AULACIZES. 217 
5. Aulacizes albidipennis, sp. n. (Tab. XIII. fig. 16.) 
Preecedentibus affinis, robusta, testacea; capite lato obtuse producto, hoc et pronoto albido colore obscuriori 
figuratis, rugosis ; scutello testaceo, nigro-notato; tegminibus albidis, margine exteriori et apice testaceis, 
maculis quibusdam tenuibus fuscis ; corpore rufo-testaceo ; femoribus testaceis, ad apicem fusco-annulatis ; 
tibiis tarsisque nigris, his ad partem et genibus testaceis, 
A rather broad and robust species, with the head shortly and bluntly produced ; head and pronotum whitish, 
variegated with fuscous and testaceous ; scutellum testaceous, with two minute dark rings in front and 
the apex fuscous; tegmina whitish, with the external border and apex testaceous, and with dots and 
dashes of a dark colour, which also narrowly border the internal margin; abdomen with a fuscous spot 
towards the apex; legs testaceous, the tibie and part of the tarsi and a ring before the knees fuscous. 
Long. 12 millim.; lat. ad hum, 4 millim. 
Hab. Mexico, Tierra Colorada in Guerrero 2000 feet (H. H. Smith). 
6. Aulacizes isabellina, sp. n. 
Elongata, sat angusta, isabellina ; capite parvo, vertice brevi, ante oculos late quadratim rotundato, cum pro- 
noto et scutello fusco perobscure rufo ; pronoto antice distincte angustato, fere levi, basi ad medium haud 
sinuata; scutello magno ; tegminibus fusco-griseis, subhyalinis, utrinque pone scutellum fascia longitudinali 
perobscure rufa instructis, sat nitidis, levibus, postice sensim angustatis; corpore subtus obscure rufo ; 
pedibus fuscis. 
An obscure-looking species, of a dark dun colour, with the front parts, the underside, and a longitudinal fascia 
towards the base of the tegmina obscurely crimson; head small, with short squarely rounded vertex ; 
pronotum plainly narrowed in front, not sinuate at the base, almost smooth; scutellum large, depressed 
in the middle ; tegmina rather shiny, almost smooth ; legs fuscous. 
Long. 134 millim.; lat. ad hum. 4 millim. 
Hab. Guatemata, Cerro Zunil 4000 feet (Champion). 
A. isabellina appears to form a connecting-link between the preceding species (with 
short, broad, obtuse heads) and the following, in which the head is more strongly 
produced. 
7. Aulacizes affinis. 
Aulacizes maculata, Walk. List of Homopt. Ins. i. p. 793 (1851) *. 
Aulacizes terminalis, Walk. loc. cit.’. 
Tettigonia affinis, Sign. Aun. Soc. Ent. Fr. 1855, p. 227°, 
Hab. Mexico (Sichel, in Mus. Vind. Ces.).—Brazit 2, Bahia 3. 
The above is Signoret’s synonymy, and I am somewhat doubtful of it; if he is right, 
Walker’s name A. maculata ought to stand. Signoret, however, appears to have 
named his insect afresh, as Walker had a nearly allied species, Ciccus maculatus, and 
also a Diestostemma terminalis, and as the firstementioned author included all under 
Tettigonia, it was impossible for him to let the synonyms stand; as it is, much confusion 
is avoided by adopting Signoret’s name. 
BIOL. CENTR.-AMER., Rhynch. Homopt., Vol. IL., February 1899. #28 
