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Notes on TENTHREDINID3;, with descriptions of new species, 



In the Collection of the Entomological Societiy. 



BY EDWARD NORTON. 



Genus TEICHIOSOMA. 



1. Trichiosoma triangulum. Kirby. 



In place of the triangular black spot which ordinarily covers most 

 of the tergum, a specimen from Colorado has most of the tergum yel- 

 lowish rufous, with irregular black spots on the two basal segments 

 above and beneath. Otherwise it agrees with specimens from Hud- 

 son's Bay Territory and California. 



Rocky Mountains, Col. Ter. (Coll. Ent. Soc. Philad.) One male. 



Genus HYLOTOMA. 



2. Hylotoma McLeayi. Leaeli. 



Leach describes the wings as •• subfuscous, at the apex subhyaline." 

 but the most common species in this country, which has come to be 

 considered the typical species, has the wings smoky, at the apex clear, 

 with a round fuscous spot beneath the stigma, which touches the first 

 submarginal and does not extend beyond the black dot in the niiddle 

 of the second. This is found from Maine to Illinois. 



3. Hylotoma ceruleus. u. sp. 



Blue-black, with violaeeou.- wings aufl a fuscous s))ot below tlie stigma. (Long 

 0..32. Br. wings 0.70 in.) 



9 . Color violaceous, shining : antennse short, stout, black ; palpi white: legs 

 tlie color of body, their knees and anterior tibife dark pieeous ; wings smoky 

 violaceous, clearer toward tlie tips; the whole of marginal cell fuscous; a round 

 darker spot below the stigma, covering most of the first and second submargina 1 

 cells: nervures black: lower middle cell of underwings not more than li.-ilf as 

 long or large as the upper. 



Pennsylvania. (Coll. P]nt. Soc. Philad.) One female. 



1. Hylotoma clavicornis, Fab. 



This has the wings hyaline, their basal half a little smoky; the fus- 

 cous spot below the stigma semi-cylindrical, with the flattened side 

 toward the tip of the wings. 



Massachusetts. (Coll. Ent. Soc. Philad. j 



r>. Hylotoma abdominalis, Leach. 



This is larger than //. chiricorhlx. but is very much like it ; the ab- 

 domen is of one color, with the apex beneath sometimes blue-black ; 



