258 NEOTROPICAL PSELAPHIDAE 



ond and bearing a very long, slender primary and a much shorter, slender 

 secondary claw, typical of genus. 



Erected on one type and three paratype females, collected with ants at 

 5500 feet, on June 30, 1941, at Las Vigas, Vera Cruz, Mexico, by Mr. Dybas. 

 The host ants have been sent away for identification. The sex was determined 

 by dissection.^ 



The female of centralis and of myrmecocolus are rapidly differentiated. 

 Sharp (1887, p. 20) states that the female centralis "is remarkable on account 

 of the existence of a conical projection of the dorsal surface of the hind body 

 at the extremity." As seen from the description of myrmecocolus there is 

 nothing analogous to this condition. 



Group V 



I am unfamiliar with this group of three Brazilian species, all described 

 by Reitter. 



The species may be listed as follows: 



I 



bilineatus Reitter. 1888. Blumenau, Brazil. 



bistriatus Reitter. 1883. Brazil. 



gounellei Raffray. 1917. Pemambuco, Brazil. (Male known only) 



longicornis Reitter. 1885. Blumenau, Brazil. 



pilicornis Raffray. 1917. Asuncion, Paraguay. (Male known only) 



tricarinatus Raffray. 1904. Bahia, Brazil. (Male known only) 



II 



humeralis Raffray. 1887. Bogota, Colombia. 

 globipennis Reitter. 1883. San Marcos, Mexico. (Genotype) 

 liljebladi Park. 1933. Turrialba, Costa Rica. (Male known only) 

 panamensis Fletcher. 1927. Barro Colorado Island, Gatun Lake, 



Panama Canal Zone. (Female known only) 

 rugipes Raffray. 1890. Tovar Colony, Venezuela. (Female known only) 



III 



jasciculatus Raffray. 1904. Bahia, Brazil. (Male known only) 



IV 



cavifrons Raffray. 1909. Sao Paulo, Brazil. (Male known only) 

 centralis Sharp. 1887. San Geronimo and Quiche Mountains (7000 

 to 9000 feet) Guatemala. (Both sexes known) 



^ This dissection is easily performed on Euphalepsus. The abdomen is large and conical 

 and can be cut off without injury to legs. Then the abdomen is held firmly, lumen up, by 

 the spread hairs of a small brush. If this is done in 95 per cent alcohol, under a binocular 

 dissecting microscope, the penis can be picked out with a fine micro-hook if a male, or the 

 absence of penis confirmed if a female. 



