ONYCHIA WESTWOODI. 177 



the fundamental characters given by Haliday for 

 Onychia, namely, that the subcostal nervure is not con- 

 tinued to the rib. There is, therefore, considerable un- 

 certainty as to what formed the type for Onychia, 

 Haliday ; but the statements that the scutellum was 

 channelled throughout (there is no mention of its 

 ending in a spine), and that the subcostal nervure 

 did not reach to the costa, sufficiently prove that it was 

 congeneric with 0. Westwoodi, Dbm. 



There is no evidence that Aspicera ediogaster is 

 British. 



1. ONYCHIA WESTWOODI. 

 PL VII, fig. 6. 



Callaspidia TPestwoodi, Dbm., Ony. och Call., 15, Tab. i, fig. 12. 



de Fonscolombei, Dbm., 1. c., 13. 

 Xyalaspis rugosus, Htg., Germ. Zeit., iv, 417. 

 Callaspidia Dufouri, Giraud, Verb. z.-b. Ges. Wien, x, 160. 

 Onychia nigripes, Cam., Trans. Ent. Soc., 1879, 112. 



Black ; the apices of the basal joints of flagellum, the base of petiole, 

 the knees (the anterior broadly), and four front tarsi, reddish, the tarsi 

 with a testaceous tinge. Antennae as long as the body, the apical 

 joints a very little thicker than the basal ; the first is nearly double 

 the length of the second, the third is the longest, the fourth is a little 

 longer than the fifth, the rest become shorter and thicker to the last, 

 which is more globular and more truncated at the apex ; the thirteenth 

 is longer than the preceding two, being nearly as long as the third. 

 Head shining, rugose, the sides longitudinally. Thorax opaque, rugose, 

 the pronotum obliquely, the mesonotum transversely. The mesonotum 

 bears five stout keels, the lateral and the central complete, the inter- 

 mediate not reaching the middle; the central at the base bifurcates, 

 forming an area about three times of the length of the base. Scutellum 

 shining, rough, irregular ; the basal keels pale testaceous. Median 

 segment rugose, the sides covered with longish white hair. Abdo- 

 men shining. Wings hyaline, yellowish along the nervures. 



Length nearly 5 mm. 



Kirchner (Cat., p. 37) states that he bred four speci- 

 mens from beetle larvao, which fed on Caltha palustris. 

 Onychia notata, Fons., was reared by Ferris from 

 Syrphus larvae (Ann. Soc. Ent. Fr. 5 1877, p. 417). 



Rare. Norwich (J. B. Bridgman). 



Continental distribution : Sweden, Germany, Aus- 

 tria, France. 



VOL. III. 12 



