882 SUPPLEMENT. 
even in its most aberrant forms, to be included in that polymorphic assemblage. The 
antenne do not differ from those of the group in which these members are short and 
simple, and the anterior acetabular suture is nearly closed as in all Acanthoderes. The 
punctate-striate elytra and style of markings of the new genus show that we have here 
to deal with a type distinct from Acanthoderes. 
1. Amblysaphes striatus. (Tab. XXIII. fig. 13.) 
Anguste oblongus, convexus, obscure fuscus; thorace vittis tribus angustissimis flavis, grosse confluenter punc- 
tato ; elytris apice conjunctim rotundatis, punctato-striatis, obscure ochraceo-fusco lineatis, setulis brevibus 
albis incumbentibus obsitis ; antennis (¢?) quam corpus brevioribus, versus apicem tenuibus. 
Long. 53 lin. 
Hab. Guatemaa, Teleman (Champion). 
TETRASARUS (p. 142). 
Tetrasarus pictulus (p. 143). 
To the locality given, add :—Mexico, Parada (Saldé). 
6. Tetrasarus formosus. (Tab. XXIII. fig. 14.) 
T. albescenti haud dissimilis sed major elytrisque utrinque plagis magnis nigris tribus, etc. Oblongus, niger, 
supra flavescenti-albus nigro-guttatus ; thorace lateribus elytrisque utrinque maculis transversis magnis 
(marginibus dilaceratis) extus dilatatis tribus, quartaque minori apicali, nigris ; capite lineis duabus fron- 
talibus maculisque duabus occipitalibus ochreis ; thorace tuberibus dorsalibus grossis apice indentatis, 
lateribus conicis acutis, carina dorsali nulla; elytris apice sat late transversim sinuato-truncatis, angulis 
paullo productis, carinis brevibus centro-basalibus porrectis, granulatis, dorsalibus obtusissimis, sparsim 
punctatis; pro- et mesosterno verticalibus bituberculatis ; tibiis annulo mediano, tarsorum articulis 1° et 
4°, griseis ; tibiis anticis sat gradatim dilatatis ; antennis articulis 3°-4™ griseo-biannulatis apice scopis 
magnis nigris, articulis 5°-11™ basi griseis, 5°-6™ apice infra pluri-setosis, apicalibus ( ? ) haud hirsutis. 
Long. 73 lin. 9. 
Hab. Costa Rica (Van Patten). 
Three examples, all females. . 
7. Tetrasarus plato. (Tab. XXIII. fig. 15.) 
Oblongo-ovatus, latus, supra subplanatus, niger; elytris albis, fascia basali, macula discoidali (post medium) 
lituris marginalibus guttisque nonnullis, nigris ; thorace carina dorsali valida sed obtusa, tuberibusque 
dorsalibus magnis apice bituberculatis, lateralibus maximis conicis; elytris late trigono-ovatis apice 
breviter sinuato-truncatis, pauciter punctatis, carinis centro-basalibus valde elevatis, porrectis tuberculatis ; 
tibiis griseo-biannulatis, anticis ( ¢ ) parum dilatatis, tarsorum articulis 1° et 4° griseis ; pro- et mesosterno 
verticalibus bituberculatis. 
Long. 7 lin. oC. 
Hab. Guatemaa ? (Mus. Stuttgart). 
PLAGIOSARUS (p. 144). 
2. Plagiosarus literatus. 
P. binoculo proxime affinis. Fulvo-fuscus, elytris utrinque ante medium fascia vaga obliqua maculisque poste= 
