Mar., 1909.] RoHWER: CrYTOCAMPUS IN BOREAL NORTH AMERICA. 15 



«'yl/<7/f.— Length 4.0; resembles female in general structural characters; 

 antenna longer, stouter at base, tapering sharply ; procidentia well developed, pro- 

 jecting, rounded at the apex ; hypopygium sharply rounded at tip. Color black ; flagel- 

 lum of antenna, labrum, tip of clypeus, base of mandibles, spot beneath eyes extend- 

 ing upwards on inner orbits, testaceous ; legs colored as in the female. 



"Twelve females and two males, Popof Island, July 9-15. 



"Type no. 5301 U. S. National Museum. 



" Swept from willow bushes. 



"Allied to Enura salicicola Smith, but in that species the ridges 

 about the ocellar area are obsolete, the frontal crest is broad and flat 

 and the sheath is broadly rounded at the apex. In both sexes of 

 Enura salicicola the antennas are more or less pallid, while in Enura 

 insularis this is true only of the males" (original description). 



I have not seen this species, but it should be easily recognized by 

 the above description. 



8. Cryptocampus salicis-nodus (Walsh). 



Enura saluis-nodus Walsh, Proc. Ent. Soc. Phil., vi, 1S66, p. 253. 



Etiura salicis-iiodus Nort., Trans. Am. Ent. Soc, i, 1867, p. 52; Trans. 

 Am. Ent. Soc, ii, 1869, p. 368 (Cat., p. 222). 



Cryptocampus salicis-nodus D. T., Cat. Hym., i, 1894, p. 278. 



Enura salicis-nodus Marl., Tech. Sr. 3, U. S. Dept. Agric., p. 20, 1896. 



? Enura salicis-nodus Ckll., Ann. and Mag. Nat. Hist., viii, April, p. 336. 

 [Records gall from Las Vegas, N. M. This is perhaps /ro//«;7/«« Roh.] 



Cryptocampus nodus Knw., Genera Insectorum, p. 51, 1905 [in a list of species]. 



Enura salicis-nodus Weldon, Can. Ent., xxxix, Sept., 1907, p. 296. [Gives a 

 description of macgillivrayi Roh. under this name. ] 



Enura s. nodus Jarvis, 3Sth Annual Rept. of Ent. Soc. of Ontario, 1907, p. 

 89. [Records the gall from Guelph, Ontario.] 



Female. — Length 5 mm. ; length of anterior wing 5 mm. Head seen from the 

 side not quickly narrowed toward the top, evenly rounded. Clypeus shallowly, circu- 

 larly emarginate ; lobes broad, obtuse. Antennal foveas wider below the antennae, 

 distinct, rather large. Middle fovese, large, shallow, obtusely pointed toward clypeus, 

 open above. Ocellar basin almost wanting, indicated only by five raised lines. Inter- 

 ocellar furrow broad, not very distinct ; lateral ocellar furrow almost wanting, not as 

 plain as the interocellar furrow. Frontal crest not very strong, notched in the middle. 

 Third and fourth antennal joints equal ; apical joint equal to or slightly longer than 

 the preceding one, tapering to apex. Ocellar region of the head rather strongly 

 rugose. Middle lobe of mesonotum finely punctured, the middle furrow quite distinct. 

 Mesopleurffi highly polished. Claws deeply cleft, teeth subequal. Venation normal. 

 Sheath broad, straight on the upper margin, obliquely, roundly truncate at the apex. 

 Cerci not extending beyond sheath. Black : head, except a large spot enclosing ocelli 

 (this spot sometimes extends from the antennae to the occiput) and behind, prono- 

 tum, tegulae, entire legs, ventral part and apical dorsal segments of abdomen, sheath 

 except apex, base of cerci (the abdomen is sometimes entirely rufo-ferruginous), 



