96 PROCEEDINGS OF THE 



The following description will then have to be interpolated 

 betv/een P. ulmi and P. ijygmaea, at page 10. 



3^- Phaenusa hortulana. 



Tenthredo hortulana, Klug, I.e., 187 ; Fenusa hortulana, Hartig, 

 I.e., 26S, 1; (1) Messa hortulana, Stephens, I.e., 40, 1. 



Antennae a little longer than head and thorax, black above, 

 pale testaceous beneath ; the joints distinctly separated, slightly 

 projecting at the apex underneath; pilose; the 3d joint more 

 than double the length of 4th. Head smooth, shining, covered 

 with a short pile ; the sutures distinct, the antennal fovea largo, 

 but shallow, apex of clypeus semi-truncated; labrum large, 

 rounded ; clypeus and labrum white, mandibles brownish at the 

 tips ; eyes lead coloured. Thorax : tegulae, pronotum, and 

 pleurae broadly whitish testaceous, the pronotum being whiter 

 than the sides of the breast ; sternum and the lower fourth of the 

 sides black. Abdomen short and broad ; the ventral segments a 

 little whitish at their junction ; sheath of saw projecting, hairy 

 and curved. Legs whitish testaceous, the base of coxae black. 

 Wings almost hyaline, costa and stigma pale testaceous ; 2d sub- 

 marginal cellule not much longer than 1st, and a very little longer 

 than 3d, but much narrower at the apex than the last cellule ; 

 marginal nervure nearly interstitiate ; 2d recurrent received a 

 little in front of middle of 2d cellule. The cenchri are obscure, 

 and the blotch very small. Length 1 J lines. 



From jpygmaea (which it resembles in size, and in having the 

 tegulae white), hortulana is distinguished by having the pronotum 

 and pleurae white, and the legs of one colour; with alUpes it 

 agrees closely in the coloration of the legs, but otherwise differs 

 in the colour of antennae and thorax, and lastly, from immilio it is 

 to be known by the shorter and thicker antennae, the distinct 

 frontal sutures, the coloration of the thorax, clearer wings, nearly 

 interstitiate marginal nervure, and very much longer 2d sub- 

 marginal cellule, this being longer than in any of the other 

 species. 



Hortulana does not appear to be a common species either here 

 or on the Continent. There it has only been recorded from 

 Germany and France, and nothing is known concerning its larval 



life. 



With regard to the other species, I may add that I found the 



