CARPHINA.—SYMPLEUROTIS. 185 
CARPHINA. 
Carphina, Bates, Trans. Ent. Soc. 1872, p. 223. 
Four species are known, all Tropical-American. With this commences a series of 
genera of Acanthocinini distinguished from all the preceding by their laterally com- 
pressed, generally elongate forms, in which the elytra are furnished with lateral 
caring, separating the dorsal surface from the vertical epipleure. 
1. Carphina arcifera. (Tab. XIV. fig. 8.) 
Carphina arcifera, Bates, Trans. Ent. Soc. 1872, p. 223°. 
Hab. Mexico, Orizaba (Sallé); GuatemaLa, El Reposo (Champion); Nicaragua, 
Chontales (Belé 1, Janson). 
SYMPLEUROTIS. 
Corpore ut in Synchyzopo et Colobothea elongatum, lateraliter compressum ; supra inzequale, setosum.. Caput 
angustum, frons elongata; oculi parvi, subtenuiter granulati. Antenne ()corpore fere dimidio longiores, 
quam in Carterica robustiores, vix setose, scapo modice elongato, versus apicem gradatim clavato, articulo 
tertio quam scapus paullulum longiore, 4°-11™ gradatim decrescentibus. Thorax subcylindricus, inermis, 
antice leviter rotundatus, post medium angustatus, dorso anteriore bituberoso. Hlytra thorace multo 
angustiora, parallela, apice recte truncata angulo exteriore spinoso; supra utrinque carinata, humeris 
prominulis, tuberculis centro-basalibus modice elevatis, deinde dorso subplanato, postice declivia. Pro- 
sternum sat latum, mesosternum latum quadratum. Pedes modice elongati ; femora subito clavata; tarsi 
posteriores elongati, articulo primo quam duo sequentes longiore. Abdominis (4) segmentum apicale 
elongatum, lamina ventrali modice, dorsali valde emarginata, hac angulis prolongatis acutis. 
The insect for which this new genus is instituted bears no resemblance in facies or 
markings to any of the numerous species of Colobothea, Synchyzopus, and Carterica, 
which it approaches in its elongate and laterally-compressed form. The form of the 
thorax is also peculiar, but bears some resemblance to that of Synchyzopus histrio, 
excepting its tuberose surface. 
1. Sympleurotis rudis. 
Fusco-olivacea, fulvo obscure variegata et cinereo nigroque guttata ; scutello nigro, linea mediana cinerea ; elytris 
post medium fasciola indistincta obliqua nigro-fusca, antice cinereo marginata; antennis nigris, articulis 
basi griseis; pedibus piceis fusco-pubescentibus, tibiis apice tarsisque nigris ; corpore subtus fusco incum- 
benti-pubescente. 
Long. 4-43 lin. 
Hab. Mexico, Juquila (Sallé); Guatemaua, Capetillo (Champion). 
The single Mexican specimen is less strongly marked both in colour and size of 
its tubercles; the above description is drawn chiefly from two examples from 
Guatemala. 
bo 
o 
BIOL. CENTR.-AMER., Coleopt., Vol. V., Apri 1881. 
