ENTOMOLOGY JHPTKRA. 389 



ments, though only five may be apparent, as the sixth is very short iu the 

 female, aud in the male it is bent inwards as a cover to the genitals. The 

 different forms of this segment are of moment in the arrangement of the 

 Ephydrini. The author has taken pains iu estimating the comparative value 

 of the several distinctive characters. 



The following is his arrangement : 



Tribe I. The fourth main vein inclined to the fore edge beyond the prin- 

 cipal cross vein of the wing. Gen. 1. OchtJiera, Latr., 1 species (0. mantis, 

 Deg.) 



Tribe II. The third and fourth veins parallel beyond the cross vein. 

 Gen. 2. Ephydra, Fall. Section 1. Ephydra proper. The snaffle (epistoma) 

 vaulted, bristly : . its upper face protuberant, with a tubercle : ( J species, 

 of them new (E. riparia, Fall.) /3. its upper face with a convex slope, 

 without the tubercle : 3 species, 2 of them new (E. quadrata, Fall.) Sect. 2. 

 Epipela. The epistoma vaulted, with a keeled tubercle above : 1 (new) 

 species, E. notata, [=- spilota, Curt.] Sect. 3. Parydra. The epistoma 

 arched, rather conically, towards the cavity of the mouth : six species, 2 of 

 them new (E.aquila, Fall.) Gen. 3. Noti/phila,-~Ea!k. A. The rib-vein termi- 

 nating at the end of the third main-vein. Sect. I. Notiphila proper. Subdiv. 

 1 . Of a blackish colour, with peculiar appendages to the end of the abdomen 

 in the male : (Dichcsta, Mg.), 1 species (N. caudata, Fall.) Subdiv. 2. The 

 colour gray ; the abdomen of the male simple (Notiphila, Macq.) a. The 

 face as broad as long : 4 species, 3 of them new (N. cinerea, Fall.) b. The 

 length greater than the breadth of the face : 6 species, 5 of them new (N. 

 riparia, Mg.) B. The rib-vein terminating at the end of the fourth main 

 vein. Sect. 2. Telmatobia: 3 species, two of them new (N. <enea, Fall.) 

 Sect. 3. Hydrellia, Macq. a. The second segment of the rib-vein longer 

 than the third: 9 species, 7 of them new (N.Jtavicornis, Fall.) b. [The 

 second segment not longer than the third?] 8 species. Gen. 4. Psilopa, 

 Fall. Sect. 1. Clasiopa : 7 species, 5 of them new (N. obscurella, Fall.) 

 Sect. 2. Psilopa proper, a. The abdomen ovate, with the end a little 

 pointed : 3 species, 2 of them new (Ps. nitidula,) Fall. b. The abdomen 

 elliptic, blunt : 1 species, (Ps. madizans, Fall.) Gen. 5. Discomyza, 2 species 

 (D. incurva, Fall.) 



Von Heyden (Ent. Zeit. 203) has discovered in the saltworks at Neu- 

 heim a new fly, Ceenia halophila, the larva of which lives in the salt water in 

 the brine-pans, and also in the passages from the evaporating (graduating) 

 houses, in the first and second stages where the water is charged with salt 

 up to the ratio of Gf per cent. It does not occur in the third stage when 

 the proportion is raised to 27 per cent. The author suspects that the fly 

 may be identical with the Ephydra salinaria, Bouche, which breeds in similar 

 situations ; but this is not the case. The latter (which I also have met with 



