TYRINI 327 



This very distinctive species, with clear-cut qualitatively different sexual 

 characters, is a member of Group XIV by virtue of its tawny pubescence. 



Hamotus (Hamotoides) veracruzensis jietcheri new subspecies (PI. XVII) 



I have set aside the following Panamanian population as a subspecies of 

 veracruzensis, although it may prove to have full specific rank. It agrees with 

 veracruzensis save for the following: (1) Pubescence a darker brownish-yellow; 

 (2) ninth antennal segment as wide as long; (3) tenth antennal segment as 

 wide as long; (4) eleventh antennal segment relatively longer; (5) antennal 

 club of same length but distinctly less asperate; (6) terminal tergite of male 

 transversely subfusiform; (7) terminal tergite of female transversely sub- 

 trapezoidal. 



The secondary sexual characters are the same and this appears to be an 

 excellent opportunity to study the male copulatoiy apparatus of veracruzensis 

 s.s. and of jietcheri for information on the specific value of the penis between 

 two widely separated populations geographically, but with so many structural 

 features in common. Such a study, involving other neotropical pselaphids, is 

 now in progress. 



This subspecies described on eighteen specimens collected by the author 

 on the rain forest floor of Barro Colorado Island, Gatun Lake, Panama Canal 

 Zone, as follows: one female paratype (July 1, 1936) in a termite gallery of a 

 decayed log at Bang's Casa; one male paratype (July 1, 1936) in log mold 

 at Bang's Casa; one male and two female paratypes in log mold at Zetek 3 

 (July 28, 1936) ; five male and eight female paratypes beneath loose bark at 

 Zet€k 15 (July 28, 1936) . Named in honor of Frank C. Fletcher. 



Hamotus {Hamotoides) electrae new species 



Type Male. 2.3 mm. long x 0.87 mm. wide. Shining reddish-brown with 

 the integument distinctly subasperately punctate and the antennal club granu- 

 late. Pubescence bright yellow-gold, long, semibristling and abundant. Head 

 as in veracruzensis save that the eyes have about 38 even coarser facets and 

 the clypeus is roughly asperate. (PI. XVII) 



Antennae 0.94 mm.; I elongate-cylindrical; II subquadrate; III as long 

 as second but narrower, obconical; IV and V subequal, quadrate-moniliform, 

 as wide as third; VI and VII transverse-moniliform, as wide as fifth but 

 shorter; VIII very slightly wider than seventh, of same length, subtrapezoidal ; 

 distinct club of last three segments ; IX as wide as long, trapezoidal ; X slightly 

 longer than ninth, trapezoidal, slightly longer than wide; XI as long as preced- 

 ing two united, granulo-asperate as usual, with the poroid tubercle of apico- 

 intemal area well-developed. Last two segments not toothed. 



Pronotum as in veracruzensis save that the median pronotal fovea is very 

 large, deep, cleanly cut and conspicuous, slightly larger than in monachus and 

 about five times larger than in veracruzensis. 



