( xlviii ) 



"1. These specimens are, individually considered, less re- 

 moved from Mid-European forms than the var. Hispanica. 



" 2. Nevertheless they approach each other at least quite as 

 closely as the Hispanica do. 



" 3. They especially do this, by an alteration in the form of 

 the rusty patch, which is unusual to either species and more 

 like Goante or Neoridas. 



"4. Since Guadarrama is further from Mid-Europe than 

 Canales, var. Hispanica must be regarded as more local than 

 necessarily Spanish. 



"5. Perhaps the most important point is that though they 

 do it by a somewhat different variation, they keep to the 

 Spanish role of the two species of associating together and 

 resembling each othei", a feature very rare or unknown in 

 Mid-Europe. 



" If it is permissible to found named varieties on single speci- 

 mens, I would suggest that they be called penalarai. E. evias 

 var. penalaree, differs from var. hispanica in having all three 

 apical ocelli equally developed, and the rusty band less yellow. 

 I think it is very possible however that a further series would 

 render it impossible to distinguish Penalarse. from Hispanica. 

 E. stygne var. p)enalaris. This does not resemble any named 

 or, so far as I am aware, known, variety in its most marked 

 peculiarity, the straight inner margin of the rusty band. I 

 should expect further specimens to agree in this and so make 

 this var. a well-defined race." 



Dr. Chapman also exhibited the ova, larval work, pupae and 

 imagines of Anthomyia, sp., (?) a dipteron that lays its eggs on 

 a fungus, Ejyichloe typhina, Berk., common in June on grass 

 stems. He had often wondered at the curious way of life of 

 this larva, living under a case and burrowing out on the surface 

 of the fungus, making labyrinthine tracks where it ate the in- 

 cipient spore-bearing layer. As he could learn nothing more 

 about it he determined to breed it in order to be able to dis- 

 cover its name. The specimens exhibited were the result. He 

 had already found ova laid this year on May 27th. Mr. G. 

 H. Yerrall afterwards determined the species to be the 

 Anthomyia spreta of Giraud (Ann. Soc. Ent. Fr., 1872, pp. 

 503-506) and Schiner, but not necessarily of Meigen, the 



