168 PHYTOPHAGA.—SUPPLEMENT. 
outwards, the third ridge commencing near the shoulder and joined before the middle by a transverse 
costa to the second ridge, the fourth commencing at the shoulder and connected by @ transverse costa (in 
a line with the first transverse ridge) with the third ridge,—and several small tubercles near the apex, 
the interstices simply punctate; pygidium fulvous, spotted with black at the base, its surface finely 
rugose ; below fulvous, the breast dark fuscous ; the posterior femora more or less fuscous. 
Hab. Mexico, Jalapa (Hoge), Puebla (Salié). 
Much smaller than C. stictica or C. pectoralis, and differing from these in the colour 
of the elytra (which is, however, probably subject to variation) and of the underside. 
Two specimens. 
27 (a). Chlamys pectoralis. 
Obscure fulvous, the middle of the breast and of the abdomen black ; thorax with a regular rounded elevation ; 
elytra with excavated longitudinal spaces bounded by raised cost, and without isolated tubercles ; 
pygidium longitudinally carinate in the middle, spotted with black. 
Length 14 line. 
Nearly cylindrical in shape; head finely punctured and granulate, fulvous, with a small black spot on the 
vertex ; antenne entirely fulvous ; thorax twice as broad as long, fulvous, the middle portion raised into 
a regularly rounded elevation which is bounded posteriorly and laterally by a distinct sulcation, the sides 
covered with shallow non-confluent fovew, the elevation shallowly grooved in the middle, reticulate, and 
with a small black spot at the top; elytra slightly constricted at the middle, fulvous, opaque, with the 
excavated spaces and raised coste placed thus—a longitudinal sulcation near the suture, the sulcation 
limited by two strongly raised costs at the sides and by a transverse ridge at the middle, and followed 
below the latter by a smaller similarly enclosed sulcation (the first of these coste continued towards the 
apex, where it forms an elongate tubercle and then curves towards the sides where it is connected with 
other coste), an excavation at the middle near the sides, bounded laterally by a short longitudinal ridge 
(which forms the continuation of a longer one commencing at the shoulders) and inwardly by a strongly 
raised ridge (these connected by a short transverse elevation), and a strongly raised elongate tubercle 
near the apex (in a line with the subsutural one),—the interstices between the numerous ridges closely 
foveolate-punctate, the suture dentate throughout ; pygidium reticulate and punctured, carinate in the 
centre, its base spotted with black; underside closely reticulate-punctate, fulvous, the breast and middle 
portion of the abdominal segments, as well as the coxal cavities, black ; legs fulvous, with a more or less 
distinct black spot on the middle of the posterior femora. 
Hab. Mexico, La Parada, Juquila (Sallé). 
C. pectoralis closely resembles the specimens which I have referred to C. gysseleni ; 
but the thorax in the present insect is much more narrowed in front, and its elevation 
is bounded by a distinct sulcation at the sides and base; the elytra are more deeply 
excavated and have the coste more strongly raised ; the antenne are entirely fulvous; 
and the breast and the abdomen are partly black. C. stictica may be known from 
C. pectoralis by the less deeply excavated elytra and less strongly raised coste. 
Chlamys insidiosa (p. 85). (Tab. XL. fig. 8.) 
To the locality given, add:—Mexico, Ventanas in Durango (Hége); Guaremata, San 
Gerénimo (Champion). 
Two specimens from the above localities agree exactly with Lacordaire’s description. 
We figure the one from Ventanas. 
