1G Mr. P. Walker on some it ml escribed Species 



Lar. Oenei, Sch. — On dead and desiccated Thistles, Sardinia : 

 Kiister, loc. cit. xi. p. 94. 



Lar. ntgicoUis, Sch. — Carduacea?, May, June, July : Lucas, loc. cit. 

 p. 445, Algeria. 



Lar. albicans, Lucas, loc. cit. p. 445. — In capitula of Carduacea), 

 February, Algeria. 



Lar. Chevrolatii, Sch. — Along the stems of Thistles, Algeria : 

 Lucas, loc. cit. p. 446. 



Lar. cardopatiif Lucas, loc. cit. p. 446. — Vicinity of Cherchel, 

 Algeria ; with an account (after Dr. Mialhes) of the habits of the 

 larva, feeding on Cardopatium amethystinum, Sp., where it undergoes 

 all its transformations. 



Lar. nanus, Lucas, loc. cit. p. 447. — Under stones, Boudjarea 

 mountains, near Algiers, January. 



Lar. lineola, Dufour, Excursion Entomologique dans les mon- 

 tagnes de la vallee d'Ossau, in Bulletin Soc. Scienc. Lettr. et Arts do 

 Pau, 1843 ; on flowers of Compositse. 



III. — Characters of undescribed Species of the Genus Leucospis. 

 By F. Walker, F.L.S. 



The Leucospidce are very distinct from the other families of Chalci- 

 dites, and appear to be nearly as much allied to the Cynipites, and 

 to connect the two tribes. 



In New Caledonia they are represented by L. antiqua ; in the Aru 

 Islands by L. Aruera and Aruina ; in China by L. Sinensis ; in Hin- 

 dostan by L. atra, petiolata, and Quzeratensis ; in South Africa by 

 L. ornata and incarnata; in West Africa by Mdrres dicomas; in 

 North Africa by L. brevicauda, Fabric! i. and Algirica ; in Egypt by 

 L. miniata, frenata, scutellata, obsoleta, and intermedia ; in Arabia by 

 L. elegans ; in Tauria by L. aculeata and gibba ; in South Europe by 

 L. grandis, gigas, nigricornis, intermedia, Spinola?, varia, Biguetina, 

 dorsigera, rufonotata, clavata, Orohmanni, assimilis, and Sicelis ; in 

 Canada by L. Canadensis ; in the United States by L. Shuchtrdi, 

 subnotata, and basalis ; in Mexico by L. Klugii and Mexicana ; in 

 the West Indies by L. Cayennensis ; in South America by L. Hopei, 

 Caycnnensis, leucotehts, Santarema, Egaia. Tap>ayosa, and speifera, 

 and by Polistomorpha Surinamensis and sphegoides. 



It thus appears that the Mediterranean region is their chief habi- 

 tation, and there they have their most characteristic form, which is 

 more or less modified in several other districts. 



In North America and in China there is no alteration of the 



