OF WASHINGTON. 211 



Genus 12. PLATYGERRIS F. B. White. 



1883, Ent. Mo. Mag., xx, p. 36. 



caeruleus (Platygerris) Champion, 1898, Biol. C.-Am., Hem.-Het, n, 



p. 157, pi. 9, fig- 25. 

 Habitat : Costa Rica. 



depressus (Platygerris) F. B. White, 1883, Ent. Mo. Mag., xx, pp. 36, 

 39; Champion, Biol. C.-Am., Hem.-Het., n, pi. 9, figs. 23, 24, 243. 

 Habitat: Mexico. 



Genus 13. POTAMOBATES Champion. 



1898, Biol. C.-Am., Hem.-Het., n, p. 154. 



bidentatus (Potamobates) Champion, 1898, Biol. C.-Am., Hem.-Het., 



n, pp. 154, 155, pi. 9, figs. 22, 22a. 

 Habitat : Mexico ; Ecuador. 

 unidentatus (Potamobates) Champion, 1898, Biol. C.-Am., Hem.-Het., 



n, pp. 154, 155, pi. 9, figs. 20, 2oa, b, c, 21. 

 Habitat: Panama. 



Genus 14. BRACHYMETRA Mayr. 



1865, Verh. zool.-bot. Ges. Wien, xv, p. 445. 



albinervus (Halobates) Amyot et Serville, 1843, Hist. Nat. Ins. Hem., 

 p. 412 ; Mayr, 1866, Reise der Novara, Hem., pi. 5, figs. 553, b. 

 Habitat : Panama ; St. Vincent ; Grenada ; Brazil, 

 kleopatra (Brachymetra) Kirkaldy, 1899, Boll. Mus. Zool. Anat. Comp. 



Torino, xiv, No. 350, p. 3. 

 Habitat : Ecuador. 



Genus 16. CHARMATOMETRA Kirkaldy. 



1899, Ann. Soc. Ent. Belg., XLVIII, p. 509. 



bakeri (Brachymetra) Kirkaldy, 1898, Entomologist, xxxi, p. 101. 

 Habitat : Colombia ; Ecuador. 



Genus 17. TELMATOBATES Berg. 



1898, Comun. Mus. Nac. Buenos Aires, i, p. 4. 



bonairensis (Telmatobates) Berg, 1898, Comun. Mus. Nac. Buenos 



Aires, i, p. 5. 

 Habitat : Argentina. 



Genus 18. TREPOBATOPSIS Champion. 

 1898, Biol. C.-Am., Hem.-Het., n, p. 157. 



denticornis (Trepobatopsis) Champion, 1898, Biol. C.-Am., Hem.-Het., 



n, p. 158, pi. 9, figs. 26, 263. 

 Habitat: Mexico. 



