TYCHINI 261 



Key to the Neotropical Genera 



Base of each elytron with at least three foveae DALMODES 



Base of each elytron with at most two foveae 2 



2. Base of each elytron with two foveae 3 



Base of each elytron simple, without foveae, and at most with a 



vague impression 6 



3. Flank of each elytron with a longitudinal sulcus 4 



Flank of each elytron with no trace of a longitudinal sulcus, but with 



a strong longitudinal carina on the posterior (apical) half of elytral 

 flank DALMONEXUS, new genus 



4. Pronotum with a longitudinal sulcus on each side. . HARMOPHOLA 

 Pronotum without lateral longitudinal sulci 5 



5. Pronotum with three free antebasal foveae but no trace of a trans- 



verse antebasal sulcus HARMOMIMA 



Pronotum with a lateral fovea each side connected by a transverse 

 antebasal sulcus HARMOPHORUS 



6. Flank of each elytron with a longitudinal sulcus 7 



Flank of each elytron without any trace of a longitudinal sulcus ; the 



elytral flank may be variously modified: (1) perfectly simple, (2) 

 an entire longitudinal carina of varying thickness, which may or 

 may not arise in a subhumeral fovea, or (3) a carina developed 

 only on the posterior (apical) third of the elytral length 8 



7. Posterior coxae widely separated by the metasternum 



BYTHINOPHYSIS 



Posterior coxae very slightly separated DALMOMIMA 



8. Flank of each elytron with a subhumeral fovea BURIS 



Flank of each elytron without a subhumeral fovea 9 



9. Flank of each elytron with an entire longitudinal carina from near 



humeral angle to apical eighth of length 10 



Flank of each elytron either perfectly simple and noncarinated, or 

 with a longitudinal carina for the apical third of elytral length. ... 11 



10. Occiput and vertex longitudinally, medianly carinate 



BATRIPHYSIS, new genus 



Occiput and vertex not medianly, longitudinally carinate 



DALMOBURIS, new genus 



11. Flank of each elytron with a fine longitudinal carina for the apical 



third, the basal two-thirds of length being perfectly simple 



PHYBYTHARSIS, new genus 



Flank of elytra without any trace of longitudinal carinae 12 



12. Abdomen absolutely immarginate, lacking even an external carina at 



base of first tergite on each side DALMOPHYSIS 



Abdomen with at least the first tergite narrowly but distinctly mar- 

 gined with an external and an internal carina each side 13 



