NEUROPTERA. 560 
and the dimensions given above are based on 10 ¢ pulla S. Pedro Sula; 10 ¢ frequeniu’a San Pedro 
Sula; 9 2 pulla Escuintla, 1 9 S. Lucia; 10 Q frequentula, Teapa. 
Hab. (of pulla). Mexico, Tepic [14 ¢ ], Sierra Madre, Presidio de Mazatlan, Guada- 
lajara, Vera Cruz, Medellin, Iguala, Rio Balsas, Tepetlapa, as before (anted, page 79), 
Teapa [1 ¢, 2 2, only], Yurecuaro (Calvert, coll. P. P. C.: 1 3) in Michoacan ; 
GuATEMALA, Livingston [1 2 ], Los Amates [1 ¢ ], Gualan [6 pairs + 152 ¢, 15 @ |, 
between El Rancho and Sanarate [1 ¢ ], Sanarate [5 ¢ |, Amatitlan [6 ¢, 2 @ |, Santa 
Maria[2 pairs + 5 ¢ |, Escuintla[97 3 ,9 @ |, Santa Lucia [1 pair + 24 ¢ |, Mazatenango 
[11 ¢]; Honpuras, San Pedro Sula [1 pair + 13 ¢,2 2 | (Williamsons, Hine, colls. 
Wlimsn., O. S. U.); Nicaracua, Chinandega® (Baker, coll. P. P. C.: 2 3), Chontales 
as before; Costa Rica, Surubres [34 6,11 2], Esparta [7 3 | (Biolley, coll. Kaht), 
Jesus Maria [4¢], Rio Machuca [8 ¢ | (Biolley, colls. A. NV. S., Wlimsn.); PANama 
(as before), Chiriqui (id.).—VeEnrzveta (Appun: 1 ¢,a4%: 16, both in MC Z, 
types of Hagen !): 
Of the examples taken at Gualan, Mr. Williamson wrote: ‘Jan. 14, 1905. A common 
marsh species frequenting grass in sun and shade. ‘This species associated with 
species marked A [= Argia indicatrix| which was very rare. In marsh between 
Gualan and village Sing Sing.” He also records a male from Escuintla, Jan. 31,1905, 
as “taken from spider’s web.” 
Some specimens appear to be intermediate between pulla and frequentula. Thus a 
female from Jojutla, Morelos, Mexico (Barrett, coll. P. P. C.) has the colours of pudta, but 
the mesostigmal lamine are more elongated and more approximated (see Tab. X. fig. 22) 
and hence approach those of frequentula. Two females from Oaxaca (Howard, U. S. 
N. M.) with the colours of frequentula have the laminz less elongated, thus approaching 
pulla, and much the same condition exists in the females from ‘Tepic (Tab. X. fig. 23). 
Of uncertain relationship are sixteen females (Bruner, Cary, U. S. N. M1.) from Juan 
Vifias, Costa Rica, having the mesostigmal lamin as in frequentula, but having the 
hind prothoracic lobe pale, unmarked with black (both pulla and frequentula have 
some black marks thereon), the black mid-dorsal thoracic stripe distinctly narrowed in 
its lower fourth, the black humeral stripe consisting of a superior streak and a separate 
inferior line, or of a continuous line, which widens only at its extreme lower end, so 
that there is practically no black mesepimeral stripe. 
8 (a). Argia frequentula, sp.n. (Tab. IV. fig. 33s; Tab. X. figg. 9-11.) 
For description, dimensions, &c., see above under A. pulla. 
Hab. Mexico, Misantla, Atoyac, Teapa (38 ¢*, 34 2), Rio Cocula, Tehuantepec, 
Tolosa, as before, anted, page 79; GuateMmaa, Livingston [as before, and 0 ¢, 5 @ ], 
Puerto Barrios {1 ¢, 1 ¢], Sections 11 [1 pair + 6 ¢] and 13 [2 ¢ ] of Ferro Carril 
* Some of the males enumerated from this and other localities on page 79, antea, as pulla, had lost their 
appendages and hence cannot now be distinguished as pulla or Frequentula. 
BIOL. CENTR.-AMER., Neuropt., July 1907. 8b 
