274 



BULLETIN : MUSEUM OF COMPARATIVE ZOOLOGY. 



Tenthredo, sp. Schlotheim. 



Petrefactenkunde, 1820, p. 43. 



Lower Oligocene ; Baltic Amber. 

 Tenthredo, sp. Gravenhorst. 



Uebers. schles. gesellsch. vaterl. cult, 



1835, p. 92. 



Lower Oligocene ; Baltic Amber. 

 Tenthredo, sp. Brischke. 



Schrift. naturf. gesellsch. Danzig., 

 1886, n. f., 6, p. 279. 



Lower Oligocene ; Baltic Amber. 

 Tenthredo, sp. Schoberlin. 



Soc. entom., 1888, 3, p. 61. 



Upper Miocene ; Oeningen (two spe- 

 cies). 



Tenthredo gervaisi Heer. 



Saporta, Rech. climat. pays tert., 1861, 

 p. 153. 



Lower Oligocene ; Aix, France. 

 Tenthredo submersa Ckll. 



Bull. Arner. mus. nat. hist., 1907, 23, 



p. 613. 

 Tenthredo avia Brues. 



Bull. M. C. Z., 1908, 51, p. 268. 



Miocene ; Florissant, Colorado. 

 Tenthredo infossa Brues. 



Bull. M. C. Z., 1908, 51, p. 269. 



Miocene ; Florissant, Colorado. 

 Tenthredo misera Brues. 



Bull. M. C. Z., 1908, 51, p. 270. 



Miocene; Florissant, Colorado. 



Lydidae. 



Atocus defessus Scudder. 

 Bull. 93, U. S. G. S., 1892, p. 24, pi. 11, 



f.6. 

 Cockerell, Science, 1907, n. s., 27, p. 



113. 



Miocene ; Florissant, Colorado. 

 Pamphilius, sp. (larva) Menge. 

 Progr. petrischule Danzig, 1856, p. 24. 

 Lower Oligocene ; Baltic Amber. 



Electrocephalus strahlendorffi Konow. 



Ent. nachr., 1897, 23, p. 37. 



Lower Oligocene; Baltic Amber. 

 Cephus, sp. Menge. 



Progr. petrischule Danzig, 1856, p. 24. 



Lower Oligocene ; Baltic Amber. 

 Megaxyela petrefacta Brues. 



Bull. M. C. Z., 1908, 51, p. 271. 



Miocene ; Florissant, Colorado. 



Siricidae. 



Paururus spectabilis Heer. 

 Neue denkschr. schweitz. gesellsch., 



1867, 22, p. 38. 

 Lower Miocene ; Radoboj. 

 Sirex, 2 spp. Klebs. 

 Tagbl. naturforscheryers., 1889, 62, 



p. 269. 



Lower Oligocene ; Baltic Amber. 

 Lithoryssus parvus Brues. 

 Bull. Amer. mus. nat. hist., 1906, 22, 



p. 492. fig. 1. 

 Miocene ; Florissant, Colorado. 



Cephites fragilis Heer. 

 Insektenf. tertiarg. Oeningen, 1849, 2, 



p. 174. 



Upper Miocene ; Oeningen. 

 Cephites oeningensis Heer. 

 Insektenf. tertiarg. Oeningen, 1849, 2, 



p. 173. 

 Upper Miocene ; Oeningen. 



