398 Mr. J. E. Gray on a new species of Marmozette. 



19. 'Epidt.sdb.vm (Spathium) refractu?n ; folio carnoso ovato-oblongo 

 coriaceo obtuso, pedunculo elongate spathis pluriinis falcatis ob- 

 tusis distinctis vaginato, racemo brevi 4 — 5-floro cernuo, floribus 

 carnosis, sepalis oblongis acutis dorsali refracto, jjetalis ovalibus 

 subconformibus, labello subrotundo coidato trilobo basi biverrucoso 

 per medium calloso, laciuia intermedia abbreviata truncata. 



Caraccas (Linden, no. 61 S). 



A very singular plant, with six or seven herbaceous, equitant, di- 

 stinct falcate spathes on a peduncle about nine inches long. The 

 sepals are about three-quarters of an inch long. 



20. Epidendrum (Euepidendrum) aqitnticum ; caule ancipiti ramoso, 

 foliis lineari-oblongis acutis panicula simplici paucitiora (aut ra- 

 cemo) paulo brevioribus, sepalis oblongis petalisque linearibus ob- 

 tusis, labello carnoso alte cordato cucullato basi ecalloso, clinandrio 

 utrinque bidentato. 



Brazil (Gardner, no. 4344) ; an aquatic. 



The branches of this are four or five inches long, the leaves from 

 half an inch to two inches. The flowers small and green. 



XLIX. — On a new species of Marmozette in the British Museum 

 Collection. By John Edward Gray, Esq., F.R.S. 



To Richard Taylor, Esq. 



My dear Sir, 

 Among the new INIammalia recently received by the British 

 Museum is a species of Marmozette, which is very interesting- 

 as coming from jNIexico, all the species hitherto described ha\-ing 

 been found in the Brazils. I have named it, fi'om the peculiar 

 coloui'ing of its under side, the Bed-bellied Marmozette. 



Jacchus rufiventer. 



Black, grisled by the white tips of the hair, which are more abun- 

 dant on the loins and thighs; chest, inner side of the legs, 

 under side of body and spot on the middle of the crown of the 

 head chestnut-broT\'n ; tail elongated, black ; ears large, not 

 penciled. 

 Inhab. Mexico. 



This species is veiy distinct in its coloration from any other 

 of the described species. T was at fii'st inclined to regard it as 

 a variety of Jacchus melaniirus, but that species is described as 

 brown and fulvous beneath, and on comparing the longer de- 

 scription of the species given in Kuhl with om- animal, it is evi- 

 dently distinct. 



Yom-s truly, 

 John Edward Gray. 



