168 THE UNIVERSITY SCIENCE BULLETIN. 
‘AAA. Medium sized, robust species—concluded. 
CC. Vertex 2% times synthlipsis; width of pronotum 14 
times its length; width of scutellum 1% times its 
length; length of insect 13.1 mm. to 14 mm. 
N. montezuma. 
BBB. Vertex not twice as wide as synthlipsis. 
C. Vertex 1% times synthlipsis; width of pronotum 1% 
times its length; width of scutellum 11% times its 
length; length of insect 8 mm. to 13 mm. 
N. shooterii. 
CC. Vertex but slightly wider than synthlipsis; width of 
pronotum 2 times its length; width of scutellum 1% 
times its length; length of insect 12.6 mm. to 15.5 mm. 
N. insulata. 
The following descriptions have been copied from Bueno, 1905. He 
used Kirkaldy’s copy of descriptions, which appeared in his Revision of 
the Notonectide, pt. 1, Trans. Ent. Soc. London, 1897, and added measure- 
ments, etc. I therefore credit them “Bueno and Kirkaldy.” 
Notonecta indica Linne 1771. 
Linne, ‘“Mantissa Plantorum,” p. 534. 
“Head rather large, notocephalic lateral margins straight, not very 
divergent from the base; vertex varying from one and one half to twice 
as wide as synthlipsis. Scutellum rather shorter than in N. undulata 
Say. Hemelytra variable: (1) fulvous or dark stramineous, with a 
broad black fascia near the apex, occupying the basal two thirds of the 
membrane and the apex of the corium; (2) varying from bluish black 
to violet brown, the corial margins of the clavus and a broad irregular 
blotch about the middle of the corium, fulvous or dark stramineous. 
Otherwise like N. undulata Say. ( 
“Long., 9.4 to 11 mm.; lat., 3.4 to 3.6 mm.—Bueno and Kirkaldy. 
Distribution: Utah, Nevada, California, Arizona, Oregon and Texas. 
Bueno says that this bug is extremely abundant in Lake Texcoco, Mexico, 
where its ova, together with those of one or two Corixas, are used as 
food under the name “huantle.” 
Notonecta howardu Buneo 1905. 
Bueno, Journ. N. Y. Ent. Soc., vol. 13, p. 151. 
“Notocephalic lateral margins of head curved; vertex twice as wide 
as synthlipsis; base of eyes about twice as wide as synthlipsis. Pronotum 
four-fifths broader than long, humeral and lateral margins sinuate. 
Seutellum one-fifth longer than wide, not concolorous. Hemelytra 
clouded with black going into smoky, and with a broad black band across 
the membrane and the apex of the corium. Apex of the membrane 
smoky. Corium and clavus moderately clothed with a golden pubescence. 
Membrane lobes subequal. Pedes: Intermediate femoral spur small, 
rather blunt, concolorous. 
“Measurements: Vertex, 1 mm.; snythlipsis, 0.5 mm.; pronotum, lat., 
3.5 mm., long., 1.9 mm.; scutellum, lat., 2.7 to 2.9 mm., long., 2.2 to 2.4 
mm.; insect, long., 10.2 mm., lat. (pron.), 3.5 mm.; types, No. —, 
USS. Neve 
‘Described from two specimens in the U. S. National Museum, col- 
lected by Dr. E. A. Mearns in Arizona.”—Bueno and Kirkaldy. 
