Huncjekfohd: NEPin.ii in America. 451 



7. The hind femora longer, surpassing the middle of the penultimate body 

 segment, often almost attaining its caudal margin. Femora not so de- 

 veloped in R. fusca. 



8. Hind tarus of R. amtralis one-sixth or less of the tibia; one-fifth or less 

 in R. fusca P. R. 



9. Metaxyphus usually longer. 



10. The female operculum angulate on its ventral line, while it slopes gradu- 

 ally and is longer in R. jusca P. B. 



11. The respiratory filaments are relatively longer in R. austtralis sp. new, than, 

 in R. fusca P. B. 



12. The front femora lack the apical tooth; R. fusca P. B. has one more or 

 less marked. 



Ranatra drakei, sp. new. 



Size. Length from tip of beak to tip of abdomen 35 mm. to 46 mm.; iu 

 addition to this, the respiratory filaments are from 28 mm. to 44 mm. long. 



Color. All the specimens in the series studied are yellowish brown with legs 

 and tegmena overcast with an orange tinge. 



Shape. A long, slender species with prominent eyes; long, slender protho- 

 rax; hind femora surpassing the middle of the last abdominal segment, and a 

 ver>' long respiratory tube. 



Structural peculiarities. The eyes very prominent, transverse diameter 

 greater than interocular space; jugse prominent and divergent; antennae 

 with lateral prolongation of penultimate segment a little more than half the 

 length of the ultimate segment; prothorax slender, the anterior portion 

 measured on the median dorsal line 2V^ times length of the posterior swollen 

 part. The length of abdomen is to length of pronotum as 2^/4 is to 1; the 

 respiratory filaments long, as long as entire body in many of the specimens, 

 greatly surpassing the limbs. The claspers of the male are shown on plate 

 XLVI, figure 11. The limbs are long and slender; front fenlora slender, median 

 tooth considerably nearer apex than base; distal tooth well marked and 

 located at some distance away from the tibial joint, this distance being about 

 one-fourth the length of that part of femur lying in front of the median 

 tooth (see fig. 3, pi. XLYIII) ; middle and hind femora long; distal end of 

 hind femora attaining, or nearly attaining, the caudal margin of the penulti- 

 mate abdominal segment; the ratio between femora and tibia not quite but 

 nearly as great as in R. buenoi, sp. new. See plate L, photograph 4 of para- 

 type specimen.) 



Notes. Described from eleven specimens, seven males and four 

 females, taken at Gainesville, Fla., ten of them by Carl Drake, June, 

 1918, and one specimen taken March 18, 1915, collector unknown; 

 holotype in collection of Carl Drake, allotype in University of Kan- 

 sas collection, paratypes in the above collections and in that of the 

 author. 



This species has the general appearance of R. buenoi, due to the 

 large eyes and elongate, slender body. It differs from that species, 

 however, in the front femur possessing a well-defined apical tooth; 



