206 [September, 



black at the extreme base, and darkened towards the apex. Antennse piceous, paler 

 beneath, with the 3rd joint beneath shorter than the 4th as in the $ , and the pro- 

 podeum densely clothed at the sides with silvery hairs, mesothorax almost glabrous, 

 being clothed with only very short hairs, posterior tibia; at the apex armed with 

 four or five dark spines. Abdomen with the 5th ventral segment longitudinally 

 impressed towards the apex and carinated down the middle, much as inferruginata. 



Long., 7 — 8 mm. 



This species is closely allied io ferruginata, but its rather smaller 

 size, the form of its antennge with their shorter 3rd joint, its darker 

 colour, the less hairy mesonotuin, and the silvery haired sides of the 

 propodeuui, will easily distinguish it. 



St. Ann's, Woking: 



August, 1900. 



POMPILUS {WESMAELINIUS) SANGUINOLENTUS, F. : AN 

 ADDITION TO THE BEITISH LIST. 



BT EDWARD SAUNDERS, P.L.S. 



A 2 of this beautiful little species was taken by Dr. Sharp on a 

 forest path between Holiday Hill and Emery Down, New Forest, on 

 July 18th of this year, in company with other Fossores, Mimesa hicolor, 

 Cerceris arenaria, Astata boops, &c. More were looked for without 

 success. This is one of the most interesting additions to our fauna that 

 has been made for many years. It is a very rare species everywhere, 

 although it has been recorded from North and Mid-Sweden, Belgium, 

 France, Germany, Saxony, Italy, Spain, and Eussia, and a variety 

 named nasufus, Moraw., occurs in Central Asia. 



It has been the cause of considerable confusion in nomenclature. 

 Dahlbom described it in his " Dispositio " under Isonotus ; this name 

 he withdrew as being pre-occupied in Coleoptera ; and in his " Hymen - 

 optera Europsea " he still suggested the possibility of its forming a 

 new genus, in which case he proposed for it the name of Homonotus ; 

 but in his Synoptical Tables at the end of the work he puts sanguino- 

 lentus into Scdius, and distinguishes Homonotus from that genus by 

 characters not existing in the species before us. Costa, therefore, in 

 his " Prospetto " in 1887 rejected the name Homonotus, and described 

 it under a new genus, Wesmaelinius. As, however, Kohl has united 

 the several allied groups under the one well-known name of Pompilus, 

 I have followed him as treating it as only a subgenus. 



It is abundantly distinct from any other British species, and Dr. 

 Sharp at once realized that he had captured something that would not 

 agree with anything in our lists. 



