]98 Si/stematic Arrangement of the Marmosets. 



I'vcn split ilic norinal-sizoil species of HapaJc into two p;ionps, 

 laroely on nccount oi: the l.wo sliar|)ly difViMontiatcd forms of 

 coloration found in it, and would also distinguish the Pygmy 

 ]\larnioset as a special genus. 



Tims, apart from Callimico, the wliole may bo classified as 

 follows : — 



A. TiOwcr teotli normal, the canines much longer than 

 tlio incisors. 

 (I. Fin^nns elongated. Tail (nt least its upper side) 

 and forearms golden yellow. Skull dolicho- 

 cephalic. Teeth largo ' 1. Leontocebus. 



Species : chrysovielas (type), leoninus, rosalia. 

 h. Fingers normal. Skull more brnchycephalic. 

 Teeth smaller. 

 rt'. Tail and forearms uniformly black *. Face 



hairy as usual 2. Myfta.r. 



Species: mystax (tj'pe), fipiodatiis, bbintschlii, chrysopygus, 

 devillci, fiuvifrons, firscicnlHi^, graellsi, (/rueoventrif^, il/u/eri, 

 imperator, iabiatus, hiyo77otus, leucoycmjs, 7}iela7ioIeiHi(s, jtit- 

 das, niyricol/ts, 7iignfro7is, pilenttis, r>tji7)ia7ms, riijit'enfer, 

 I'ufouiyfr. tho77ia-nf triparfitus, 7n'sulut, tceildelli. 

 l\ ForeaiMus and hands white or yellowish. F'ace, 

 or at least its sides, short-haired or naked. 

 rt\ Ears of normal length. Tail dark proxi- 



mally. at least above, lighter terminally . . 3. Se7iioceb7i$. 

 Species: bicolor (type), kucopus, mai'ti77si, i7ietieulosus. 

 P. Ears short. Tail red pro.vimally, black ter- 

 minally 4. CE(h'po7nidas. 



Species : cedipus (type), yeoff7'oyi, snlaquiensis. 



J'.. Lower teeth modified, the cauines little longer 

 than the incisors, 

 r Size about as in other marmosets. Mandible high 

 in proportion to its length, the condylar process 

 upright. P* with an internal lobo. 



C-. Ears untufted. Tail wholly black 5. Mico. 



Species: arc)e7it(dus (type), ?>»///<?, leuci'ppe, 7i7elanur7i/>. 

 (P. JEars with long tufts on or round them. 1'ail 



ringed with white or yellowish C. Hapale. 



Species : Jacchus (type), albicollis, aurita, rJnyxofeueo,^avi'cepx, 

 hu77iC'rcdifer, Jo7dan7\ Icucocephahi, penicilldta, !<a7it,a7'e7nen»is. 

 d. Size much smalltr. Mandible lower in propor- 

 tion to length ; condylar process slanted back- 

 wind.-'. P' without inteinal lobe 7. Cehiella. 



Species : pyg77i(va (typo). 



Three white species, however, whose original derivation 

 may or may not have been due to albinism, will not fall 



• Hands sometimes yellow, generally black. 



