278 H. A. HAGEN. 



which is nevertheless depressed except on tip; the two basal globular, third joint 

 less than thrice as long, cylindrical, bent up, scarcely thicker on tip, hairy below; 

 fourth very small, short, linear; mask reaching half way between fore- and mid- 

 dle legs, large, one-third longer than broad, narrowed to base, a little more in 

 basal third, channeled below, sides bent up: middle third of front border pro- 

 duced in a small short rounded lobe, with a short comb of bent up, pointed, more 

 distant scales; palpus short, broad, with slender bent down end hook and four 

 teeth before nearly as long and as strong as the end hook ; movable hook long, 

 arcuate, sharp; wing cases reaching end of third segment, margins with long 

 hairs; abdomen very long (45 mm.), spindle shaped, tapering slowly to end of 9th 

 segment; venter less rounded, lateral margin thickened ; segments of nearly 

 equal length. 9th a little shorter; 10th very long (IS mm.), not full half the 

 length of abdomen, very thin (1.5 mm.), cylindrical ; lateral edge of segments 7 

 to 9 below with a thin fringe of long hair, lateral spines only on segment 9, very 

 short and blunt ; sharp dorsal hooks on 2 and 3, on 4 to 9 a broad apical rounded 

 tubercle, sometimes with a very small short spine; sears with several spots and 

 a superior, short, oblique, snow-white band ; genitals marked ; ventral sutures end- 

 ing on the apical angles of 9th segment; middle space nearly twice as large as the 

 laterals: anal appendages very short, about as long as segment 10 is broad, of 

 equal length ; laterals black, very sharp, apical half narrower, the three other 

 blunt, pale, membranaceous, the basal half of the middle appendage of male 

 above thickened, triangular and horny black as the laterals; legs short, moder- 

 ately strong, hairy, four anteriors equally distant, hind legs more separated ; four' 

 anteriors burrowing legs, claws short, sharp, arcuate, hind legs longer, more slen- 

 der, reaching 6th segment, third joint of tarsi as long as the two basal; claws 

 sharp, long, less arcuate. 



Aphylla producta is not yet recorded from Florida, but as it is very 

 common in Cuba, the supposition is very probable, if the nympha be- 

 longs at all to a known species. 



Genus Hagenias (raised). 

 Selys Monogr. Gomphines p. 2.38. 



The prominent characters of the nymphae are the broad, short, circu- 

 lar, very flat abdomen, the flat, large, circular third joint of antennae, 

 which is cut straight internally and therefore very approximate to the 

 opposite one, the large, flat, running legs, the hind ones much longer 

 than the abdomen, and the middle legs more separated at base than the 

 forelegs ; prothorax stigma free. The nymphae of H. hrevistylus and 

 japonicus look so difi"erent from all nymphae of Udonata, that there is 

 no mistake possible j to a certain manner they are mimicked by Macromia, 

 The distance of the legs, the ventral sutures of abdomen, and the lateral 

 suture, which is entirely ventral and separated from margin to a con- 

 siderable extent, exclude the nymphae of Hagenius from Gomphus. 



The supposed nymphae of H. ? nanus is apparently related to Hagenius, 

 but difi'ers by the elongate third joint of antennae, mask and palpus, the 



