84 SMITHSONIAN MISCELLANEOUS COLLECTIONS [VOL. 50 



monidse, sometimes those of the Vespidse, and sometimes those of the 

 Anthophilidse. The subbasal hooks are also very diversely developed, 

 and sometimes absent altogether. The marginal bristles are not very 

 well developed. It is remarkable that in this family they are often 

 found in the middle of the series of distal hooks. 

 Twenty-two species were examined. 



IX. Vespid.e 



The distal hooks are very stout, strongly curved, and numerous. 

 The series begins before or at the point of insertion of the costal vein 

 (pi. vii, fig. 9). Subbasal hooks are absent. The marginal bristles 

 are always numerous and well developed. 



Nine species were examined, among them a larger number of 

 specimens of Vespa germanica Fabr., Vespa vulgaris, and Vespa 

 rafa L. 



X. Anthophilidje 



The distal hooks are always stout, strongly curved, and numerous. 

 The series begins before, at, or behind the insertion of the cross-vein 

 (pi. vii, fig. 1 ; pi. viii, figs. 11, 12, 13). The subbasal hooks, wanting 

 in many forms, when present, short, stumpy, very slightly bent, 

 and placed at irregular intervals between the base of the wing and the 

 series of distal hooks (pi. vm, fig. 13). Strongly developed marginal 

 bristles are always present. 



Eighteen species were examined, among them a larger number of 

 specimens of Bombus terrestis, hortorum, and lapidarius L., Psithy- 

 rus rupestris Lep., and Apis melliiica L. 



VII. Literature Consulted 



1879. Adolph, G. E. ; Uber InsektenfliAgel. Diss. In Acta Ac. Leop., vol. 41, 

 pp. 215-282, pis. 27-32. 



1883. : Zur Morphologie der Hymenopterenfliigel ... In Acta Ac. 



Leop., vol. 46, pp. 43-132, pis. 1-6. 



1887. Andre, E. : La structure et la biologie des Insectes et particulierement 

 des ceux appartenant a l'ordre des Hymenopteres (mouches etc.) 

 Beaune. 



1899. Carpenter, G. H. : Insects, their structure and life. A primer of Ento- 

 mology. London. 



1822. ChabriEr, Y. : Essai sur le vol des insectes. . . . Paris. 



1894. Dalla Torre, C. W. : Catalogus Hymenopterorum. Leipzig. 



1901. Fernald, C. H. : Marginal wing-bristles in Lepidoptera. In Entomo- 

 logist, vol. 34, p. 146. 



i860. Gray, T. E. : On the hooks on the front edge of the hind wings of 

 certain Hymenoptera. In Ann. Nat. Hist., ser. 3, vol. 5, pp. 339-342. 



