7. Filaments of the harpago long. 



TABLES OF PSOROPHORA 529 



2. Harpago with slightly expanded tip bearing a row of setae 3 



Harpago with large circular capitate tip, covered with setae 5 



3. Tip of harpago widened ; clasp filament widened outwardly, smooth 



S(vva Dyar & Knab (p. 537) 

 Tip of harpago widened; clasp filament slender, bent at tip, with a row of 



setae within 4 



4. Tip of harpe simply sharply pointed cilipes Fabriclus (p. 540) 



Tip of harpe notched, the point arising from apex ciliata Fabricius (p. 533) 



5. Inner lobe of the clasp filament slender, the tip bent at right angles 



virescens Dyar & Knab (p. 543) 

 Inner lobe of clasp filament stouter, the apical part bent over 



howardii Coquillett (p. 546) 

 Cposticatus Wiedemann (p. 551) 



6. Outer filament of harpago expanded and curled \ S^^J^oya?! Knab'fp? 562) 



Ipazosi Pazos (p. 566) 



Outer filament expanded but not curled discolor Coquillett (p. 579) 



Outer filament not enlarged, similar to the others 7 



' jamaicensis Theobald (p. 584) 

 toltecum Dyar & Knab (p. 589) 

 columbice Dyar & Knab (p. 592) 

 floridense Dyar & Knab (p. 587) 

 cingulatus Fabricius (p. 598) 

 infine Dyar & Knab (p. 596) 



Filaments of the harpago short 8 



fharuspicus Dyar & Knab (p. 605) 



8. Clasp filament expanded, smooth J pygmaea Theobald (p. 602) 



I insularius Dyar & Knab (p. 606) 

 .signipennis Coquillett (p. 577) 

 Clasp filament expanded, roughened and spiny on the margin 



cyanescens Coquillett (p. 568) 



The following species are omitted, as we possess no males: terminalis Coq., 

 mexicanus Bell., coffini D. & K., lutzii Theob., discnicians Walk., texanum D. 

 & K., champerico D. & K., johnstonii Grabh. 



LARV.E. 



1. Mouth brushes well separated, prehensile 14 



Mouth brushes normal 2 



2. Antennae long and prominent, longer than the head 3 



Antennae moderate or short, shorter than the head 8 



3. Antennae strongly inflated and distorted discolor Coquillett (p. 580) 



Antennae not so 4 



4. Anal segment longer than wide 5 



Anal segment shorter than wide 7 



5. Comb of the eighth segment of six or seven subequal spines 6 



Comb of five spines, the upper and lower small discrucians Walker (p. 571) 



6. Antennae stouter, more heavily spined posticatus Wiedemann (p. 551) 



Antennae less stout, less heavily spined sayi Dyar & Knab (p. 556) 



7. Pecten teeth of the tube with 4 long sharp spines. . infine Dyar & Knab (p. 596) 

 Pecten teeth of the tube with two rounded branches 



cingulatus Fabricius (p. 599) 



8. Air-tube fusiform, inflated ; anal gills normal 9 



Air-tube barrel-shaped; teeth of comb separate; anal gills bud-shaped 13 



9. Air-tube with two long hairs at the tip cyanescens Coquillett (p. 568) 



Air-tube without such hairs 10 



10. Antennae black on the outer half; tube with four or five pecten teeth 



scattered along basal half 11 



Antenna all pale; the four spines of the tube restricted to the basal third 



of the tube signipennis Coquillett (p. 577) 



11. Air-tube pecten of two to four teeth 12 



^. ^ ^ ^^ f co^ttmbtcp Dyar & Knab (p. 592) 



Air-tube pecten of four to five teeth J floridense Dyar & Knab (p. 588) 



[ toltecum Dyar & Knab (p. 590) 



12. Antennae nearly as long as head ; dorsal head-hairs multiple 



jamaicensis Theobald (p. 584) 

 Antennae half as long as the head; dorsal head-hairs single 



pygmaea Theobald (p. 602) 



