604 INDEX GENERUM MAMMALIUM. 
Rhagodon—Continued. 
Extinct. Based on ‘el m+ de un individuo ya bastante viejo.’ 
Rhagodon: p&&, Pay os, a berry, a grape; 65@v=ddo0vs, tooth. 
Rhamphocetus Giocer, 1841. Cete, Physeteridze. 
Hand- u. Hilfsbuch Naturgesch., I, pp. xxxiv, 170, 1841; THomas, Ann. & Mag. 
Nat. Hist., 6th ser., XV, 191, Feb. 1, 1895. 
New name for Delphinorhynchus Blainville, 1817. Includes Delphinorhynchus coro- 
natus, from the Arctic Ocean, off Spitzbergen. 
Rhamphocetus: &puqoosz, a curved beak; x5roc, whale 

an equivalent of Delphi- 
norhynchus. 
Rhaphocerus (see Raphicerus). Ungulata, Artiodactyla, Bovid:e. 
Rhegnopsis Corr, 1896. Cete, Baleenidee. 
Proc. Am. Philos Soc., XXXV, No. 151, p. 145, Aug., 1896. 
New name for Protobalena Leidy, 1869, which is preoceupied by Protobalena 
Du Bus, 1867, another genus of Balzenidee. 
Extinct. 
Rhegnopsis: pny v 66, to break asunder; wzs, appearance—in allusion to ‘the pres- 
ence of a Meckelian fissure, which extends deeply into the mandibular ramus.’’ 
Rheithrosciurus Gray, 1867. Glires, Sciuridee. 
Ann. & Mag. Nat. Hist., 3d ser., XX, 271-272, Oct., 1867; Tuomas, Proc. Zool. 
Soc. London, 1897, 933. 
Rhithrosciurus LYDEKKER, in Flower & Lydekker's Mamm., Living & Extinct, 
452, 1891. 
Type: Sciurus macrotis Gray, from Sarawak, Borneo. 
Rheithrosciurus: ptibpov, channel; + Sciwrus—‘groove-toothed squirrel,’ from 
the seven to ten minute parallel vertical grooves running down the front face 
of its incisors. (FrowER & LYDEKKER. ) 
Rheitrodon (see Reithrodon). Glires, Muridee, Cricetine. 
Rhesus (subgenus of Macacus) Lesson, 1840. Primates, Cercopithecidee. 
[Revue Zool., Paris, II, 70, Mar., 1859—nomen nudum, full genus. ] 
Species Mamm., 49, 95-96, 1840; Nouv. Tableau Régne Animal, Mamm., 5, 1842. 
Species, 5: Macacus rhesus Desmarest (type), from the banks of the Ganges, India; 
M. nemestrina Desmarest, from Java and Sumatra; M. libidinosus I. Geoffroy, 
from ; M. maurus Cuvier, from Cochin China; and M. melanotus Lesson, 
from Madras, India. 

Rhesus: Rhesus, in Greek legend, a Trojan prince. The generic name is evi- 
dently taken from the specifie name, but Audebert, in applying it to the 
species, stated that it had no signification. (Hist. Nat. Singes Makis, 1800, 
Fam. 11°, sec. 1.) 
Rhinalazon GrocGER, 1841. Primates, Cercopithecide. 
Hand- u. Hilfsbuch Naturgesch., I, pp. xxvii, 36, 1841; THomas, Ann. & Mag. 
Nat. Hist., 6th ser., X V, 190, Feb. 1, 1895. 
New name for Nasalis Geoffroy, 1812. Type: Rhinalazon nasica (F. Cuvier) = 
Nasalis larvatus (Wurmb), from Borneo. 
Rhinalazon :* pis, Hiv 6s, nose; dAaCov, wanderer, vagabond—i. e., a * long-nosed 
wanderer,’ from its most striking characteristics. 
Rhinaster WAcaLEn, 1830. Insectivora, Talpidee. 
Nat. Syst. Amphibien, 14, 1830. 
Type: Sorex cristatus Linn:eus, from Pennsylvania. 
Name antedated by Condylura Iliger, 1811. 
Rhinaster:; pis, Hivos, nose; dórnp, a star—in allusion to the circle of promi- 
nences at the extremity of the nose. 

*The prefix Rhin- ordinarily requires no explanation when it indicates simply a 
large nose. 
ned 
