688 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxvii. 



the lateral lobes. Median lobe very strongly convex, nearly semi- 

 circular, with a long fringe of flattened scales along its free border. 

 Lateral lobes rather short, stout. Movable hook long, arcurate, end 

 hook short and strong and moderate!}" incurved. Inner margin with 

 a series of about a dozen minute quadrangular teeth, diminishing in 

 size proximally and extending upon the base of the end hook, where 

 the last two or three are likewise smaller, , 



Thorax somewhat compressed. Prothoracic disk flattened, continu- 

 ing the slope of the top of the head, bearing a pair of large l^are scars 

 connected by a line across the middle. Legs closeh^ appressed to the 

 body, the fore and middle tibiie very hairy and armed with small 

 recurved burrowing hooks. Middle legs slightly closer together at 

 base than are the fore legs, and about half as far apart as are the hind 

 legs. Wing cases reaching the middle of the fourth abdominal seg- 

 ment. 



Abdomen widest before the middle, slowly tapering to the tip and 

 little depressed. Dorsal hooks on .segments 2-9 regularly increasmg 

 in length and sharpness posteriorly. Lateral spines on segments T-9 

 minute, straight, appressed, uuich smaller than the dorsal hooks on the 

 corresponding segments. Middle abdominal segments of equal length, 

 segment 8 slightly longer, 9 one-fourth longer, and 10 one-half longer 

 than these. Appendages as long as the ninth segment, slender and 

 sharp, the laterals scarcely shorter than the others. The venti-al lon- 

 gitudinal grooves of the abdomen end just within the lateral spines of 

 the ninth segment. 



But one of the nymphs is in a sufficiently good state of preservation 

 for making out the venation of the wings, but in this one I have been 

 able to compare the venation in close detail with that of the wings of 

 Goinphoides stigmatm^ and have found entire agreement. 



PHYLLOGOMPHUS iETHIOPS Selys.? 

 Plate XXXVIII, figs. 2, 3. 



"No. 28914, Congo, J. H. Camp." Length 42 mm., abdomen 30 

 mm., hind femur 5 nun., width of head 6 mm., of al)domen 9 mm. 



Bod}" elongate, widest across the middle of the abdomen, moderately 

 depressed. Head depressed, rather broadly triangular, with obtuse 

 angles. Labrum prominent, with a dense fringe of tawny hair that 

 is continued laterally beneath the eyes, ending there in a long, con- 

 spicuous tuft. Ocelli well marked, the lateral ones touching the eyes. 

 Labium (Plate XXXVIII, fig. 3) reaching posteriorly as far as the rear 

 of the prothorax; mentum flat, with parallel side; median lobe angu- 

 lately concave in front, its border armed with about a dozen spinelike 

 teeth on each side that are longest externally ; lateral lobes moderate, 

 with long movable hook; end hook arcurate, slender, with a comb of 

 12-15 straight spinelike teeth on its inner margin, longest proximally, 



