PHILIP P. CALVERT 389 



Spinps of the anterior lamina reaching caudad beyond the level of the hind 

 edge of the hamular process, in profile view curved so as to be subparallel to 

 the ventral margin of two. 



Basal part of anterior hamiile extending along the ventral margin of the 

 tergite caudad of the level of the hind edge of the hamular process for a dis- 

 tance equal to about one-half of the distance from that edge to the hind edge 

 of the sternite of one. 



Planes of the posterior part of the hamular process caudo-ventral (rather 

 than subvertical) and transverse (rather than subtransverse) ; mesal angle of 

 the hind edge of the process continued directly on nearly the same horizontal 

 level into the anterior part of the process. 



9 . Styles of the genital valves .84-.9 mm. long, nearly as long as the sternite 

 of ten (1.0 mm. on mid-dorsal line). Three spines on the sternite of segment 

 ten, each about .55 mm. long. 



Material examined: ScT, 4 9, all cited in Biologia Centrali-Americana.^ 



septima (Plate XXXIV, fig. 33.) 



cf . Ventral margins of tergite of two with a submarginal row or cluster of 

 six to eight black denticles which occupy from .7-.76 to .9-.93 of the length of 

 the segment, measuring from the hind edge of the sternite of one, i. e., in the 

 posterior, diverging portion of these margins. 



Spines of the anterior lamina reaching caudad beyond the level of the hind 

 edge of the hamular process, in profile view nearh' as described for trifida. 



Basal part of anterior hamule nearly as stated for trifida. 



Planes of posterior part of hamular process caudo-ventral and latero- ventral; 

 mesal angle of hind edge of process not continued directl}' into the anterior 

 part of the process but lying somewhat ventral to the place of union. 



9 . Styles of genital valves .63-.7 mm. long, distinctly shorter than the 

 tergite of ten (.84-1.0 mm. on mid-dorsal line). Three spines on sternite of ten, 

 .21-35 mm. long. 



Material examined: 3cr, 6 9. all cited in Biologia Ceiitrali-.Vmericana, 

 Xeuroptera, 192. 



nerrosa (Plate XXXI\'., fig. 32.) 



cf . Ventral margiiLS of tergite of two with a submarginal row of nine to 

 thirteen black denticles which extend from .36 or .4 to .67 of the segment's 

 length, i. e., in the anterior, converging portion of these margins. 



Spines of anterior lamina variable, reaching caudad not as far as, or beyond, 

 the level of the hind edge of the hanuilar ()rocess, in profile view straight, form- 

 ing a decided angle with the ventral margin of two. 



Basal part of anterior hamule extending etc. for a distance varying from 

 subequal to to about one-half of that from the hind edge of the process to the 

 hind edge of the sternite of one. 



Planes of posterior part of hamular process sub\ertical and transverse; 

 mesal angle of hind edge of process not continued directly into the anterior 

 part but lying much ventrad to the place of union. 



9- Styles of genital valves 1.26-1.5 mm. long, distinctly longer than the 



ssNeur., 191. 



TKANS. .\M. EXT. SOC, XLV. 



