GERSTAECKERIA. AT1 
3. Gerstaeckeria leseleuci, sp. n. 
Acalles leseleuci, Jekel, in litt. 
Oblong-ovate, moderately shining, black, the antenne and the tips of the tarsi ferruginous ; variegated above 
with a sparse clothing of coarse, ochreous, whitish, and blackish scales, the light-coloured scales condensed 
into a short oblique streak below the humeri and a common cruciform post-median patch on the elytra, 
the intermixed, suberect, setiform scales clustered into dense compact lines on the interstices, the under 
surface and legs sparsely squamose. Head and base of the rostrum closely, and the rest of the latter 
sparsely, punctate, the eyes large and not very widely separated; antenne inserted a little behind the 
middle of the rostrum, joints 1 and 2 of the funiculus subequal in length, the club ovate. Prothorax 
transverse, convex, rounded at the sides, narrowed and feebly constricted in front, truncate at the base ; 
coarsely, densely punctate, and with a short median carina. Elytra ovate, at the base not wider than 
the prothorax; very coarsely seriate-punctate, the interstices narrow, somewhat convex, sparsely 
punctate. Ventral segments coarsely, closely punctate. Legs short and stout, the femora unarmed, the 
tibiee sinuous within, the posterior pair mucronate at the inner apical angle ; tarsal claws minute. 
Length 5, breadth 22-23 millim. 
Hab. Mexico, Vera Cruz (Mus. Brit.), Juquila in Oaxaca (Sal/é). 
Two specimens. Very like G. cruciata, but with the eyes more approximate, the 
prothorax carinate, the seriate punctures on the elytra large and foveiform (the 
interstices in consequence narrower), and the tarsal claws smaller. Acalles carinatus, 
Lec., is probably a nearly allied form. 
4. Gerstaeckeria lacti, sp. n. (Tab. XXIII. fig. 7.) 
Acailes lacti *, Pilate, in litt. 
Oblong-ovate, slightly shining, black, the antenne ferruginous ; clothed with scattered ochreous scales, the 
head with a dense, rounded, whitish patch on the vertex, the elytra with an interrupted oblique streak 
of coarse white scales at the sides below the base and a common, transverse, subcruciform, white fascia 
towards the apex, the latter with ochreous scales intermixed; the squamosity of the legs and under 
surface coarse and mostly whitish, the tibie annulate with brown. Head closely punctate, slightiy 
sulcate between the large eyes ; rostrum sparsely punctate, the punctures very coarse at the base, sulcate 
in front of the eyes, the antennz inserted a little behind the middle, joints 1 and 2 of the funiculus equal 
in length. Prothorax transverse, convex, rounded at the sides, narrowed and feebly constricted in front ; 
very coarsely, confluently punctate, and also carinate anteriorly. Elytra oblong-ovate, not wider at the 
pase than the prothorax; coarsely seriato-foveolate, the interstices narrow, rugosely punctate, and 
here and there confluent. Ventral segments coarsely, closely punctate. Legs very stout, the femora 
unarmed. 
Length 8, breadth 32 millim. 
Hab. Mexico, Campeche in Yucatan (Pilate, in Mus. Brit.). 
One worn specimen. Larger and more elongate than G. leseleuct (of which it may 
be an extreme form), with the sculpture of the prothorax and elytra exceedingly 
coarse, the interstices of the latter being here and there confluent, the head with a 
whitish patch on the vertex. The elytral markings are similar to those of G. leseleuct 
and G. cruciata. 
* Perhaps incorrectly written ‘ lacti,” in mistake for “ cacti,” one of the allied forms having been found in 
Cactus. 
