166 NEUROPTERA. 
Wings clear, very pale yellow at the base, costa yellow anteriorly, pterostigma yellowish-brown within black 
veins, surmounting 4-64 cells. Front wings: 13 antenodals, 8-9 postnodals, two post-triangular rows 
to the level of the first or second postnodal. Hind wings: 9-11 antenodals, 10-12 postnodals, three 
post-triangular cells, then two rows increasing to three proximal to the level of the nodus. 
Two forms of occiput exist in the present material: a, type-form, the hind margin almost straight (Tab. VII. 
fig. 40), and 6, the hind margin slightly concave or slightly trilobed (Tab. VII. fig. 42). As this does 
not appear to be associated with any other difference, [ cannot but regard all the following females as 
conspecific. 
Dimensions.—(See page 161.) 
Hab. Muxico, [a] Guadalajara (Schumann: 1 2; McClendon, coll. P. P. C.: 1 2), 
[6] Matamoros in Puebla (Barrett, coll. P. P. C.: 1 9), Cuernavaca (coll. Deam: 
39). 
Taken in July and September at Guadalajara, elsewhere in July. It is possible that 
these females may be E. boa, but the description of the male of that species is too 
brief to enable a decision to be reached. 
[9. Erpetogomphus compositus. (Tab. VII. figg. 29, 38.) 
Erpetogomphus compositus, Hagen, Monogr. Gomph. p. 400, t. 20. fig. 2 (apex abd. ? ) (1858) * ; 
Selys, Bull. Acad. Belg. (2) vii. p. 586 [10] (1859) ?; (2) xxxv. p. 740 [12] (1873) °; Hagen, 
Rep. U. 8. Surv. Terr. 1873, p. 597 (1874) *. ' 
Gomphus compositus, Hagen, Syn. Neur. N. Am. p. 99 (1861) °. 
Herpetogomphus compositus, Hagen, Proc. Bost. Soc. Nat. Hist. xviii. p. 42 (1875) °; U.S. Geogr. 
Surv. (Wheeler’s) v., Zool. p. 918 (1875) "; Currie, Proc. Ent. Soc. Wash. v. p. 303 (1908) *. 
Herpetogomphus vipirinus (sic), Hagen, Rep. U.S. Surv. Terr. 1872, p. 727 (1873) ° (teste Hagen‘). 
The anterior and posterior edges of the tibiz have a yellow line upon them in some individuals; the dorsal 
black on the eighth abdominal segment of these females is broad, not pointed, anteriorly and extends to 
the base. 
Hab. Untrep Staves, Oregon 3, “le nord de la Californie” ( Walsingham ®), Yellow- 
stone®; Bright Angel ®, Phoenix (Aunze, coll. Adams; 1 ¢ ) and Florence (Biedermann, 
coll. A. N. S.: 1 3) in Arizona (M. C. Z., C. U. lot 35: 8 3,3 @, see footnote 
page 104 anted), San Ildefonso (Yarrow) in New Mexico’, Dallas® and Pecos River 
(Pope 1°) in Texas. 
Surely this species will be found in Mexico. | 
10. Erpetogomphus designatus., 
Erpetogomphus designatus, Hagen, Monogr. Gomph. p. 401, t. 20. figg. la—j (details J 2?) (1858) °; 
Selys, Bull. Acad. Belg. (2) vii. p. 586 [10] (1859) *. 
Gomphus designatus, Hagen, Syn. Neur. N. Am. p. 99 (1861) °. 
Herpetogomphus designatus, Hagen, Proc. Bost. Soc. Nat. Hist. xviii. p. 42 (1875)*; Trans. Amer. 
Ent, Soc. xii. p. 255 (nymph) (1885) *; Banks, Ent. News, v. p. 179 (1894) °; Adams, Ent. 
News, xi. p. 622 (1900)"; Williamson, Proc. Indiana Acad. Sci. 1901, t. 1. fig. 2 (venat. 
detail) °; Ent. News, xiv. p. 226 (1908) °. 
