Feteromerous Coleoptera from Tierra del Fuego. 335 
tundato, postice angustato, lateribus rotundatis, angulis 
posticis fere rotundatis. Scutello transverso, brevi. 
Elytris thorace paululo latioribus, postice paulo ampliatis, 
leviter convexis, ad suturam depressiusculis, fortiter striato- 
punctatis, interstitiis parce subtiliter punctulatis. Pectore 
discrete fortiter punctato. Abdomine subtiliter discrete 
punctulato. Tarsis obscure testaceis. 
Long. 44 lin.; lat. 2 lin. 
Var.—Thorax with the sides very gently emarginate 
towards the posterior angles, which are in consequence 
more distinct. 
Hab.—Tierra del Fuego; Valparaiso. Brit. Mus. 
Parahelops quadricollis, sp. n. 
Oblongus, piceo-niger, sat convexus, nitidus, breviter 
eriseo-pubescens. Capite creberrime distincte punctato ; 
oculis prominulis. Thorace parum convexo, creberrime 
distincte punctato, capite 4 latiori, longitudine } latiori, 
margine antico medio parum producto, angulis anticis 
rotundatis, lateribus fere parallelis, ante angulos posticos 
“subito parum obliquis, angulis posticis obtusiusculis. 
Scutello parvo, triangulari. LElytris thorace paulo latiori- 
bus, et 21 longioribus, sat convexis, postice paululo 
amplhatis, sat fortiter punctato-striatis, interstitiis con- 
vexiusculis, subseriatim subtilissime punctulatis. Abdomine 
crebre distincte punctato. 
Long. 33 lin. ; lat. 14 lin. 
This species most_nearly approaches C. pubescens, and 
has the same general structure, but it is relatively broader. 
It is distinguished by its thicker punctuation of the head 
and thorax, and by the broad form of the latter. The 
elytra are proportionately less elongate, the shoulders are 
distinct. ‘The abdomen is less strongly and less thickly 
punctured than in C. pubescens, and the pubescence is 
finer. The apex of the antenne and the tarsi are pitchy. 
Var.—Thorax with the sides gently rounded. 
Hab.—Falkland Islands (C. Darwin and ‘Thos. Have ers, 
Esqrs.) Brit. Mus. 
