420 PROCEEDINGS OF THE NATIONAL MUSEUM vol. io9 



irregular pale area at base; cell M2 with a pale spot lying behind medial 

 fork and one lying in front of mediocubital fork. Macrotrichia 

 scanty on distal third of wing; costa extending to 0.61 (0.59-0.64, 

 n=ll) of distance to wing tip. Halter knob dark. 



Abdomen. — Dark brown, cerci pale. Spermatheca one, pyriform, 

 measuring 0.070 by 0.046 mm., the base of the duct sclerotized a 

 considerable distance. 



Male genitalia: Ninth sternum with ver}^ shallow caudomedian 

 excavation; ninth tergum short and tapering with short apicolateral 

 processes. Basistyle with ventral root foot-shaped, dorsal root 

 slender; dististyle slender and moderately curved, with bent tip. 

 Aedeagus with broad, rounded, basal arch extending to less than half 

 of total length, basal arms curved and slender, distal portion slender 

 and simple. Parameres each with large basal knob, stem bent near 

 base, moderately stout, with a well developed ventral lobe, distal 

 portion very slender with a lateral fringe of fine spines. 



Distribution: Venezuela; Honduras (Lancetilla); Mexico (Tapa- 

 chula, Chiapas); Panama; Trinidad (Grandwood, Port Delgada, Port 

 of Spain, Tucker Valle}^. 



Panama records: 



BocAS DEL ToRO PROVINCE: Almirante. 



Canal Zone: Camp Butler, Fort Clayton, Fort Davis, Fort Gulick, Fort Kobbe, 



Fort San Lorenzo, Galeta Point, Loma Boracho, Madden Dam, Mindi Dairy, 



Mojinga Swamp. 

 CniRiQuf Province: Algarrobo, Chiriqui, Concepci6n, David, Tortugas. 

 CocL]& Province: Aguadulce, Chiru, Cocl6, El Valle, Natd, Puerto Farall6n, 



Puerto Obaldfa, Puerto Posado. 

 Col6n Province: Cativa, Pil6n, Pina. 

 Dari^n Province: El Real, Garachine, Punta Patino. 

 Los S.4NTOS Province: Pan de Azucar, Puerto Mensabe, Las Tablas. 

 Panama Province: Alcalde Diaz, Arraijan, Capitana, Chepo, Juan Diaz, La 

 Jolla, Naranjal Pacora, Pedregal, Tapagra, Tocumen, Venado Beach, Vique 



Cove. 

 Archipi^lago de las Perlas: Isla del Rey. 

 Veraguas Province: Divisa, Rio Santa Maria, Sapotilla. 



Discussion: This species is related to castillae Fox, which also is 

 unusual in this group in having only one spermatheca. 



The transferrans group 



This group consists of medium-sized brownish species with small, 

 round, pale wing spots; two pale spots in apex of anal cell; five distal 

 antennal segments much elongated, (antennal ratio, 1.43-1.85); distal 

 sensory tufts present on segments iii, x or xi to xiv; four or five tibial 

 spines, only one spermatheca present; male genitalia of patulipalpis 

 similar to those of dehilipalpis, with foot-shaped ventral root, aedeagus 



