436 HETEROMERA. 
This is an insular form of P. hirticollis, which inhabits the adjacent mainland, but 
differs from it in the much sparser and finer punctuation of the head and thorax, and 
in having the thorax in great part black ; it is also much smaller and less robust. The 
thorax has an elongate-triangular luteous patch on the disc in front, this marking in 
two specimens extending to the base, the rest being black or piceous. The legs are 
long and very slender. Three males and one female were obtained by Mr. Forrer. 
14. Pyrota nobilis. (Tab. XX. fig. 10, ¢.) 
Lytia nobilis, Haag, Berl. ent. Zeitschr. 1880, p. 48°. 
Pyrota nobilis, Dej. Cat. 3rd edit. p. 246 (fide Haag) *. 
Hab. Mexico !?, Canelas in Durango (Becker), Tonila in Colima (Hége), Oaxaca 
(Sallé). 
In this species the head and thorax are reddish-testaceous, the former with the base, 
sides, a short median streak, and two spots between the eyes, and the latter with the 
flanks and a cruciform mark on the disc black; the elytra brownish-luteous, without 
markings ; the underside, antenne, and legs (the base of the femora excepted) black. 
The thorax is smooth, almost impunctate. The apical joint of the maxillary palpi is 
narrow in both sexes, elongate-ovate, slightly sinuate on the outer side towards the 
tip, the latter truncate; without concave spongy-pubescent space beneath in the 
male. 
15. Pyrota quadrinervata. (Tab. XX. figg. 11, ¢; 114, maxillary palpus, ¢ ; 
11 4, profile of cedeagus; 11, sixth ventral segment, ¢.) 
Cantharis cuadrinervata, Herrera y Mendoza, Gaceta méd. de Méx. i. no. 17°; Dugés, La 
Naturaleza, i. p. 109’. | 
Pyrota quadrinervata, Dugés, An. Mus. Michoacano, ii. p. 92°. 
Pyrota ochracea, Sturm, Cat. p. 174: *. 
Pyrota quadripunctata (Klug), Dej. Cat. 3rd edit. p. 246 (fide coll. F. Bates) °. 
Hab. Mexico *® (Sallé, ex coll. Sturm; coll. F. Bates), Pachuca, Real del Monte, 
and Mineral del Chico, all in Hidalgo (Herrera and Mendoza‘ ?), Toluca (Dugés *), 
Tupataro in Guanajuato (Dugés *), Jalapa (Sallé, Hoge, Dugés*), Coatepec (Hége). 
In this species the head and thorax are reddish-testaceous, the latter with two black 
discal spots, the elytra luteous, and the antenne black (the basal joint sometimes 
testaceous) ; the colour of the underside and legs is variable. ‘The median third of the 
femora and tibie is usually reddish-testaceous, but this colour sometimes extends to 
the base. The head is sparsely punctate, the vertex sulcate, the eyes narrow; the 
antenne are short, setaceous, and very stout—joint 3 elongate, almost twice as long as 4, 
the outer joints ovate, diminishing in thickness ; the last joint of the maxillary palpi 
is narrow in both sexes, elongate-ovate, with the tip truncate; the thorax is glabrous, 
