5. HYDRASPIS. 225 
5. Hydraspis radiolata. 
Emys radiolata, Mikan, Delect. Faun. Flor. Bras. pl. — (1820) 
Chelodina radiolata, Fitzing. N. Class. Rept. p. 45 (1826). 
Hydraspis 1 radiolata, Gray, Syn. Rept. p. 41 (1831). 
Platemys gaudichaudii, Dum. § Bibr. ii. p. 427 (1835). 
Hydraspis eaudichaudii, Gray, Cat. Tort. p. 40 (1844), and Sh. 
Rept. i. p. 57 (1855), and Ann. § Mag. N. H. (4) xi. p. 304 (1875). 
Carapace with a feeble vertebral keel; dorsal shields of half- 
grown specimens with radiating strie. Front lobe of plastron 
broader than hind lobe ; intereular shield at least as long as its 
distance from the abdominals ; ; suture between the pectorals shorter 
than that between the abdominals. Skin of upper surface of head 
divided into irregular shields; parietal bones above as wide as the 
diameter of the Soni mental barbels shorter than the diameter of 
the eye. Dark brown above; lower surface of marginals yellow ; 
plastron yellow, with a large subrhomboidal dark brown spot in the 
middle ; tympanum, chin, and throat yellowish, with small brown 
spots. Adult unknown. 
Brazil. 
a, Yg., spit. Bahia. 
6. Hydraspis rufipes. 
Emys rufipes, Spiv, Test. Bras. p.7, pl. vi. (1824). 
Rhinemys rufipes, Wagl. Syst. Amph. pl. iii. figs. xlii—lv. (1850). 
Hydraspis rufipes, Gray, Syn. Rept. p. 41 (1831), and Sh, Rept. i. 
p. 56 (1855). 
Platemys rufipes, Dam. § Bibr. ii. p. 433 (1835). 
Phrynops rufipes, Gray, Cat. Tort. p. 41 (1844). 
Carapace with a vertebral keel. Front lobe of plastron broader 
than hind lobe; intergular shield much shorter than its dis- 
tance from the abdominals; suture between the pectorals longer 
than that between the abdominals. Forehead and vertex covered 
with undivided skin; parietal bones expanded; mental barbels 
shorter than the diameter of the eye. Brown above, yellowish 
inferiorly ; throat and limbs rufous. 
Length of shell 25 centim. 
River Solmoéns, Brazil. 
7. Hydraspis wagleri. 
Platemys wagleri, Dum. § Bibr. ii. p. 422 (1835). 
Hydraspis w wagleri, Gray, Cat. Tort. p. 40 (1844), and Sh. Rept. i. 
p. 06 (1855). 
Carapace much elongate, much narrowed at both ends, not keeled. 
Plastron broader in front than behind ; suture between the pectoral 
shields shorter than that between the abdominals. Forehead and 
vertex covered with undivided skin. Shell rufous above, edged 
with yellow, yellow inferiorly ; upper surface of head and limbs 
