PICTINUS. 81 
a", Antenne with the fourth joint shorter than the third. . . . armatus, n. sp. 
6, Antenne with the fourth joint longer than the third . . . . spiniger, n. sp. 
6", Anterior angles of the pronotum rounded and moderately pro- 
minent; head with a short post-ocular spine . . . . . breviceps, nu. sp. 
b'. Posterior portion of the pronotum with a short marginal tooth ; the 
anterior angles laterally projecting; spiracles very prominent; head 
rounded behind the eyes. . . . ... os . oe denticollis, n. sp. 
b. Head subquadrate, the post-ocular portions rather broad and armed with 
a short tooth; anterior angles of the pronotum rounded and explanate. quadraticeps, n. sp. 
c. Head transversely suborbicular, small, the post-ocular portions rounded ; 
anterior angles of the pronotum rounded . . . . « « « + « + parviceps, 0. sp. 
1. Pictinus armatus, n. sp. (Tab. VI. figg. 1, 2; la, antenna.) 
2. Oblong-ovate, piceo-ferruginous ; the anterior angles of the prouotum, the apical margins of the connexival 
segments, and also the anterior margins externally, the first tarsal joint, and the basal half of the tibie, 
flavous ; the inner portion of the connexivum, and the first three antennal joints at the base and the 
fourth at the apex, ferruginous ; the membrane smoky-black, with a luteous spot behind the apex of the 
corium. Head broad and strongly transverse, granulate; the spiniform antenniferous processes acute, 
parallel ; the apical process parallel, moderately long, extending to the middle of the first antennal joint, 
bilobed at the tip; the post-ocular portions short, and armed with a long, acute spine, which extends 
outwards to some distance beyond the eyes; antenna moderately long, joints 1 and 3 subequal in length, 
2 slightly shorter than 3, 4 nearly as long as 2, piriform, pilose at the tip, 2 and 3 slender. Pronotum 
transverse, broad, granulate, subtruncate behind, sinuate at the sides before the middle and narrowed in 
front, with rather narrow, laterally projecting, raised, very prominent, lobiform anterior angles ; the 
posterior portion parallel behind, rounded at the sides anteriorly. Scutellum carinate. Corium extending 
to a little beyond the first segment, the nervures granulate. Abdomen rounded at the sides, the sixth 
segment abruptly and obliquely narrowed posteriorly and feebly emarginate behind; the genital lobes 
short; the spiracles on the fifth and sixth segments visible from above. 
Length 43, breadth 21, millim. 
Hab. Panama, Bugaba (Champion). 
One example. Very like P. cinctipes, Stal, from Bogota, the type (¢) of which is 
before me; but with the antenne more slender and with a shorter apical joint, the 
apical process of the head bilobed in front, the post-ocular spines longer and more 
acute, the anterior angles of the pronotum longer, more narrowly lobate, and outwardly 
directed, the pronotum itself parallel behind, the broad flavous annulus on the tibie 
extending to the base, &c. | 
2. Pictinus spiniger, n. sp. (Tab. VI. figg. 2,2 ; 2a, antenna.) 
¢. Oblong-ovate, piceo-ferruginous ; the anterior angles of the pronotum, the apical margins of the connexival 
segments, and also the anterior margins externally, ochraceous; the inner -portion of the connexivum, 
and the antenne, the tips of the second and third joints and the base of the fourth excepted, ferruginous ; 
the membrane smoky-black, with an obscure luteous spot behind the apex of the corium, extending along 
its apical margin; the legs fuscous, the knees and tarsi paler. Head broad and strongly transverse, 
granulate; the spiniform antenniferous processes acute, parallel; the apical process moderately long, 
extending to the middle of the first antennal joint, narrowed behind, and unemarginate at the tip; the 
post-ocular portions short, armed with a long, acute spine, which extends outwards to some distance 
BIOL. CENTR.-AMER., Rhynch., Vol. II., April 1898. II 
