithecus." 

 By Theodore Cantor, M.D., Civil Surgeon, Prince of Wales's Island. 

 Communicated by T. Horsfield, M.D., V.P.L.S. 

 , The Semnopitheci which form the subject of Dr. Cantor's paper are 

 Semn. cristatus, Horsfield, and a new species which Dr. Cantor names 

 and characterizes as follows : — 



Semnopithecus halonifer, nitide cinereo-nigrescens, crista occipitis cana, 

 abdomine subalbido, cauda subcinerea, facie auribus manibus pedibus 

 tuberibusque ischiatieis nigris, palpebris labiisque lacteis veluti halo- 

 nibus circumdatis : tarsis palpebrarum nigris, pbalangibus digitorum 

 primis membvana inter se junctis. 

 Juvenis : Pallidior, crista occipitis cinerea, facie nigro-caerulescenti. 

 Neonatiis : nitide fulvus. 



Of this species, which inhabits the jungle in troops of from five to 

 twenty. Dr. Cantor gives a detailed description, with an account of 

 its habits both wild and in a state of captivity, and details of the dis- 

 section of a young male, particularly as regards the stomach, which 

 presented, with some modifications, the same highly developed struc- 

 ture as the other species of the genus which have been examined. 

 It appears to be most nearly allied to Semn. Maurus, Horsf. 



Semn. cristatus, Horsf., is also a native of Prince of Wales's Island 

 and the opposite part of the Malayan Peninsula. Dr. Cantor com- 



