248 CRYPTOCEPHALINARUM BOREALI-AMERICAE DIAGNOSES. 



B—a. 



7. C. Bivius Nervm. 1840. Mag. n. h". 4,249. " Antennse fuscse, basi ferruginese : 

 caput ferrugineum, macula suborbiculari albida: prothorax albidus, lineis 4 

 longitudinalibus, puncto lateral!, marginibusque nigerrimis : elytra dorso ferruginese, 

 lateribus albida, maculis 10 margineque postico nigris : abdomen pedesque pallide 

 ferruginea. (Corp. long. -2 unc. lat. -125 unc.)" Mas latet. Pensylvania, Florida. 



B—h. 



8. C. MUTABiLis Afek Pr. Acad. 3,172 :11. Rufus; clypeo, labro, orbitisque 

 albidis ; fronte impresso : thorace polito, sparse punctulato, apice marginisque albidis: 

 elytra punctato-striata, lateribus maculis 3 nigricantibus ; basi, apice marginisque late 

 albidis : pygidio valde punctate, apice acuto : abdominis apice pedibusque rufis. 



a. Pronoto lineis 2 obliquis abbreviatis albis : elytris rufo-maculatis. 



6. Minor, niger, maculis solitis. 



Prosternum % 9 deeply emarginate posteriorly, angles of the emargi nation acute : 

 % with a shallow depression and 9 with a deep fovea upon the ultimate segment of 

 the venter. 



9. C. DisPERSUS Hald. Saturate rufus, capite pallido ; maculis 3 rufis triangulariter 

 positis : pronoto margine antico lateralique lato, maculisque 2 basalibus magnis 

 pallidis : elytra pallida, sutura guttisque panels obscure rufis : antennarum apice 

 tarsisque fuscis. Long 3| lin. 



Head flavous, sparsely punctulate, punctures more dense superiorly, several of 

 them confluent and indistinctly rufous, each side of the frontal impression ; a rufous 

 spot at the base of the antennae, forming a triangle with a rufous line in the frontal 

 impression ; labrum and extreme superior margin of the head rufous : pronotum 

 polished, minutely and sparsely punctulate ; the flavous margin encroaches so far 

 upon the disc as to leave a transverse rufous triangular spot with its apex near the 

 scutel ; extreme anterior and lateral margin rufous : scutel rufous, with a flavous 

 spot : elytra flavous, punctate in series, somewhat scabrous towards the apex, 

 maculate with rufous, three transverse sub-basal and two sub-apical spots (on each,) 

 a medial sutural spot extending and contracting backwards to near the apex, with a 

 short one exterior to it, and two or three minute ones towards the exterior margin, 

 which is rufous posteriorly from the apex to near the middle, where the color 

 dilates into a spot : beneath and feet pale fuscous, mesosternum blackish, a flavous 

 plate between the posterior femora; ultimate segment of the venter with a profound 

 fovea in the female. St. Louis, Missouri. 



