Ko. 1930. 



DESCRIPTIONS OF NEW SAWFLIES—ROHWER. 



215 



LAGIUM ANGULABRE, new species. 



■- Very like erytJirogastrum structurally and it may prove to be the 

 male of that species. 



Male. — Length 10.5 mm. In the characters of head and thorax 

 this agrees with erythrogastrum. Third antemial joint much longer 

 than the fourth; hypopygidium subtruncate. Entirely black except 

 the pale brown intermediate knees and anterior legs below tro- 

 chanters. 



Baldwin, Kansas. One male collected May, 1897, by Bridwell. 



Type.— Cat. No. 14252, U.S.N.M. 



a b 



Fig. 2.— Genitial parts of Lagium male, a-e. Lateral aspect of cochlea- 

 rium; o, angulabre; 6, plantfrons; c, atroviolaceum; d, tardum; e, 

 preatrum;/, ventral view of the pr.^putium of preatrum. 



LAGIUM PERATRUM (Dyar). 



Tenthredo atroviolacea var. peratra Dyar, Journ. New York Ent. Soc, vol. 5, 1897, 

 p. 192, male. 



Type.— Cat. No. 4137, U.S.N.M. 



This species is also found in Pennsylvania and Michigan. The 

 type locahty is Franconia, New Hampshire. 



