252 Canadian Record of Science. 



was drawn to a small Elaphrus I had not seen before, and 

 which I thought at first might possibly be new. On investi- 

 gation, however, I find it has been described by Dr. Horn 1 

 and I cannot do better than extract here his excellent de- 

 scription of the typical form : — 



"Form rather slender, surface dark bronze as in ruscarius. 

 Head densely punctured, eyes large and prominent. Thorax 

 narrower than the head, slightly longer than wide, base 

 narrower than apex, sides moderately arcuate, posteriorly 

 sinuate, hind angles rectangular ; disc convex, with apical 

 impression moderately deep, median impression moderate 

 and with a short smooth line more deeply impressed at its 

 middle, within the hind angles a broad inrpression ; surface 

 densely punctured, and with a vague impression on each 

 side of middle ; beneath sparsely, but not deeply, punctured. 

 Elytra oboval truncate at base, widest behind the middle, 

 sides slightly sinuate behind the humeri, disc densely and 

 finely punctured with usual three discal and a marginal 

 series of ocellate fovea? and with polished, more elevated 

 spaces between the fovea? of each series, those of the sutural 

 row larger and the outer two quite small. Body beneath 

 bronzed, shining, sparsely punctured at the sides. Legs 

 testaceous, with a?neous surface lustre, tips of tibia? and 

 femora darker. Length, -24 inch; t> mm. Male. — Anterior 

 tarsi, with three joints dilated. 



This species takes its place with riparius and ruscarius, 

 from which it differs in its generally longer form, narrower 

 and less accurate thorax and its entirely pale legs. The 

 sculpture of the underside of the thorax is somewhat more 

 dense and less deeply impressed, and the interval less 

 shining than in ruscarius, and more sparse than in riparius, 

 and with intervals distinct, occurs in Oregon and British 

 Columbia." 



While of the two individuals before me one is quite of the 

 normal color, the other differs from the typical form by 

 being suffused with beautiful purplish bronze, and by having 



1 Trans. Am. Ent. Soc, vol. VII (1878), p. 51. 



