218 HETEROMERA. 
* Base of the thorax margined. 
a. Elytra coarsely punctate-striate. 
1. Phaleria guatemalensis. (Tab. X. fig. 1.) 
Ovate, convex, reddish-testaceous, shining. Head transversely impressed in front, sparingly and somewhat 
coarsely punctured ; prothorax transverse, the sides slightly rounded and converging from the base, the 
apex deeply emarginate, the anterior angles prominent, the base very distinctly margined and with a 
deeply impressed oblique fovea on each side, the surface smooth and impunctate, the base often 
narrowly piceous; elytra scarcely wider than the prothorax at the base, the humeri not prominent, 
coarsely punctate-striate, the scutellar stria deeply impressed, the interstices feebly convex and almost 
impunctate, the disc with a large common broad black or piceous patch about the middle extending more 
or less broadly to the base; legs and antenne testaceous. 
Length 43-63 millim. (¢ 9.) 
Hab. Guatemata, Champerico (Champion). 
Many examples. This species will be readily known by the ovate form, the base of 
the thorax very distinctly margined, and the very coarsely punctate-striate elytra; the 
specimens vary but little in the maculation of the elytra, in one only the common black 
patch does not extend to the base. 
b. Elytra finely striate. 
2. Phaleria panamensis. 
Elliptic, moderately convex, testaceous, rarely piceous, rather shining. Head finely and somewhat closely 
punctured; prothorax transverse, the sides slightly rounded and converging from the base, the base 
narrowly and finely margined and with an oblique fovea on each side, the surface very finely, shallowly, 
and sparingly punctured, the base often narrowly (rarely broadly) piceous; elytra slightly wider than the 
prothorax at the base, finely striate, the strie punctured towards the base, more deeply impressed behind, 
the interstices (if viewed with a strong lens exhibiting a very closely wrinkled surface) finely and some- 
what closely punctured, colour very variable—from testaceous with a triangular discoidal patch on each 
elytron behind the middle and the suture between piceous or black, to black with the margins and shoulders 
alone testaceous (as in P. dytiscoides); legs and antennz more or less testaceous; beneath reddish- 
brown, shining, finely and rather closely punctured. 
Length 5-5? millim. (¢ 2.) 
Hab. Panama, near the city, San Miguel in the Pearl Islands ( Champion). 
A very variable insect, as regards the coloration of the thorax and elytra; the base 
of the thorax often more or less piceous, the elytra exhibiting every intermediate grade 
between testaceous with a dark discoidal spot on each, to black with the margins only 
testaceous. ‘The variety coloured as in P. dytiscoides may be known from that species 
by the comparatively shorter and broader form; the thorax with the base only piceous, 
the anterior half of the disc always more or less testaceous. 
I found this species in the greatest profusion on the beach at Panama ; but met 
with only one example in the Pearl Islands. 
3. Phaleria dytiscoides. (Tab. X. fig. 2.) 
Elongate oval, moderately convex, reddish-brown or black, rather shining. Head sparingly and finely punc- 
tured; prothorax transverse, the sides feebly rounded and converging from the base, the apex emarginate, 
