182 NEOTROPICAL PSELAPHIDAE 



(U.S.N.M. paratype, No. 44604) hirsutus 



Known only from Panama Canal Zone; 1.2-1.3 mm. long; male with 

 the third visible sternite (morphological fourth) highly modified: 

 four protuberances, two lateral which are relatively low and broad 

 and lightly pubescent, and two median which are relatively high 



and narrow and each heavily tufted with setae 



cisinsularis new species 



Subgenus Drasinus 



I have given some thought to the composition of Drasinus and am still 

 very dissatisfied. This is largely the result of mistakes and lack of fullness of 

 species descriptions rather than with the original generic concept. As at present 

 organized, all four species would appear to agree well in general habitus, in 

 being closely related to Decarthron, and in having both sexes (as far as de- 

 scribed) having the metastemum modified and the posterior tibiae inflated and 

 slightly arcuate in posterior half or third of their length. 



In addition to the confusion arising from the incorrect generic key of 

 Raffray (1908) previously alluded to, the chief difficulty appears to lie in the 

 shape of the distal segment of the maxillary palpi. When Raffray described 

 the genus Drasinus (1904, p. 148) he gave a clear figure of the maxillary palpus 

 of the genotype hinodulus and I have used this as the shape of the palpus in 

 the key to subgenera given above. However, in the same paper (1904, p. 183) 

 Raffray described Euteleia and gave an equally clear figure of the palpus of 

 recens (Schaufuss) the Brazilian genotype. In this second genus Raffray de- 

 scribed three new species, Euteleia lewisi, trifoveata and nodosa. In 1908 

 Raffray took his Euteleia lewisi from this genus and placed it in his Drasinus. 

 Now the cited figure of the fourth segment of the palpus of Euteleia recens 

 (Schaufuss) is radically different from that of Drasinus hinodulus Raffray 

 and hence the distinguished French author must have subsequently discovered 

 this error and reassigned lewisi to Drasinus. But the original description of 

 lewisi (1904, pp. 183-184) cites the fourth segment of the palpus as fusiform, 

 which agrees perfectly with that of recens and does not agree with hinodulus 

 at all. 



I have not seen the genotypes of either of these Raffrayan genera and 

 hence place lewisi Raffray in Drasinus on the assumption that the 1908 po- 

 sition is the true one and that both hinodulus and lewisi have similar maxillary 

 palpi. 



Subgenus Paradrasinus new subgenus 



I am perfectly satisfied with the composition of this section of Drasinus. 

 I have had the opportunity to study a paratype (U.S.N.M. No. 44604) of the 

 well-described hirsutus Fletcher and this species is wholy congeneric with 

 cisinsularis. Both have similar terminal segments of the maxillary palpi, as 

 described in erecting this new subgenus ; both have the male sex with modified 

 sternites. The many differences are of specific, rather than subgeneric rank. 



