12-2 ARCANA NATURE. 



body of Cardiophorus; Aplastus resembles entirely a slender Corymbites, and bas lonjî, serrate 

 11-jointed antennae; Plastocerus bas tbe antennse 11-joinled and strongly pectinate, and Ibe female 

 not very différent in form from tbe maie; Euthijsanius bas tbe antennse 12-jointed, but otberwise is 

 similar in form to Plastocerus ; but the female bas a very long abdomen, no wings, and sbort elytra 

 obliquely truncated at the tip, only covering the base of the abdomen ; the antennae are 12-jointed 

 and only serrate in that sex. 



SCHIZOPUS, Lee. 



Antennœ, ii-articulatœ, articulis ^ — iO latioribus triangularibus , iimo ovato ; dypeus minutus in 

 f'ronte emarginata receptus, labriim majusculum antice subémarginatum, mandibulœ emarginatœ. 

 Mentum trapezoideum transversum (ligula hrems, transversa, coriacea, palpis deficientibus) ; palpi 

 maxillares brèves cylindrici, articulis subœqiialibus ; ocuU médiocres ovales. Coxœ anticœ magnœ trans- 

 versœ, conicœ, trochantino nullo; mediœ eis approximatœ majusculœ distantes; tarsi tibiis breviores, 

 articulis 1 — 3 subtus breviter, ito autem longe bilobatis, ultimo prœcedentes très longitiidine œquante, 

 unguibus ad apicem fissis. Abdomen articulis duobus primis arcte connatis, 5^o emarginata, 6to promi- 

 nulo valdee marginato, Tmo minuto parum conspicuo. 



A remarkable genus, which by its form and color recalls certain Gallerucites of the family Chryso- 

 melidœ, while the structure of the abdomen is equally suggestive of Psephenus. ïhe head is small ; 

 the thorax is gradually narrowed in front, closely applied to the elytra, and slightly sinuate at base. 

 The scutel is trilobed, with the middle lobe produced into a point. The elytra are wider than the 

 thorax, oblong, rounded at the tip, coarsely but densely punctured. The legs are moderate ; the an- 

 terior tibias are terminated by very short spurs, but I can see none on the middle or posterior tibise. 

 The anterior coxae are large, leaving only a very short prosternum, which extends between them, and 

 abuts against the declivous mesosternum ; the metasternum is short and flat, forming an angle with 

 the mesosternum, which widely séparâtes the middle coxae; the episterna of the metathorax are flat, 

 broad, and project in front; the posterior coxae are suddenly dilated internally, truncate at tip, with 

 the inner margin oblique; their anterior margin is curved, with the concavity forwards, and the me- 

 sosternum is sculptured with a Une parallel to this margin. The joints of the abdomen are nearly equal 

 in length: the first and second are connate; the third and fifth are a litde shorter than the fourth ; the 

 sixth is deeply emarginate, very small, and is visible only within the emargination of the fifth. The epi- 

 pleurae are obsolète behind. 



It will appear from the assemblage of characters detailed, that this genus will be properly enrolled 

 as a new family, Schizopodidœ, to be placed between Dascyllidœ and Cyphonidœ, completing the line 

 of affînities manifested by the Parnidœ, through Psephenus, a genus of the Atlantic States, with the 

 serricorn type of Coleoptera in the two familles named above. 



2. S. L^Tus, oblongus, viridi-œneus, subtiliter albo-pubescens, capite thoraceque confertissime scab'ro- 

 punctatis, hoc convexo canaliculato , latitudine duplo breviore, antrorsum angustato, lateribus late rotun- 

 datis et late prœcipue postice subdepressis ; elytris lœte sanguineo-rufis, confertim minus subtiliter rugose 

 punctatis, et subtilius parce punctatis, sutura viridi-œnea; tibiis tarsisque testaceis, antennis fuscis ad 

 basin testaceis, articulo imo viridi-œneo. — Long., 16 1/2 mill. — Tab. XIII, fig. 4. 



Leconte, Proceedings of the Academy ofNatural Sciences of Philadelphia, 1858, p. 71, One spécimen 

 from Arizona ; habits unknown. -àX 



ENDEODES, Lee. ^^ 



3. E, BASALis, opacus, sanguineus, brcvissime puhcscens, capite fusco, thorace latitudine longiore. pos- 



