New and little-known Lagriidae. 171 



2. Species large, elongate, mostly resembling 



the Carabid-genus Agra, the elytra 

 usually metallic,* nigro-tessellate in S. 

 meleagris, and with two or more of the 

 alternate interstices catenulato-tubercu- 

 late throughout their length or at least 

 towards apex, the posterior femora 

 bidentate at base in S. gemmifer ; o some- 

 times with strongly pronounced secondary 

 sexual characters in the legs or aedeagus,^ 

 or in the clothing of the antennae or 

 ventral surface. 



a. Elytra mucronate at tip Nos. 7-15. 



b. Elytra not mucronate at tip . . . . Nos. 16-34. 



3. Species large, very elongate, with a long, 



conical, red prothorax and metallic elytra, 

 the latter acuminate at apex and with 

 almost smooth interstices No. 35. 



4. Species moderately large, narrow, black, 



with narrow head, elongate-cylindrical 

 prothorax and cyaneous elytra, the inter- 

 stices of latter almost smooth . . . No. 36. 



5. Species moderately large, black, with brilliant 



green, non-tuberculate, mvicronate elytra, 

 and extremely slender antennae (as in 

 Othryades) No. 37. 



6. Species moderately large or small, resembling 



some of those placed under B 2a, with the 

 elytra unarmed at the tip, blue or green, and 

 bearing small, scattered, rounded tubercles Nos. 38-40. 



7. Species resembling some of those placed 



under B 26, with uneven, very feebly 

 striato-punctate, brilliantly metallic elytra, 

 which are catenulato-tuberculate towards 

 sides or apex Nos. 41-43. 



8. Species moderately large or small, the elytra 



usually metallic or with metallic lustre, 

 with simple scattered setigerous impres- 

 sions to tip (interruptedly catenulate 

 laterally in S. impressipennis). 



* S. agraeformis, Champ., from Panama, belongs to this section. 



^ Penis-sheath (=: conjoined lateral lobes of tegmen, sec. Sharp) 

 twisted and asymmetric in males of S. catenata, viridipennis, geni- 

 culata, asymmetrica and tortipes. 



