474 ^Ir. F. Smitli's (hscrlptions of new species 



one being the Blennocampa athimbrata, Klug ; tliis may 

 be the same insect recorded by Captain Hiitton under the 

 name of" B. ccrusi ; this European species has doubtless 

 been imjiorted with trees or flowers. In the Keise der 

 Novara, Dr. Sioliel has described a species of Prosojyls, 

 no doubt the first from New Zealand ; three are added to 

 the list in the present paper. It is somewhat remarkable 

 that only one species of the family Thijnuidoi should have 

 been discovered, IHuujifj aster Novuroi, described by De 

 Saussure ; as both Tasmania and Australia are rich in 

 species. The genera Jih>/ssa, Mesostenus and Devecyrta, 

 1 believe are for the first time added to the Hymenopterous 

 faima of New Zealand, the first by one of the finest species 

 of the genus hitherto discovered. 



TENTHREDINID7E. 

 Earn. SIRICID.E:. 



Derecyrta deceptus. (PI. IV. fig. 6.) 



Female. — Length 5 lines. Ferruginous, abdomen rufo- 

 fulvous, variegated with yellowish-white. Head globose, 

 shining, and with scattered punctures; a broad yellowish- 

 white line round the orbits of the eyes, slightly interrujited 

 at their vertex ; two lines of the same colour run longi- 

 tudinally over the vertex, and unite "with another line that 

 borders its posterior margin ; the ch^oeus and mandibles 

 yelloAvish, the latter obliquely truncate, and with four black 

 teeth ; the flagellum black, except its basal joint and the 

 curved scape, both of which are ferruginous. Thorax : 

 the prothorax forming a short neck ; a line on each side 

 of its posterior margin ruiming to the base of the Avings ; 

 two oblique stripes on the mesothorax inclining inwardly, 

 and uniting with a transverse waved stripe at its basal 

 margin, two spots on the scutellimi and also the post- 

 scutellum, yellowish-white ; wings fulvo-hy aline, the 

 nervures feiTuginous, the stigma fuscous ; a large yellowish 

 spot beneath tlie wings, and the posterior coxa3 pale 

 beneath ; the legs pale ferruginous. Abdomen yellowish 

 towards the base. 



Prof. Westwood has figured three species of this genus 

 in his " Thesaurus Entomologicus Oxoniensis," two of 

 which are from Brazil, the other from Chili. This species 

 bears a very strong resemblance to Tenthredo nnssafa of 

 Linnaeus. 



