129 



This genus differs much from any other iu its superficial appearance, and is 

 especially distinguished by the peculiar formation of its eight-jointed antennse, of 

 which the second joint seems to form part of the funiculus, and is, contrary to the 

 usual dimensions, smaller than the third ; the third articulation seems to represent 

 the more normal three or four joints, but I cannot perceive in it any vestiges of 

 division, even when immersed in Canada balsam, and examined under a quarter- 

 inch power ; all the subsequent joints are of the usual Corylophide type. I did not 

 venture to dissect the mouth of this unique specimen, but both the labial and 

 maxillary palpi clearly exhibit the apical joint broad and rounded as in the genus 

 Conjlophus. 



Oligarthrum Waterhousii. 



A. Waterhousii, Matthews, Ann. and Mag. Nat. Hist. 1887, p. 110. 



L. c. i*% lin. = 0'75 mm. — Ovale, valde convexum, nitidum, sat profunde punc- 

 tatum, castaneum ; pronoto magno, antice ovaliter rotundato et modice reflexo, 

 indistincte punctato, interstitiis glabris, nitidissimis, margine anteriori pellucida, 

 margine basah leviter sinuata, angulis acutis ; chitris pronoto sesqui longioribus, 

 hand latioribus, ad humeros latissimis, sat profunde punctatis, interstitiis glabris, 

 nitidis, lateribus leviter marginatis, apice valde obtuso ; pygidio minime exserto ; 

 pedibus atque antennis rufo-testaceis. 



Body perfectly oval, very convex, shining, rather deeply punctured on the elytra, 



castaneous. 

 Head rather large, mouth deflexed ; eyes large and prominent, castaneous ; antennas 



inserted near the eyes, rather short, rufo-testaceous. 

 Thorax large, ovally rounded and moderately reflexed in front, indistinctly punc- 

 tured, with the interstices smooth and very shining, anterior margin pellucid, 



basal margin faintly sinuated, with the angles acute. 

 Scutellum moderate, subtriangular. 

 Elytra one-half longer, but not broader than the thorax, widest at the shoulders, 



rather deeply punctured, with the interstices smooth and shining, sides slightly 



margined, apex entire, very obtuse. 

 Abdomen with the pygidium very slightly exposed. 



Legs moderate, rufo-testaceous, anterior tibise very long, and much incurved. 

 Under parts entirely castaneous, metasternum and first ventral segment moderately 



and distinctly punctured. 

 Habitat, South America. Found iu Chili. 



The only example of this species which I have seen is in the collection of the 

 British Museum. It may be easily recognized by its perfectly oval unicolorous 

 body, the large size of its thorax, the long incurved anterior tibia, and the peculiar 

 formation of its eight-jointed anteunte. 



PELTINUS. Pl. IV., A. 

 Peltinus, Mulsant, Opusc. Ent. xii. p. 137, 1861. 



Corpus subhemisphericum, aliquando postice parum attenuatum, glabrum, niti- 



dissimum. 

 Caput minutum, sub pronoto totum occultum ; oculis modicis ; subtus ore deflexo, 



et parte gulari brevi. 

 Antenna (PI. IV., A, fig. 7) geuiculata), plerumqne breves, robustffi> decem-articu- 



latse ; 1 perraagno, valde rccurvato ; 2 magno, ovato, primo breviori et minus 



incrassato ; 3 secundo multo breviori et graciliori ; 4 et 5 parvis, transversis ; 



