30 ZOOLOGY OF THE VOYAGE OF THE BEAGLE. 
ray of the second dorsal. Free rays rather stout, with their tips somewhat dilated and ap- 
proaching to spatuliform ; in length about two-thirds that of the pectorals. Ventrals a trifle 
longer than the first or longest of the free rays. 
CoLour.—“ Above mottled brilliant tile red; beneath silvery white.’—D. Mr. Darwin is rather 
doubtful whether by the above description, he meant that the entire fish was brilliant red, or 
only mottled with red upon some obscure ground. 
Habitat, Galapagos Archipelago. 
Taken at Chatham Island, in the Galapagos Archipelago, and decidedly dis- 
tinct from all the species described by Cuvier and Valenciennes. From P. 
strigatus it differs in the finer granulations of the cheeks, less obtuse and more 
deeply notched snout, smooth scales, and absence of a second lateral line ; from 
P. Carolinus in the want of a transverse groove on the cranium, and in the fin-ray 
formula, but it resembles this species in the dilated tips of the free rays; from 
P. punctatus as pointed out in the description ; from P. éribulus in the want of 
the spine on the suborbital, and in its much shorter pectorals. These fins indeed 
are shorter than in any of the above-mentioned. 
As all the species described in the “Histoire des Poissons,” are found on 
the Atlantic side of America, the geographical range of this genus is extended 
to the Pacific by the discovery of the present one. 
Famity—COTTID/. 
AsPIDOPHORUS CHILOENSIS. Jen. 
Puate VII. Fic. 1. Lateral view twice nat. size. 
Fig. 1a. Dorsal view nat. size. 
Fig. 14. Lateral view nat. size. 
A. corpore elongato, antice octagono, postice hexagono; vomere et ossibus palatinis 
dentibus distinctis instructis ; maxillis subequalibus ; rostro ultra fauces haud pro- 
ducto; mento et membrand branchiali cirratis: pinnis dorsalibus discretis ; prima 
radits gracilibus. 
B.67 D.6—7; A: 83. ©, M12 P14 NV; d2; 
Long. unc. 2. lin. 7. 
Form.—More elongated than the A. cataphractus, which it somewhat resembles in general appear- 
ance. Anterior portion of the body octagonal, and the posterior, or all beyond the second 
* dorsal and anal, hexagonal. Head equally depressed as in that species; but its breadth less, 
being only one-fifth of the entire length, caudal excluded. Length of the head rather less than 
