MONOGRAPHIA CHALCIDITUM. 465 



22. Brachycerus undatus, feeds on the leaves of the Arum 

 arisarum, on which we found it in great abundance in October 

 in Corfu, when in company with Mr. Kuper. Brachycerus 

 barbarus feeds on the medicinal squill ; several are generally 

 found at the heart of the leaves near the root, and are thus 

 common, but not frequently met with by one unacquainted with 

 their habits. They are nearly as hard in shell as the diamond- 

 beetle, and they generally acquire a tinge of white from the 

 clay, in which the squill grows, adhering to them. Brachy- 

 cerus algirus feeds on the leaves of a very large and handsome 

 species of lily, which grows in sea sand, and flowers in August ; 

 the beetle, however, appears earlier in the season, but rather 

 later than B. barbarus. I took this species at Lixurie, 

 Cephalonia. 



Art. XLV. — Monographia Chalciditum. By Francis 

 Walker. 



{Continued from page 206.) 



the green myriads in the peopled grass." 



Pteromalus. 

 Sectio XXV. Mas et Fem. 



Mas. — Corpus angustum : caput thorace vix latius : antennae 

 filiformes, crassae, corpore paullo breviores ; articuli 5°. ad 10 um . 

 curtantes; clava fusiformis, articulo 10°. duplo longior: thorax 

 sublinearis, convexus : prothorax brevis : mesothoracis parap- 

 sidum suturae conspicuae : metathorax bene determinatus : abdo- 

 men lineare, depressum, thoracis longitudine at vix latitudine ; 

 segmentum l um . magnum ; sequentia breviora, subsequalia : 

 sexualia exerta : alae longse ; nervus cubitalis radiali brevior. 



Fem. — Corpus latius : antennae crassiores, clavatae, corporis dimidio 

 paullo breviores ; clava brevi-ovata, articulo 10°. plus duplo 

 longior et paullo latior : abdomen ovatum, subtus angulatura, 

 apice elevatum et acuminatum, thoracis longitudine : oviductus 

 occultus. 



NO. V. VOL. III. 3 O 



