112 RHYNCHOPHORA. 
depressed submarginal line of white pubescence by the obtuse, separately rounded 
apices of the elytra. This line of pubescence is confined to the seventh elytral 
interstice, and is continued forwards along the flanks of the prothorax, being here 
scarcely visible from above. 
92. Lixus maculipennis, sp. n. (Tab. VII. figg. 14, 14a, ¢.) 
Very elongate, black, slightly shining ; clothed above with a short, fine, greyish pubescence, the elytra with a 
fascicle of longer white pubescence placed in each of the shallow, scattered, foveiform depressions of the 
surface, the under surface and legs cinereo-pubescent. Head densely, finely punctate, shallowly foveate 
between the eyes; rostrum stout, feebly curved, nearly or quite as long as the prothorax, scarcely longer 
in the 2 than in the ¢, closely, finely punctate. Prothorax longer than broad, subconical, feebly bisinuate 
at the base and not fitting very closely to the elytra; densely, rugulosely punctate, transversely wrinkled 
at the base, the basal depression deep and transverse and usually extending forwards along the middle of 
the disc ; anterior margin with a short obtuse tooth opposite the lower angle of the eyes. Elytra very 
elongate, broader at the base than the prothorax and gradually widening to the middle ; the basal margin 
thickened and raised, the apices obtuse or subacuminate ; finely seriate-punctate, the interstices flat and 
rugulosely punctured, and with a few irregularly scattered, shallow, foveiform depressions, which become 
more numerous towards the sides or apex. Ventral segments 1 and 2 with a deep groove down the 
middle in the ¢. Body apterous. 
Length 14-20, breadth 34-54. (d Q.) 
Hab. Guatemata, Totonicapam, Cerro Zunil, and Volcan de Agua 5000 to 10,000 
feet, Pacific slope (Champion). : 
Seven specimens. Very like L. teniatus, and perhaps an extreme form of it, but 
without the depressed submarginal line of white pubescence on the elytra, which is 
here replaced by scattered, irregularly arranged, piligerous depressions. In one example 
from Cerro Zunil the apices of the elytra are subacuminately produced, and the 
rostrum exceedingly stout. 
23. Lixus apterus, sp.n. (Tab. VII. figg. 15, 15a, ?.) 
Elongate-obovate, black, shining, sparsely and very finely cinereo-pubescent, the pubescence closer on the 
depressed sulci of the elytra. Head foveate between the eyes, closely, finely punctate, with coarser 
punctures intermixed ; rostrum ( ¢ ) moderately curved, very stout, nearly as long as the prothorax, finely 
punctate, with a few coarser punctures intermixed, the punctuation becoming sparser and more minute 
towards the apex, (Q) a little longer, and smoother at the tip. Prothorax convex, conical, longer than 
broad, strongly bisinuate at the base; densely, rugulosely punctate, with coarser punctures intermixed, 
more or less sulcate towards the base, the basal depression transverse or triangular, moderately large. 
Elytra convex, a little wider than the prothorax, and widening to far beyond the middle, conjointly 
rounded at the apex and separately so at the base, compressed laterally below the shoulders; seriate- 
punctate, the sixth and seventh rows of punctures abbreviated anteriorly, the interstices strongly convex 
and very finely rugulose. Beneath sparsely punctate. Anterior femora unarmed. First ventral segment 
sulcate in the ¢. Body apterous. 
Length 13-17, breadth 4-55 millim. (¢ @.) 
Hab. Costa Rica (Sallé, Van Patten), Caché, Rio Sucio, Irazu (Rogers), Guaitil de 
Pirris, Reventazon, Tierra Blanca, Sarapiqui, Vara Blanca (Biodley). 
Apparently a common insect in Costa Rica, and easily distinguishable by the some- 
what inflated, sulcate elytra, the interstices of which are strongly convex. L. rojasi, 
