OLIGOSOMA. 245 



Plate XXVII, fig. 25, represents Homhronia fasciolaris, size of life. 



Fig. 26, an upper view of the head; 



Fig. 27, the profile ; and, 



Fig. 28, an under view of the same region. 



Fig. 29, the left hand, from above; 



Fig. 30, the same hand, from beneath. 



Fig. 31, a group of dorsal scales; 



Fig. 32, a group of abdominal scales. 



Figs. 26-32, are somewhat magnified. 



Genus OLIGOSOMA, Girard. 



Char. gen. — Cor pore suhcylindrico, hreviori, squamis modicia et striatis 

 cooperto ; duahus seriehus dorsualihus medianis majoribus. Gapite 

 sxdjquadrangido-pyramidali, de^resso ; naribus in lateribus skis. 

 Scutis supranasalihus nulUs ; parietcdihus separatis. Dentibus pcda- 

 tinis imllis. Palpehra inferiori disco pellucido praedlta. Apertura 

 auditoria antice suhdentlculaia vel simplici ; tympano plus minusve 

 prof undo. Memhris mod ids ; dkjitis utriusqm menibri quinque inae- 

 qualibus; palmis p)lantisque subtditer granidosls ; scutellis suhdigi- 

 taUbus trcmsversis, laevibus, Cauda longa, subcylindrica, et minu- 

 ente. 



Gen. Char. — Body subcylindrical, rather short, covered with mode- 

 rate and striated scales ; two middle dorsal rows largest. Head 

 subquadrangulo-pyramidal, depressed. Nostril lateral, in one plate ; 

 no supranasals. Parietals separated. Palate toothless. Lower eye- 

 lid with a transparent disk. Auricular aperture subdenticulated in 

 front, or simple ; tympanum more or less sunk. Limbs moderately 

 developed ; five fingers and five toes, unequal ; palms and soles 

 finely granulated ; subdigital plates transverse, smooth. Tail long, 

 subcylindrical, and tapering. 



gyx. — Oligosoma, Grd. in Proc. Acad. Nat. Sci. PMlad. November, 1857. 



OBSERV.-^This genus is intimately related to Mocoa, from which it 

 diflfers chiefly by its less-developed limbs, and the separation of the 

 parietal plates. The middle occipital is also distinct from either the 

 parietals or the latero-occipitals. 



