1917.] 229 



Plate VI. 

 Skill of fiill-frrown larva of i?. micans, portion of dorsum and of last segfrneuts 

 X 60, by Mr. F. N. Clark. The !<kin elements (cells) of both the warts 

 and general surface are flat or rounded. 



Plate \ai. 

 Skin of full-grown larva of P. aterrima, portion of dorsum X 60, and of last 

 segments X 30, by Mr. F. X. Clark. The skin elements (cells), both of 

 warts and general surface, are spinous or spicular. 



Reigate. 



Atiy. llth, 1917. 



NOTES ON THE COLLECTION OF BPJTISH HYMENOPTERA 

 (ACVLEATA) FORMED BY F. SMITH. 



BY H. C. L. PEEKINS, D.Sc, M.A., F.E.S. 

 (Concluded from 2^- 162.) 

 Turning to the Diplopfera, or true wasps, the solitary species 

 belonging to the subgenus Ancistrocerus of Odynerus were not well 

 understood in Smith's time, nor, in fact, until Saunders (following 

 Thomson) gave good characters for the separation of the more difficult 

 of these. In the collection, therefore, O. parietum L., parietinus L., 

 and callosus Thorns, are mixed up under the names parietum and 

 (fundrattis Panz., and there are other errors. 



0. reniformis Gmel. is wanting, the specimens so named being — the 

 one a very small Ancistrocerus ant Hope Panz., the other a common- 

 place A. parietum 2 • Syminorpilius crassicornis is represented by two 

 females, one from " Darenth Wood, July 1837," the other from Aber- 

 gavenny, 1868, where it also appears to have been found more recently 

 by Dr. Chapman (Saunders, Hjan. Acul. p. 169). Smith's supposed 6 

 of crassicornis (marked wath a ?) is only a, parietinus. 



In the social wasps we may note the specimens of Polistes gallicus 

 supposed to have been taken near Swanage by Mr. Home, and a P. higut- 

 totus, a species imported on ships to London, Liverpool, and Penzance 

 in 1866, '67, and '68. The series of Vcspa austriaca Panz. (arborea 

 Sm.) consists of males and females and a supposed worker, which is a 

 quite ordinary ruj'a ^ . One supposed d also obviously belongs to the 

 latter species, and one 9 is much more red-marked than ordinary rtffa $ , 

 but is a true arborea. From the nest of V. rufa Smith bred Chrjjsis 

 ignita and the Ichneumonid Chrysonomon vesparum, the latter also from 

 Y. vulgaris. 



In the Fossorial Hymenoptera there is a series of Metlioca, ^ and 

 5 , once considered a very rare insect, and of Sapyga clai'icornis from 



