18 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



From a single specimen, 2-3 inch objective, 1-inch optic. 

 Bausch & Lomb. 



Female. Not known. 



Described from a single male specimen received from Mr. 0. 

 H. Swezey as above noted. The species is characterized by the 

 shape, size and ciliation of the fore wings, which are broader 

 than in most species of the genus, resembling those of sibyha, 

 nearly, though the marginal cilia in that species are longer. 



Habitat: Sandwich Islands -Oahu (Olympus). 



Type: Cat. No. 15251, U. S. National Museum, Washington, 

 D. C., the above male (mounted on a slide with a pair of Poly- 

 nema terrestre Perkins). 



5. Polynema tantalea Perkins. 



The fourth species received from Mr. Swezey is native to the 

 Sandwich Islands and was described form Oahu. It is a large 

 species, but not so large as terrestre, to the naked eye appearing 

 intermediate between that species and rubriventre. It is charac- 

 terized as far as other species known to me are concerned by its 

 ferruginous color and clear fore wings, the head black (sometimes 

 in balsam having a metallic greenish tinge, though I doubt the 

 realness of that) and the distal five antennal joints, the distal 

 tarsal joint. I was sent two specimens, but they represent two 

 apparent species, neither of which agree with the description of 

 tantalea. A male specimen agrees, however, excepting that the 

 abdomen is black only at tip. Here again is a case where it is 

 impossible to identify with certainty the specimens from the 

 descriptions, since no comparative descriptive notes are given for 

 the species, more especially in regard to the fore wings in which 

 these two species differ. I shall thus consider the male specimen 

 as tantalea, since it agrees nearly with the description of that 

 species (its abdomen is obscurely dusky nearly to base, black at 

 tip); the female, however, appears to be undescribed; it differs 

 from apicalis in having the third and fourth antennal joints yellow 

 and the wings hyaline, from perforator presumably in bearing a 

 shorter club, a shorter proximal funicle joint, shorter marginal 

 cilia of the fore wing, and the yellow third and fourth antennal 

 joints; and from oahuensis, a third similar species described by 

 Perkins from Hawaii, in having the four distal joints of the anten- 

 nae black, the head all black and shorter marginal cilia of the fore 

 wing. As regards tantalea as represented by the male specimen, 

 it differs in having the fore wings less broad, the discal ciliation 

 denser but of about the same quality; thus, the tantalea bears 

 about thirty-four lines of the cilia across the widest blade portion, 

 while the other bears about thirty denser lines. The difference 

 is noticeable, but without more material I merely designate this 



