MESOMPHALIA. 145 
_ middle, obliquely, abruptly converging in front; the entire surface (the suture excepted) thickly, rather 
coarsely, almost uniformly punctured. Beneath subglabrous, almost smooth. 
Length 73, breadth 64 millim. 
Hab. Nicaragua, Chontales (Janson). 
One specimen. Closely allied to WM. cwruleonotata and M. isthmica, but differently 
coloured and with the prothorax less deeply emarginate in front. The type is cou- | 
tained in the collection of Mr. O. E. Janson. 
15. Mesomphalia quadrivittata, (Tab. VI. fig. 16, 3.) 
Rotundate (¢), more ovate, and a little less obtuse behind (?), convex, slightly shining; the head and 
prothorax testaceous or rufo-testaceous, the latter with the basal edge very narrowly black ; the scutellum 
black ; the elytra flavous or flavo-testaceous, with two broad vitte on the disc, extending from the base 
_ nearly to the apex and becoming coalescent behind, and the suture and lateral margins rather broadly, 
black; the antenne black, with the four basal joints more or less testaceous; the femora and tibix 
testaceous, sometimes in great part piceous, the tarsi black; the under surface (the margins of the 
epipleurz excepted) testaceous, the breast and abdomen sometimes largely piceous. Head deeply grooved 
in the middle; antenne extending to a little beyond the base of the prothorax, the four basal joints 
shining and almost smooth, the others densely punctured and opaque. Prothorax twice as broad as long, 
broadly and rather deeply arcuate-emarginate in front, the sides rapidly, arcuately converging from the 
base, obliquely so in front, the base strongly sinuate on either side, the hind angles rather obtuse, the 
median lobe broad and obtuse, moderately produced; the disc somewhat convex, a little flattened in front, 
with a fine, interrupted median groove; the margins moderately concave; the entire surface sparsely, 
finely punctured, the punctures coarser at the sides. Scutellum moderately large, smooth. Elytra (3) 
one-half broader than, and about three and a half times as long as, the prothorax, conjointly rounded at 
the apex, slightly longer, and with the sutural angles a little sharper in the female, rounded at the sides 
in both sexes, the base strongly bisinuate, the humeri rounded, rather prominent in front; the disc 
regularly rounded ; the margins broadly expanded (¢), moderately expanded and somewhat deflexed 
(@), the exterior limb narrowly reflexed, strongly so at the base; the entire surface thickly, rather 
coarsely punctate. Beneath glabrous, almost smooth, the epipleure punctured as above. Claws obtusely 
appendiculate. 
Length, ¢ 9, 94-11, breadth 83-9 millim. 
Hab. Nicaragua, Rio San Juan (Janson); Costa Rica (Gadd). 
Three specimens, all contained in Mr. O. E. Janson’s collection. This species has 
much the facies of a Pecilaspis, resembling Mf. pecilaspoides, Baly, in shape, but it 
differs from that genus in its more deeply emarginate prothorax, the antenne with the 
four basal joints only smooth, &c.; the non-produced hind angles of the prothorax 
separate it from Chelymorpha. M. quadrivittata is not closely allied to any species 
known to me. ‘The Costa Rican specimen is figured. | 
16. Mesomphalia exclamationis. 
Cassida exclamationis, Linn. Syst. Nat. 12th edit. i. 2, p.577*; Fabr. Syst. Eleuth. i. p. 406’ ; 
Herbst, Kafer, viii. p. 258, t. 181. fig. 8°; Oliv. Ent. vi. no. 97, p. 947, t. 1. fig. 16°. 
Mesomphalia exclamationis, Boh. Monogr. Cassid. i. p. 379°, and iv. p. 176°; Cat. Col. Ins. Brit. 
Mus. ix. p. 647. 
Hab. Mexico, San Blas (Forrer), Acapulco (Hége), San Andres Tuxtla, El Camaron 
