55. CENSUS. 56. S-EMATT7S. 103 



a-c. cJ. 



Britain. 



J. F. Stephens. 



d. c?« 



Britain. 





e-l. 6 2- 



Germany. 



J. F. Ruthe. 



m. S . 



Nova Scotia. 



Lieut. Redman 



5. Craesus stephensii. 



Craesus stephensii, Neiom. Ent. Mag. iv. p. 261 (1837). 

 Hah. Ireland*. 



6. Craesus latitarsus. 



Craesus latitarsus, Norton, Proc. Ent. Soc. Phil. i. p. 199 (1862) ; 

 id. Trans. Amer. Ent. Soc. i. p. 84 (1867). 



Hah. United States. 



7. Crsesus laticulus. 



Craesus laticulus, Norton, Trans. Amer. Ent. Soc. ii. p. 368 (1869). 



Hah. United States. 



56. NEMATUS. 



Nematus, Panz. Ins. Germ. Heft xc. pi. x. (1805) j Jur. Hym. p. 59 

 " (1807). 

 Messa f , Leach, Zool. Misc. iii. p. 126 (1817). 



A. European Species. 



1. Nematus cinctus. 



Pristiphora cincta, Neivm. Ent. Mag. iv. p. 259 (Jan. 1837). 

 Nematus erichsonii, Hart. Blattw. p. 187 (1837) ; Zadd. Schrift. 

 Konigsb. xvi. p. 60 (1876). 



Hah. Central Europe. 



a. 2 . Britain. J. F. Stephens. 



b. c. $2- Germany. J. F. Ruthe. 



2. Nematus quercus. 



Nematus quercus, Hart. Blattw. p. 188 (1837) ; Thorns. Hym. Scand. 



i. p. 95 (1871) ; Zadd. Schrift. Konigsb. xvi. p. 61 (1876). 

 Tenthredo borealis, Zett. Ins. Lapp. p. 353, n. 53 (1838). 



Hob. Central Europe. 



a, b. 2 • Germany. J. F. Ruthe. 



c. 2 • Sweden. 



* Possibly an erroneous locality. It may be identical with one of Norton's 

 American species, in both of which the abdomen appears to be black. 



t This genus appears to have been founded upon some email species of 

 Nematus, which Leach mistook for Fenusa hortulana, Klug. 



