Vol. xxvi] 



ENTOMOLOGICAL NEWS. 



199 



before us shows very little variation in either size or colora- 

 tion. 8 



MKASUREMENTS (IN MILLIMETERS) 



Specimens Examined, 26 ; 8 males and 18 females. 



Bartica, British Guiana, December 19 to 24, 1912 (H. S. 

 Parish), i 5,4$ [A. N. S. P.]. 



Igarape Assu, Para, Brazil, January 17 to 23, 1912 (H. S 

 Parish), 7$, 14$ [A. N. S. P.]. 



EXPLANATION OF PLATE VI. 



The outlines of the entire insect are 4 times natural size; the others 

 are all greatly enlarged. 



1. Hygronemobius alleni (Morse). Miami, Florida, Female. Dor- 

 sal outline. 



i A. Same. Lateral outline of caudal tibia, internal. 

 iB. Same. Lateral outline of ovipositor. 



2. Hygronemobius liura new species. Type. Male. Dorsal outline. 

 2A. Same. Lateral outline of caudal tibia, external. 



26. Same. Lateral outline of caudal tibia, internal. 

 2C. Hygronemobius liura new species. Allotype. Female. Dorsal 

 outline. 



2D. Same. Lateral outline of ovipositor. 



3. Hygronemobius dissimilis (Saussure). Petropolis, Brazil. Male. 

 Dorsal outline. 



3A. Same. Lateral outline of caudal tibia, internal. 



4. Hygronemobius albipalpus (Saussure). Igarape Assu, Brazil. 

 Male. Dorsal outline. 



4A. Same. Lateral outline of caudal tibia, internal. 

 46. Hygronemobius albipalpus (Saussure). Igarape Assu, Brazil. 

 Female. Lateral outline of ovipositor. 



8. The number of spines of the dorsal margins of the caudal femora 

 is 3 and 3, absolutely constant in the species of the genus examined, as 

 are 4 and 4 in the species of Nemobius. Saussure has given in the 

 original description of this species 3 and 4 of these spines ; to have ob- 

 tained this result he must have counted the dorso-internal spur. These 

 spines in the material here studied are not as nearly opposite as in 

 Nemobius and are as a result distinctly alternating. 



9. This measurement is necessary but one of the most difficult to judge, 

 owing to the necessity of estimating the points on the curve of the pro- 

 notum where the dorsum runs into the lateral lobes. 



