108 INSECUTOR INSCiTI/E MENSTRUUS 



ment with erect hairs about same length as those of clypeus and vertex, 

 the coxae also with some hairs of about same length. Third to eighth 

 abdominal segments with bunches of shorter haurs on posterior edge, not 

 one-half length of those of thorax, suberect to erect, showing best on ter- 

 gum but dso extending on sides and venter. Hypopygium of both sexes 

 with equcilly long similar hairs. 



Wing fringe is longest near base on posterior border, in region of anal 

 angle of wing, these hairs being straight, very thickly set, as long as those 

 of thorax or somewhat longer, but very much finer, whence they gradu- 

 ally decrease in length to tip of wing, being continuous to tip in the single 

 male, and usually giving out just before tip in female. Fringe of costa 

 longest at base, being here about as long as clypeal hairs and about as 

 coarse, thence shortening rapidly to wing tip, or more or less uniformly 

 shorter on middle half of costa, the hairs of wing veins in genereJ about 

 as long as those on middle of costa. Tibiae with a few regularly placed 

 very fine suberect hairs, and many shorter appressed flattened scale-like 

 hairs. Antennae with joints rather finely hairy to end, but without gen- 

 iculate or other spines. Palpi with coarser and longer hairs on joints 2 

 and 3, joint 3 also showing many shorter curved thickened hairs closely 

 set on outer surface, joints 4 and 5 showang only these thickened hairs 

 slightly shorter and flattened, gradually shortening toward tip of joint 5 

 and all subappressed. 



Antennae composed of fourteen joints besides the two swollen scape 

 joints, the first flagellar joint very elongate. Palpi composed of five seg- 

 ments, their average formula in female being approximately 5-10-12- 

 7- 1 6, but some slight variation has been noticed from these proportions. 

 The fifth joint appears to be composite, but no definite sutures are visible. 

 The mouth parts agree closely with those figured by Newstead for P. 

 papalasii. Venation normal. The above description applies equally to 

 both sexes, except that palpi of male seem more thickly haired and 

 last joint is not quite so elongate ; the proboscis of female nearly equals 

 head plus clypeus, that of male being only about two-thirds such length. 



Hind tibiae of female very elongate, longer than middle tibiae, front 

 tibiae still shorter than middle ones, but all elongate. Front and middle 

 metatarsi of female about equal, the hind ones slightly longer. Legs of 

 male not so elongate as those of female, the tibiae being shorter, hind and 

 middle tibiae about equal, hind metatarsi longer than middle ones. Male 

 hypopygium in general similar to that of P. perniciosus as figured by 

 Newstead. Intromittent organ of penis widely exserted. 



