432 HETEROMERA. 
extending forwards ; and two ( ¢) have this spot extending forwards so as to nearly or 
quite join the humeral spot (as figured by Lacordaire®). The femora and tibiew are 
usually yellow, with the tips black, but in one example they are entirely black; the 
antenne and underside also vary in colour to entirely black; the apices of the elytra 
are always broadly yellow. In the male the basal joint of the antenne is much 
elongated, almost entirely yellow, and the apical joint of the maxillary palpi is very 
large, obliquely pyriform, and considerably extended on the external as well as on the 
inner side. P. maculata (Lacord.) is incorrectly identified by Burmeister (Stett. ent. 
Zeit. 1881, p. 22) with P. vittigera, Blanch. ; and by Berg (An. Soc. Arg. xv. pp. 67, 
68) with P. divirgata (Vill. y Pefiaf.). The female only of this species appears to have 
been known to Lacordaire and Haag. 
6. Pyrota tenuicostatis. (Tab. XX. fige. 6, ¢; 6a, labium, 68, maxillary 
palpus, 3.) 
Lytta vittigera, Lec. Journ. Acad. Phil. (2) iv. p. 22 (1858) (nec Blanch.)’. 
Cantharis tenuicostatis, Dugés, a Naturaleza, iv. p. 60, t. 2. figg. 6, 6 a-k (1877) ®. 
Pyrota tenuicostatis, Dugés, An. Mus. Michoacano, ii. p. 91°. 
Pyrota dubitabilis, Horn, Trans. Am. Ent. Soe. xii. p. 113, t. 5. fig. 16 (1885) *. 
Hab. NortH America, near the southern boundary of Texas! 4_-Muxtco, Almolonga 
(Dugés*), Plan del Rio (Hége), State of Vera Cruz (Sallé?, Dugés *), San Andres Tuxtla 
(Sallé), Teapa in Tabasco (7. H. Smith). 
Found in abundance by Herr Hoge at Plan del Rio. In this species the elytra have 
a very broad black discoidal stripe, extending almost from the base to very near the 
apex, often narrowed anteriorly and with a black spot between it and the suture; the 
thorax with a large oblique patch on either side of the middle behind, and an oblong 
patch on either side in front also black ; the antenne, the underside in great part, and 
the legs (the coxee and the base of the femora excepted) black. The head is sulcate 
between the eyes; the thorax has some coarse scattered punctures near the base; the 
elytra (except at the base) are dull, densely, finely punctate, vaguely sulcate, with four 
faint carine on the disc, and the sutural and lateral margins raised. In the male the 
last joint of the maxillary palpi is exceedingly large, broadly transverse, and somewhat 
scaphiform, the three basal joints of the anterior tarsi are very strongly, subangularly 
produced on their inner side at the apex, and the sixth ventral segment is entire. 
There can be little doubt that Lytta vittigera, Lec. (females only of which are known, 
and whether they were obtained in Texas or Mexico is uncertain), is a variety of 
P, tenuicostatis, Dugés, with the black vitta on the elytra narrowed anteriorly and 
having a spot between it and the suture at the base; Dr. Horn’s description? applies 
well to this form, which occurs also at Plan del Rio and Tuxtla. 
