GYNACANTHA. 193 
De Selys’s description 1, based on a single female, is very brief, and comparative with 
G. bifida, Rambur, from Brazil. Of this latter I have no material for comparison. 
4, Gynacantha nervosa. 
Gynacantha nervosa, Rambur, Névr. p- 213 (1842) *; Kolbe, Arch. f. Naturg. liv. 1, p. 168, t. 13. 
fig. X1 (apps. g) (1888)?; Karsch, Ent. Nachr. xvii. p- 281 (1891) *; Cockerell, Journ. 
Inst. Jamaica, i. p. 258 (1898) *. 
Acanthagyna nervosa, Kirby, Ann. & Mag. Nat. Hist. (6) xix. p. 615 (1897) °. 
4ischna gracilis, Burm, Handb. d. Ent. ii. p. 837 (1889) * (9 only) ; Calvert, Trans. Am. Ent. 
Soc. xxv. p. 94 (1898)”. 
Gynacantha gracilis, Hagen, Proc. Bost. Soc. Nat. Hist. xviii. p. 41 (1875) ° (in part.). 
Hab. Unttep Status, St. Augustine [1 9] in Florida [1 3, 3 9], California [2 2] 
(colls. A. NV. S., P. P. C.).—MeExico, Guadalajara (Schumann; 1 3,1 9 ); GUATEMALA, 
Santa Lucia in Dept. Escuintla (E. B. Williamson, coll. ejusd.: 1 ¢, 12); Costa 
Rica (Van Patten: 2 3); Panama, Chiriqui'[1 ¢ ], Matachin [Dr. 0. Thieme: 1 ¢ ] 
(coll. McLachlan).—Cotomsia, Bonda [2 ¢ ] and Don Diego [1 ¢] in Dept. Magda- 
lena (H. H. Smith, Carn. Mus, Pittsb.) ; Venuzonua (Appun, M. C.Z.:1 ¢ ), Puerto 
Cabello?; Guiana?, Surinam (coll. P. P. C.: 1 9 with label « Gyn. gracilis, Br.,” in 
Hagen’s hand) ; Braz [1 ?, with labels “Mus. Berol.” and “ robusta, nob.” |, Mos- 
queiro °, Chapada [1 ¢ ], Cachoeira [1 2], Bahia®’; Boxrvia, Santa Cruz}; West 
Inpres, Cuba? [Poey: 1 2] (MZ. C. Z), Bath (Urs. Swainson 4), Jamaica (C. W. 
Johnson, coll. P. P. C.: 1 9 ), Samana, Hayti (Frazar, MC. Z.: 1 ¢ ), Puerto Rico 2. 
The specimens from Guadalajara and from Matachin were taken in J uly, those from 
Santa Lucia in February ; of these last Mr. Williamson noted, « Hawking along ravine, 
with rivulet at bottom, after sundown and when it was so dark that they could scarcely 
be seen.” 
As in (. trifida, so in this species, the wings vary from almost colourless to yellowish- 
brown throughout, as in the examples from Florida. Some of the Floridan females, 
indeed, may be G. bifida, Rambur, in which case the two nominal species may be 
identical; Rambur himself speaks of bifida as ‘‘ paraissant resembler beaucoup a la 
Nervosa.” | 
The male from Chapada may be robusta, Kolbe; if so, I doubt the distinctness of 
this last-named species. 
Profs. Kolbe? and Karsch? having separated nervosa from gracilis, Burmeister, 
after they had been united by Hagen ® under the latter name, I wrote to Dr. Anton 
Handlirsch asking him for information concerning the types of gracilis, now in the 
K. K. Naturhistorisches Hofmuseum in Vienna’. He has kindly replied as follows:— 
“Von Gyn. gracilis, Burm., besitzen wir 2 Originale: 1 ¢ u. 12. Das ¢ besitzt 
auf allen Fliigeln je eine Subcostalquerader und stimmt mit der Beschreibung von 
gracilis, Karsch [*] und Kolbe [?] iiberein. Das ¢ hat keine Subcostalqueradern und 
BIOL. CENTR.-AMER., Neuropt., June 1905. ICG 
