^6 THE FAUNA OF SCOTLAND. 



Rhodites rosarum and Dryophanta again%, recorded from 

 the South of England. The distribution of the parasitic 

 species is too little known to make any remarks on their 

 distribution of any value. 



SYNOPSIS OF THE GENERA AS DEFINED BY Dr. MAYR. 



Females. 



1 (4) Wingless. 



2 (3) Furrows of parapsides complete ; antennae 14-jointed; a short, 



thickish keel between the antennae ; head swollen behind 

 the eyes; ventral spine l-l^ times longer than broad, Biorhlza, 



3 (2) Farrows of parapsides incompleta; ant3nnae 13-14-joihted; no 



keel between the antennae; head not swollen behind; ven- 

 tral spine 2-2| times longer than broad, - - Trigonaspis. 



4 (1) Winged. 



5 (6) Petiole rugosely longitudinally striated, the second and third 



abdominal segments without any visible suture; fa^e obliquely 

 striated; frontal keels usually reaching to the ocelli; radial 

 cellule closed ; antennae 14-jointed, - - Sijuci^gus, 



'6 (5) Petiole smooth, not striated, frontal keels absent. 



"7 (8) Face with two distinct parallel keels going from the antennae 

 to the base of clypeus; antennae 12-joint3d; scutellum with 

 two f oveae at the base ; third ab lominal segment longer than 

 the second, closely united, but still with the suture visible, 

 the third segment covering the greater part of the abdoman ; 

 radial cellule closed; claws bifid, ... Ceroptres. 



8 (7) Face without keels. 



D (10) Hypopygium ploughshare- shaped, ending in a sharp point, and 

 without a distinct ventral spine; mesopleura with a distinct 

 longitudinal furrow, sometimes punctured; radial cellule 

 completely closed ; claws simple, - - - Rhodites, 



10 (9) Hypopygium not ending in a sharp point, incised beneath, and 



having a ventral spine. 



11 (12) Scutellum not separated from the mesonotum by a suture ; no 



ridge-like border behind the depression at base; furrows of 

 parapsides absent, or, if present, only reaching to the middle; 

 antennae and tibiae not hairy; antennae 13-15-jointed, 



Ncuroterus, 



