498 DR. R. O. CUNNINGHAM ON THE REPTILES, 
62. ALLORCHESTES PATAGONICUS, n. sp. (Pl. LIX. fig. 14.) 
A single specimen of an Allorchestes, apparently undescribed, was taken by me in a 
freshwater stream in the neighbourhood of the Chilian settlement of Punta Arenas (Sandy 
Point), in the Strait of Magellan. Unfortunately it is considerably injured; so I abstain 
from describing it, and content myself with bestowing on it the above provisional name. 
63. ATYLUS? BATEL. n. sp. (Pl. LIX. fig. 9.) 
Cephalon not produced into a rostrum. Eyes oblique. A mesial dorsal carina. Last 
segment of pereion, and first four of pleon, produced into dentiform processes. 
Of this species, which appears to be new, and which I have named after Mr. Spence 
Bate, to whose kindness I am indebted for information as to sessile-eyed Crustacea, a 
single specimen from Possession Bay, Strait of Magellan, is in the collection. 
64. ATYLUS HUXLEYANUS, Bate. 
Taken in the Strait of Magellan. 
65. THEMISTO ANTARCTICA, Dana. 
Taken in numbers in the towing-net between the river Plate and the Strait of Ma- 
gellan, during a calm which succeeded a violent gale, in November 1867. : 
66. IPHIMEDIA NORMANT, n. sp. (Pl LIX. fig. 7.) 
Cephalon produced into a sharp-pointed rostrum. First three segments of pleon 
having a sharp-pointed tooth on each lateral margin. Eyes subreniform. Superior 
and inferior antennæ of nearly equal length. Colour purplish. Length 4 lines. 
One specimen of this species, named in honour of the Rev. A. M. Norman, was dredged. 
off Elizabeth Island in February 1867. | 
67. CAPRELLA DILATATA, Dana. 
Taken in numbers on the screw of H.M.S. * Nassau” in August 1867. 
ISOPODA. 
68. SEROLIS ORBIGNIANA, Aud. et Edw. 
Very abundant in the neighbourhood of Punta Arenas, Strait of Magellan. 
69. SEROLIS GAUDICHAUDII, Aud. et Edw. 
Dredged in the Bay of Arauco (Chili), in November 1868. 
70. SEROLIS CONVEXA, n. sp. (Pl. LIX. fig. 3.) 
Most nearly allied in form to 5S. planus, Dana. Body very convex, much more so 
_ than in any of the other species of the genus with which I am acquainted. A pro- 
 minent carina along the mesial line. Two last segments of pereion distinctly nar- 
rower than those which precede them. Last segment of pleon more elongated than 
