Mr. F. Walker on some new species of Chalcidites. 209 
coppery, smooth, shining, concave above, deeply keeled beneath, 
compressed at the tip which is bright purple, a little longer but 
very much narrower than the chest; metapodeon occupying full 
one-third of the back; octoon and following segments short: legs 
tawny; middle legs paler than the fore-legs and dilated as usual ; 
tips of their feet brown; hind-legs piceous; their shanks tawny with 
piceous tips : wings narrow, nearly colourless except their tips, which 
are gray; veins piceous ; ulna about one-third of the length of the 
humerus; radius much longer than the ulna; cubitus shorter than 
the ulna, and forming with the radius a more acute angle than occurs 
in Hncyrtus ; brand extremely small. Length of the body $ line ; of 
the wings 1} line. 
Eulophus Amempsinus. 
Tetrastichus flavifrons, fem. Nigro-viridis, capite fulvo, abdomine 
nigro-purpureo, antennis fuscis, pedibus fulvis, metafemoribus 
piceis, alis limpidis. 
Body smooth, shining: head tawny, broad, very short, impressed 
between the eyes, bright yellow and somewhat dilated about the 
region of the mouth, a little broader than the chest : eyes and eyelets 
bright red, the former prominent: feelers pale brown, subclavate, 
rather stout, more than half the length of the body ; first joint long, 
dilated; second tawny, cup-shaped; the following joints from the 
third to the sixth successively increasing in breadth and decreasing 
in length; club long-elliptical, broader than the sixth joint and more 
than twice its length: chest short-elliptical, convex, greenish black, 
rather broad: fore-chest very short, its length not more than one- 
tenth of its breadth: shield of the mid-chest large; sutures of the 
parapsides very distinct and strongly marked, converging towards 
the hind-border of the shield; axille parted by one-third of the 
breadth of the chest; scutcheon short, obconical, with two parallel 
sutures along its back: hind-chest short and broad, hardly narrower 
behind : petiole extremely short, so that the abdomen appears sessile : 
abdomen short-elliptical, flat, purplish black, a little shorter and 
narrower than the chest ; metapodeon and three following segments 
of moderate length; the rest very short: oviduct pale tawny: legs pale 
tawny ; tips of feet brown; hind-thighs mostly piceous : wings broad, 
colourless, pubescent, ciliated ; veins pale tawny ; ulna much longer 
than the humerus; radius shorter than the ulna; cubitus not one- 
third of the length of the radius; brand extremely small. Length of 
the body 4 line ; of the wings 14 line. 
Tetrastichus Silius, fem. Nigro-eneus, antennis fulvis basi piceis, 
pedibus fulvis, femoribus piceis, alis limpidis. 
Body smooth, shining: head black, broad, very short, impressed 
between the eyes, very littie broader than the chest : eyes and eye- 
lets bright red, the former prominent : jaws ferruginous : feelers dull 
tawny, subclavate, rather more than half the length of the body ; 
first joint piceous ; second cup-shaped ; the following joints from the 
Ann. & Mag. N. Hist. Ser. 2. Vol. ii. 14 
