THE SAWFLY GENUS HOPLOCAMPA, 141 



characters. The color, in details, is not constant, although a normally 

 black or brownish species was never fountl to be uniformly pale, or 

 vice versa. The venation, as in many genera, is constant to the 

 typical form. The length of the upper and lower discal cells of the 

 hind wing apparently varies within a species (as in Hoplocampa 

 marlatti) . 



The descriptions were drawn up under a Carl Zeiss binocular with 

 a magnification of 35 diameters, although a Zeiss hand lens^ magnify- 

 ing 27 and 16 diameters, was used for the color description and 

 checking up. 



The generic description given in the Canadian Entomologist °' 

 should be corrected and elaborated as follows: 



Proepimerum (Eprrii) present. 

 Mesoprepectus (Ppctj) present. 



Pleural suture of metathorax (PSg) straight from the coxal process (CxPj) to the 

 wing process ( W P3), not curved as in Nematinae. 

 Metascutellum (Sclg) rather large. 

 Metapostnotum (P N^) as in Nematinae. 



Hoplocampa (Macgillivrayella) pallida n. sp. 



Runs in the table in the Canadian Entomologist^ to lacteipennis 

 Rohwer, but may be separated from that species by the large depres- 

 sions between the ocelli and orbits, higher, narrower occiput, paler 

 color, etc. 



Female. — Length 5.5 mm. Head distinctly higher than broad, broadest just 

 above the antenna?; labrum rather broadly rounded; clypeus with a deep, obtusely 

 V-shaped emargination, lobes obtusely triangular; supraclypeal area more convex 

 near the clypeus; eyes diverging toward the clypeus; lateral fovese close to the 

 antennae, small, punctiform; antennal furrows not continuous; crest rather well 

 developed; frontal area raised; oceliar basin and middle fovea wanting; postocellar 

 area not defined; vertex depressed on each side of ocelli, so that the occiput is much 

 narrowed; antennae slender, third and fourth joints subequal; shining, practically 

 impunctate, cerci tapering; sheath straight above, gently rounded below; stigma 

 broad, slightly broader basad of middle; transverse radius received in middle of cell, 

 nearly at right angles with the radius; upper discal cell of hind wings slightly exceed- 

 ing lower on the outer margin. Pallid; legs, antennae, front, and dorsulum pale 

 yellowish; wings strongly milky-hyaline; venation pallid-hyaline, except stigma, 

 which is yellowish. 



Type locality. — Michigan. One female from C. F. Baker collection. 

 Type.— Cat. No. 13469, U. S. National Museum. 



Hoplocampa (Hoplocampa) orbitalis n. sp. 



(Plate XXin, fig. 3; Plate XXIV, fig. 10.) 



Female. — Length 4 mm. Labrum broadly rounded apically; clypeus rather 

 deeply emarginate, lobes obtusely triangular; supraclypeal area convex, polished; 

 antennal furrows and postocellar area as in koebelei; middle fovea elongate; oceliar 



«Can. Ent., vol. 42, p. 242, July, 1910. &Can. Ent., vol. 42, p. 243, July, 1910. 



