1976] 
Carpenter & Richardson — Eucaenus ovalis 
231 
1. National Museum, No. 38142. Mazon Creek. Holotype of 
ovalis. Female; general form of entire insect but with few details 
preserved; prothorax and head have now been exposed; oviposi- 
tor distinct. Fore wing length 22 mm; body length, 30 mm. 
2. National Museum, No. 38810. Mazon Creek. Mentioned 
by Handlirsch (1906a) but not described or figured. Female; 
shows shape of fore wing clearly, though venation is indistinct; 
fore and middle femora, cerci, ovipositor and distal part of hind 
wing well preserved. 
3. National Museum, No. 38820. Mazon Creek. Mentioned 
by Flandlirsch (1906a) but not figured or described. Male; entire 
insect shown but poorly preserved; head and prothorax now ex- 
posed; prothoracic shield very clear. 
4. National Museum, No. 38828. Mazon Creek. Identified 
by Handlirsch (1906a) as attenuatus Melander. Male; poorly 
preserved but with enough wing and body structures for iden- 
tification. 
5. Peabody Museum, No. YPM 47. Mazon Creek. Holotype 
of E. minor Handlirsch; very poor, fragmented specimen but 
determination as ovalis virtually certain. 
6. Peabody Museum, No. YPM 48. Mazon Creek. Mentioned 
by Handlirsch (1911). Female; very poor preservation; costal 
veinlets fewer than usual. 
7. Peabody Museum, No. YPM 49. Mazon Creek. Mentioned 
by Handlirsch (1911). Very poor preservation of entire speci- 
men, with only vague outlines of body and wings. 
8. Peabody museum. No. YPM 50. Mazon Creek. Very poor 
specimen showing entire insect; hind femora and cerci distinct. 
9. Illinois State Museum, No. 14887. Coal City. Holotype of 
Teneopteron mirabile Carpenter. Male; poorly preserved and 
fragmentary but shows abdomen well, especially the lateral lobes 
on some of the posterior segments. 
10. Field Museum, No. PE 976. Coal City. Described by Rich- 
ardson as second specimen of T. mirabile. Female; poor pres- 
ervation and fragmentary, but shows hind femora, tip of hind 
wing, ovipositor and general abdominal segmentation. 
11. Frank Greene collection. No. G75. Pit Eleven. Excellent 
preservation of entire insect except end of abdomen; wings and 
body particularly good, including head, with antennae, eyes, 
palpi; prothorax, femora and tibiae clearly preserved. 
