EUPLECTINI 93 



and thick, with a first segment two-fifths as long as second; second inflated; a 

 single very long, arcuate claw. 



Described on a single male, the type. Collected by the author on July 27, 

 1936, on Barro Colorado Island, Gatun Lake, Panama Canal Zone, from beneath 

 the bark of a log at Zetek 23. The type is a slide mount. 



The genus may be listed as follows: 



barrocoloradoensis new species. Panama Canal Zone. 

 brevicollis (Raffray). 1898. Mexico. {Apothinus) 

 clavatus (Raffray). 1898. Mexico. (Apothinus) 

 impressifrons (SharjD). 1887. Guatemala. {Apothinus) 

 insignis (Raffray). 1898. Brazil. (Apothimis) 

 ohscurus (Sharp). 1887. Guatemala. {Apothinus) 

 sharpi (Raffray). 1898. Mexico. (Apothinus) 



BIBLOMIMUS (Raffray, 1903) 



Raffray (1903) {Bihlomimus) 

 Raffray (1908a, b) [Ramecia) 



Raffray erected this genus (p. 545, 1903) on a single species, minutus; 

 later he described a second species, impressa (1908a, p. 36), and placed both of 

 these in the North American genus Ramecia (Casey, 1893, p. 450). This sy- 

 nonymy was followed in the Genera Insectorum (1908b, p. 101). After giving 

 the matter some study, I feel that the two species of Raffray do not belong in 

 Ramecia, and reinstate Bihlomimus for them. 



These two genera, Bihlomimus and Ramecia, are structurally similar save 

 that the former has the prosternum with a median, longitudinal carina, whereas 

 the latter has the prosternum simple and not carinate. The presence or absence 

 of the median prosternal carina is considered too fundamental to allow such an 

 association. Possibly Bihlomimus should be placed as a neotropical subgenus 

 of Ramecia, but generic isolation is considered preferable at this time. Both 

 genera are believed to be more primitive than their relative positions given by 

 Raffray (1908), and Casey (1893, p. 450-453 and 1897, p. 552) has discussed 

 the affinity of his genus with the trichonychide genera. 



The species of Bihlomimus may be separated as follows: 



Tenth antennal segment strongly transverse, twice as wide as the ninth 



segment; head and pronotum about equally wide minutus 



(1.0 mm.; female sex known only) 

 Tenth antennal segment twice as long as ninth segment, but not appre- 

 ciably wider; head narrower than pronotum 2 



2. Six sternites present; sternites second to fifth subequal in length; sixth 



sternite large, triangular impressa Female 



(1.1 mm.) 



Seven sternites present; sternites second to fourth progressively 



shorter; fifth minute; sixth much larger, arcuate, deeply emarginate; 



seventh large, briefly ovate impressa Male 



