BY THOMAS G. SLOANE. 369^ 



thorax are described as more rounded at the summit than in R. 

 liopleurus Chaud., whereas in R. Icevis these angles are more 

 rectangular and marked than in B. lioj^leurns. 



LoxoGENius, n.gen. 



Mentuin short ; sinus shallow, wide, bordered and roundly- 

 advanced at bottomj lobes obtusely rounded at apex, oblique on 

 inner side. Subntentuin raised above mentum, with about six 

 setigerous punctures on each side; a wide deep concavity behind 

 middle of submentum. Mouth-parts similar to those of Castel- 

 naudia; labial palpi with penultimate joint 2-setose. Labrum 

 prominent, 6-setose, lightly and widely emarginate. Faragence* 

 with upper margin forming a border, a deep elongate subfovei- 

 form depression between this upper border and a median ridge. 

 Frothorax opaque, subcordate; lateral channel and border wide; 

 a lateral seta on each margin at widest part; two lateral basal 

 seta3 on each side behind posterior sinuosity; two set?e on margin 

 at each anterior angle. Elytra convex, a little narrowed to base, 

 opaque; ninth interstice and lateral margin nitid; basal border 

 nitid, with a strong obtuse tooth at each humeral angle closing 

 the space between the second carina and the lateral margin; 

 third, fifth and seventh interstices strongly carinate. Frosternum 

 with a median channel extending backwards from about anterior 

 third almost to base; intercoxal part bordered on base and bear- 

 ing three or four set^. Mesosterjium with intercoxal declivity 

 glabrous. Metasternuin glabrous; episterna concave, short, but 

 together with epimera, longer than broad. Vetttral segments 

 transversely sulcate and bordered posteriorly; apical segment in 

 ^ with two, in ^ with four, setigerous punctures. Fades of 

 Cadtelnaudia, Apterous. ^. A7iterior tarsi with three basal 

 joints dilatate and with squamulse beneath. 



Type. — Honialosoma opacipeniie Maclea3^ Length 20, pro- 

 thorax 5x6, elytra 10-7 x 6*3 mm. Several specimens sent to 



* -Chaudoir gave the name paragena to the space between the subocular 

 antennal scrobe and the buccal fissure. 



