136 Annals Entomological Society of America [Vol. V, 
Pezomachus bruesii nom. nov. 
Pezomachus obesus Brues. 
The specific name ‘‘obesus’’ proposed by Brues (Bull.. Wis. 
Nat. Hist. Soc. Vol. VIII, No. 2, p. 68) for a Massachusetts 
species was preoccupied by Ashmead (Proc. Wash. Acad. Sct. 
Vol..IV, p. 193) for an Alaska species. 
A number of specimens of this species, taken at Twining, 
Maryland, were seen to vary from the typical form in that the 
whole body was of a ferruginous color with the exception of the 
apical half of the abdomen which was piceous black. 
46 ’ 
Pezomachus aciculatus nom. nov. 
Pezomachus foerstert Brues. 
The specific name ‘‘foersteri’’ proposed by Brues (Bull. Wis. 
Nat. Hist. Soc. Vol. VIII, No. 2, p. 67) for a Texan species was 
preoccupied by Bridgeman (Trans. Ent. Soc. London, p. 348) 
for a British species. 
Pezomachus ferruginosus nom. nov. 
Pezomachus insolens Brues. 
The specific name “‘insolens”’ proposed by Brues (Bull. Wis. 
Nat. Hist. Soc; Vol: ‘VIII, No. 2; p: 67) forsa) Washington 
species was preoccupied by Forster (Arch. f. Naturg. Vol. XVI, 
p. 130) for a Central European Species. 
Pezomachus cressonii nom. nov. 
Pezomachus gracilis Cress. 
The specific name ‘‘gracilis’’ proposed by Cresson (Can. 
Ent. Vol. 4, p. 63) for a Pennsylvania species was preoccupied 
by Forster (Arch. f. Naturg. Vol. XVI, p. 209) for a Central 
European Species. 
Pezomachus insularis nom.-nov. 
Theroscopus rufipes Ashm. 
The St. Paul Island, Alaska species described as Thero- 
scopus-rufipes by Ashmead (Wash. Acad. Sci. Vol. IV, p. 191 
1902) is wingless in both sexes and has not a true scutellum in 
the 9. It must therefore be transferred to Pezomachus where 
the specific name “rufipes’’ is preoccupied by Bridgeman 
(Trans. Ent. Soc. Lond., p. 157, 1883) for a British species. 
