182 Tlie Insects of Cambridgeshire 



with Allantus (? Maorophyia) nifipes, Linn, at tin- latter 

 locality ; I have found M. 12-punctata, Linn, at Wicken and 

 M. ribis at Burwell; Poecilostoma submutica, Cam. in Wicken 

 Fen and Nematus fletcheri, Bridg. at Burwell. Cimbex femo- 

 nttus, Cam., var. Griffini, is said to have occurred at Swaffham 

 Bulbeck and Ely in August; Abia sericea, Cam. on willows in 

 the Fens; and Pamphilus sylvaticus, Linn, at Wood Ditton. 

 Sirex noctilio, Fab. (juvencus, Fab.) is probably the species, 

 bought by Jenyns from a man who found it commonly annui^ 

 spruce firs at Fulbourn in June and July, 1837, though it is 

 called 8. dupkx, Shuck. ( = & caeruleus, Fab.), an American 

 species, never found in Britain though it may possibly have 

 been imported. Its relative, the xylophagous Xiphy<lri<i />r- 

 longata, Geof. (dromedarius, Fab.) has been found upon 

 willows between Ely and Littleport. 



Several interesting fossors, wasps and bees have been 

 noticed, of which not the least rare is Myrmeci/tc Isitmlld, 

 Curt., which Jenyns found at Swaffham Bulbeck in Sept. 1843, 

 and Mutilla ruftpes, Latr. in sand-pits at Wilbraham Temple. 

 Saunders says the introduced ant, Plagiolepis Jktvidulo^ Rog., 

 has occurred in Cambridge ; and Thornhill has sent me Crabro 

 vagabundus, Panz. from Boxworth. Gorytes campestrtx, Linn, 

 was captured at the end of June in Bottisham Fen, and 

 Cerceris quinquefasciata, Rossi, near Stetchworth, with Crabro 

 vagus, Linn, at Ely, and C. interruptus, Deg. at Cambridge. 

 The rare wasp, Odynerus Ant Hope, Panz., and .1 ml rcna j>'r<ff<f, 

 Sm., have occurred to Perkins in Chippenham Fen, and the 

 same observer described a new bee, Prosopi* y>/////x//v'x, from 

 Wicken 1 , where I have captured Sphecodes riil>/<-ini<lnx, Hnu. : 

 and the very local bee, Mavropi* llnt<i, Fal>., is found there 

 also at flowers of Lysimachia vulgar is and nest in- in the 

 ground. I have confirmed Jenyns' record of Nomada ochr<>- 

 stoma, Kirb. by taking it at the Devil's Ditch; he says Ox////V/ 

 ///////V////-/X, Panz. occurs at Ely, witli Cln'luxtnimt Jl"ri#mnh\ 

 Linn. At Chippenham, Perkins lias found *s'/r//x j>l> 



* Monthly Minjnzine, 1900, p. 4U. 



