MACROCEPHALUS. ; 57 
Var. The connexivum more rounded externally, the segments only very slightly projecting at their outer apical 
angles ; the scutellar callus extending to the middle (Handl. loc. cit. p. 23). (¢.) 
Hab. Costa Rica; Panama, Taboga I. (Champion). 
This is the commonest species of the genus in Central America. It is very like 
M. cimicoides, Swed., Westwood’s male specimen of which is contained in the Oxford 
Museum; but differs from it in having a less cylindrical apical joint to the antenne 
in the male, and the scutellar callus less pointed laterally. A typical male from Chacoj 
is figured. 
The antero-lateral tooth of the pronotum is usually much longer than the posterior 
one. ‘The scutellar callus varies in size, it being considerably prolonged posteriorly in 
many of the males before me. The puncturing of the basal half of the pronotum and 
of the base of the scutellum is very coarse. The segments of the connexivum are more 
or less angularly dilated at their outer apical angle. ‘The femora, tibia, and scutellar 
callus are probably green or greenish in life. Herr Handlirsch informs me that he has 
seen Stal’s types, and also that of WZ. notatus, Westw., and that he regards them as 
varieties of one and the same species, distinct from both M. manicatus (F.) and 
M. cimicoides, Swed., of North America. 
2. Macrocephalus aspersus, n. sp. (Tab. IV. fig. 11, ¢ .) 
Macrocephalus aspersus, Champ., Handl. Ann. k..k. naturhist. Hofmus. xii. p. 191, t. 9. fig. 29 
(autenna) *. 
3. Moderately elongate, narrow; ochraceous, the head with an olivaceous mark surrounding the ocelli behind, 
the posterior portion of the pronotum, the corium, and the scutellum, the median callus excepted, pale 
brownish-olivaceous ; the antenne, the buccal lamine, the front of the prosternum, and a streak on 
each side of the median callus of the scutellum in front, fuscous; the legs flavous, the tibie and tarsi 
green; above and beneath thickly studded with small smooth pallid granules, these giving a mottled 
appearance to the scutellum ; the posterior portion of the pronotum and the median callus and base of the 
scutellum coarsely and closely, the rest of the scutellum and the corium finely, punctate. Antenne 
moderately stout, joint 4 nearly as long as the others united, 3 longer than 2. Pronotum with the lateral 
angles obliquely truncate; the two dorsal carine prominent, converging anteriorly, and reaching the 
anterior lobe. Scutellum gradually narrowing from the middle forwards, with a large lanciform 
median callus extending to far beyond the middle, and also with a smooth median carina. Abdomen 
oval, the connexivum moderately wide, the fifth segment only subangularly projecting laterally at the 
outer apical angles. 
Length 8, breadth 3 millim. 
Hab. Nicaracua, Chontales (Janson 1). 
Differs from M. notatus (3) in the more slender antenne, with much longer apical 
joint, the obtuse, unraised lateral angles of the pronotum, the closely punctured scutellar 
callus, the rounded sides of the connexivum, and the more coarsely and closely granulate 
surface. The insect is more elongate and less attenuate than the male of M. panamensis, 
and has the scutellar callus very differently shaped, the granulation much closer, &c. 
This species is unknown to Herr Handlirsch, who informs me that it is certainly 
undescribed. 
BIOL. CENTR.-AMER., Rhynch., Vol. II., Aprid 1898. 8 
