410 SEEEICOENIA. 



width at the base, arcuately narrowing from about the basal third, slightly flattened on the disc ; deeply 

 striate, the stria? without distinct punctures, the seventh, eighth, and ninth obsolete, the interstices feebly 

 convex, and closely, very finely punctate. Beneath closely and very finely, the prosternum sparsely, 

 punctate, the latter granulate in front ; the prosternum disconnected from the propleurae for the greater 

 part of its length. Second ventral segment with a rounded, slightly depressed, densely punctured, thickly 

 pubescent space in the centre in the male. 

 Length 1§-2|, breadth §-§ millim. ( d" ? .) 



Hab. Guatemala, Panajachel, Pantaleon, Guatemala city, San Geronimo (Champion). 



Numerous examples. Closely allied to the preceding, but smaller; the thorax less 

 coarsely granulate on the disc ; the elytra narrower and less convex, with the outer 

 stria? obliterated and the interstices flatter. The insect is widely distributed in 

 Guatemala, between elevations of from 1000 to 5000 feet; specimens were obtained 

 at Panajachel, on the shores of the lake of Atitlan, and on the sandy banks of streams 

 elsewhere. 



3. Hypnoidus guatemalensis. 



Oblong-oval, narrow, convex, opaque, the elytra slightly shining ; black, the elytra with a brassy lustre ; the 

 antennae piceous, with the second and third joints, and the lower side of the first, flavo-testaceous ; the 

 legs flavo-testaceous, the femora infuscate in the middle beneath ; above and beneath sparsely clothed 

 with a very short, fine, cinereous pubescence, the prothorax apparently with a denser patch of pubescence 

 near the hind angles. Head flattened, densely, very finely punctate, the eyes small ; antennas slender, 

 feebly serrate, moderately long. Prothorax about as long as broad, arcuately converging from the middle 

 forwards, the sides slightly sinuate before the base, the apex truncate in the middle, the anterior angles 

 acute ; the hind angles acute, slightly divergent, and not carinate ; the surface densely, very finely 

 punctate, finely granulate on the anterior part of the disc, with traces of a smooth median line behind. 

 Elytra about twice the length of the prothorax, and not wider than it at the base, gradually narrowing 

 from about the middle ; rather deeply striate, the striae without distinct punctures, the seventh and eighth 

 nearly obsolete, the interstices almost flat, and closely, minutely punctate. Beneath finely and densely 

 punctured ; the prosternum more sparsely punctate, finely granulate in front. 



Length 2|, breadth f millim. 



Hah. Guatemala, Pantaleon (Champion). 



One specimen. This insect closely resembles H. canescens, but it is narrower and 

 more parallel ; the thorax has the apex truncate in the middle, and the hind angles 

 are not carinate. 



4. Hypnoidus teapensis. (Tab. XVIII. fig. 15.) 



Oblong, feebly convex, slightly shining, finely pubescent ; testaceous or flavo-testaceous, the elytra with a 

 common diamond-shaped mark at one-third from the apex — extending narrowly along the suture to the 

 base and apex, and in one specimen outwardly to the lateral margin, — and sometimes a large, triangular 

 scutellar patch also, fuscous or piceous. Head closely, finely punctate ; antennae slender, feebly serrate. 

 Prothorax broader than long, moderately convex, rounded at the sides, the latter strongly sinuate before 

 the base ; the hind angles rather long, acute, divergent, and unicarinate, the carina short and almost 

 straight ; the surface closely, finely punctate, with a smooth median line. Elytra nearly three times 

 the length of the prothorax, and wider than it, narrowing from the middle; closely, finely punctate, 

 without trace of striae. Beneath densely and very finely, the prosternum more sparsely, punctate. 

 Prosternum with an oblong closely punctured spot in the middle in the male. 



Length 3-3|, breadth 1 millim. ( <$ $ .) 



