298 HETEROMERA. 
Four specimens only of this curious species were obtained, all from the low hot 
Pacific coast-region. ‘The form of the penultimate joint of the four anterior tarsi, 
together with the very slender antenne, almost uniform pubescence, &c., distinguish it at 
once from all the other Mordell@ here described. Viewed from above the penultimate 
joint appears to be strongly bilobed, the lobes extending to two-thirds the length of the 
apical joint and connected beneath by a membranous piece which is slightly emarginate 
at the apex. In addition to the usual pubescence, each of the ventral segments has a 
fringe of much coarser hairs on its hind margin, these hairs arising from a line of 
coarse punctures. 
48. Mordella seriata, (Tab. XIII. figg. 9; 9 a, antenna.) 
Moderately elongate, rather broad, pitchy-brown; the head with a broad band of dark brown pubescence 
along the middle, the sides with yellowish-cinereous pubescence; the prothorax with small yellowish- 
cinereous-pubescent spots scattered over the greater part of the surface, these becoming partly coalescent 
on the anterior portion, a large oblong patch on the middle of the disc behind and a small one at the 
apex free from spots, the rest of the surface with dark brown pubescence; the elytra with the following 
yellowish-cinereous markings—a small spot at the base close to the shoulders, a larger spot near the 
suture a little below the base, one opposite to it on the lateral margin, one lower down on the outer 
portion of the disc midway between these, a narrow angulated fascia at one-third from the apex (not 
reaching the suture or lateral margin), and numerous serially-arranged small punctiform spots (a row on 
either side of the suture the most distinct), these latter extending from the base to the apex,—the rest of 
the pubescence dark brown; the pygidium yellowish-white-pubescent, with a dark brown stripe along the 
middle. Head with a very distinct median groove ; palpi piceous, the last joint of the maxillary pair oblong 
ovate, narrow; antenne rather long, joints 3-5 very slender, 4 and 5 subequal, each a little shorter than 3, 
6-11 broadly widened and forming a long club, 6-10 strongly serrate, 6 triangular, about as broad as long, 
7 a little shorter, 8-10 very strongly transverse, 9 and 10 about twice as broad as long, 11 broad ovate, a 
little narrower than, and nearly twice as long as, 10, 1-5 pitchy-brown, 6 and 7 yellow, 8-11 black ; elytra 
moderately long ; beneath pitchy-brown, the pubescence in great part yellowish-cinereous ; pygidium very 
short and stout, blunt at the tip, barely twice the length of the hypopygium ; legs slender (the hind pair 
excepted), pitchy-black, the two anterior pairs paler, the tibial spurs testaceous, the penultimate joint of 
the anterior and intermediate tarsi filiform, the intermediate tibie and tarsi about equal in length. 
Length to end of the elytra 4, to tip of the pygidium 43, millim.; breadth 13 millim. 
Hab. Panama, Bugaba (Champion). 
One specimen only. In the markings of the upper surface extremely like W/. sticti- 
coptera (the Chacoj example of which agrees almost exactly with it); but differing 
totally from that species in the form of the fifth antennal joint—very slender and 
scarcely wider than the fourth in J. seriata, broadly triangularly widened and fully 
three times as wide as the fourth in W. sticticoptera. At first sight WZ. seriata would 
appear to be only the other sex of M. sticticoptera; the difference, however, in the 
form of the antenne is too great to be sexual. 
This is one of a little group of species characterized by the oblong ovate apical joint 
of the maxillary palpi, the very short blunt pygidium, the simple penultimate joint of 
the four anterior tarsi, and the more or less dilated antenne, the latter with the apical 
or intermediate joints yellow. . 
