122 PHYTOPHAGA.—SUPPLEMENT. 
60. Cryptocephalus constricticollis. 
Entirely pale fulvous or flavous; thorax impunctate, deeply obliquely grooved at the sides; elytra strongly 
punctate anteriorly, the interstices at the sides and the one within the shoulders strongly costate. 
Length 1-12 line. 
Head impunctate, flat, pale flavous, the eyes closely approached, the labrum brownish; antenne flavous, two- 
thirds the length of the body in the male, the basal two joints strongly swollen, the following four joints 
slender and elongate, the terminal ones slightly widened ; thorax twice as broad as long, of nearly equal 
width, the sides straight at the base, rounded in front, and strongly deflexed, the surface impunctate, 
with a very deep oblique groove on each side near the base, the groove not reaching the lateral margin 
but extending shallowly across the base; scutellum narrowly elongate, strongly pointed ; elytra slightly 
wider at the base than the thorax, nearly parallel, transversely depressed below the base, deeply punctured » 
anteriorly, more feebly so posteriorly, the fourth row of punctures divided into two branches below the 
shoulder and followed by a short, oblique, strongly raised costa, the lateral interstices also strongly 
costate ; underside and legs flavous; prosternum nearly quadrate, its posterior margin straight. 
Hab. Panama, Bugaba, Volcan de Chiriqui, David (Champion). 
This small Cryptocephalus is of peculiar shape, and in the form of the thorax it 
resembles some species of the genus Scolochrus; it differs, however, from Scolochrus 
and the allied genera in the form of the prosternum. C. constricticollis resembles 
C. esuriens, Suffr., from Parad, in the uniform flavous colour; but it has the thorax 
transversely subquadrate, with the lateral groove deeply impressed (more deeply so 
than in any species of the genus known to me) and extending shallowly across the entire 
base, giving the anterior portion a swollen appearance. The sculpture of the elytra is 
again peculiar, there being a short oblique costa within the shoulder ; the seventh row of 
punctures is entirely absent, and the interstices which follow are strongly costate; all 
the rows of punctures are abbreviated at some distance from the apex, the latter in 
consequence being entirely smooth and impunctate. 
Many specimens. 
STEGNOCEPHALA. (To precede the genus Scolochrus, p. 58.) 
Stegnocephala, Baly, Trans. Ent. Soc. Lond. 1877, p. 32. 
This genus is stated by its author to differ from M/onachus in the different structure 
of the prosternum, large size, larger eyes, longer antenne, &c.; and from Crypto- 
cephalus in its broader form, widely separated hind coxe, and more strongly produced 
lateral lobe of the elytra. The species hitherto included in Stegnocephala are from 
Tropical South America; one of these extends northwards to the State of Panama, 
whence two additional species are now added. 
1. Stegnocephala perplexa. 
Cryptocephalus perplecus, Sufir. Monogr. in Linn. Entom. xv. p. 194°. 
Hab. Panama, Bugaba, David (Champion).—Gutana, Surinam!; Amazons! (coll. 
Baly, Jacoby). 
The differences, if any, between the Panama specimens and one from the Amazons 
