NEUROPTERA.—ODONATA. 
PLATE IV. 
[All the figures are drawn with the camera lucida to the same scale. ] 
Figg. 1-26. Left mesostigmal lamina of females, seen from above and slightly in front. 
Figg. 1,2. Argia vivida, Hagen. Texolo. J, the Fig. 14. Argia tarascana, sp.n. Acambaro, 
mesostigmal lamina ; ms., mesostigma ; te., 15. A. difficilis, Selys. Bugaba. 
mid-dorsal thoracic carina where it forks 16, A. lacrymans, Hagen, Cuernavaca. 
at its lower end ; pt., hind margin of pro- 17. A. tonto, sp. n. Tombstone, Ariz. 
thorax. One-half of te. is shown in all of 18. A. translata, Hagen. San Lorenzo. 
figg. 1-26, but pt. 18 omitted in many and 19. A. tezpr, sp.n. Savana Grande. (In 18 
ms. in all but fig. 1. and 19 the dotted curves show the position 
3,4. A. extranea, Hagen. Texolo. of the inferior mesepisternal tubercle.) 
5. A. percellulata, sp.n. Atoyac. 20. A. mesta, Hagen. Arizona. 
6. A. medullaris, Hagen? (= vartabilés ?, 21. A. harknessi, Calvert. Tepic. 
Selys), Zapote. 22. A. cuprea, Hagen. Diente. 
Y. A. sedula, Hagen. Monterey. 23. A. indicatrix, sp. n. Teapa. 
8. A. popoluca, sp.n. Teapa. 24, A. cupraurea (Selys, MS.), sp. n. San 
9. A. ulmeca, sp. n. Atoyac. Esteban. 
10. A. enea, Hagen. Tepetlapa. 25, .A. violacea, Hagen, n. var. pallens. Gua- 
11. A. oculata, Hagen. Atoyac. dalajara. 
12. A. fissa, Selys. San Gerénimo, 26. A. agrivides, Calvert. Los Angeles, Calif, 
13. A. deami, sp. n. Dublan. 
Figg. 27-62. Profile views, left side, of the tenth abdominal segment and the appendages of males: s and 
ss, inner surface of right superior appendage seen obliquely from above; i and ié, profile views of outer surface 
of left inferior appendage. 
Fig. 27. Argia percellulata, sp. n. Atoyac. Fig. 49, 49s. Argia lacrymans, Hagen. Omiltcme. 
28, 28s. A. wilsoni, sp. n. Livingston, Guat. 50. A. fissa, Selys, Tepic; 50s, id., Chilpan- 
29, 29s. A. mesta, Hagen. Texas. cingo. 
30, 30s. A. translata, Hagen. Atoyac. 51, 51s. A. tarascana, sp. n., Cuernavaca; 
31, A. tezpi, sp. n., Tepic; 81 s, id., Dos Ol ss, id., Acambaro. 
Arroyos. 52, 52s. A. deami, sp.n. Dublan. 
32, 32s. A. sedula, Hagen. Texas. 53. A. variabilis, Selys. Vera Cruz; from type 
33. A. pulla, Hagen, Tepic; 33s, id., Teapa ; in the M.C.Z. 
33 ss, id., Presidio. b4, 54s. A. variabilis, Selys (medullaris, 
34, 34.5. A. ulmeca, sp. n, Atoyac; 34¢, id., Hagen ?). San Gerdnimo. 
another individual. 5d, 508, A. rhoadsi, sp.n. Monterey. 
35, 35a. A. adamsi, sp.n. Bugaba. — - _ 66, A. evtranea, Hagen, Tepic; 56s, 56%, id., 
36, 3s. A. oculata, Hagen, Atoyac; 36%, id., Caché ; 56 2, id., Jalapa. 
Tepetlapa ; 36 it, Jalapa. 57, 578. A. vivida, Hagen, Texas; 57 ss, id., 
37, 378. A. herberti, sp.n. Amula. Texolo. 
38, 38s. A. popoluca, sp.n. Teapa. 58. A, vivida, n. var. plana (Hagen, MS.). 
39, 39s. A. indicatrix, sp.n. Teapa. Sierra de las Aguas Escondidas, 
40, 40s. A. rogersi, sp.n. Caché. 59. A. funebris, Hagen. Mexico; from type 
41, 41s. A. cuprea, Hagen. Teapa. in M.C. Z. 
42, A. cupraurea (Selys, MS.), sp. n. David. 60, 60s. A. immunda, Hagen. Venta de 
43. A. cnea, Hagen, Tepic; 44, 448, id., Zopilote. 
Misantla. 61, Gls. A. violacea, Hagen, n. var. pallens. 
45. A. harknessi, Calvert, Tepic, from type; ; Tucson. 
45, id., Savana Grande. 62. A. agrioides, Calvert, Texas, type: 62s, 
46, 46s. A. barretti, sp.n. Linares. id., Lower Purisima, type; 62 ss, id., 
47, 47s. A. chelata, sp.n. Irazu. new race nahuana, Mexico city. 
48, 48s. A. tonio, sp.n. Arizona. 
