638 LATHRIDIIDA.—MYCETOPHAGIDZ. 
In this species the punctuation is extremely fine and the setosity so minute that the 
insect appears to be bare. The antenne are very slender, 11-jointed, the ninth joint 
but little larger than the eighth, the tenth slightly transverse. Head excessively finely 
punctate; eyes moderately large, very widely separated; the latter separated from the 
neck by a well-marked interval. Thorax strongly transverse, not much rounded at the 
sides, which are finely crenate; hind angles rectangular, sharply marked; punctuation 
very minute. Punctuation and setosity of the elytra extremely minute. Legs very 
slender. First abdominal segment with well-marked coxal lines. ‘Two specimens. 
Fam. MYCETOPHAGIDZ*. 
This is one of the smaller families of Coleoptera, as most of the genera referred to it 
in the Munich Catalogue have since been shown to belong elsewhere. Mycetophagus, 
Triphyllus, Litargus, and Typhea are the only genera that can be accepted as valid 
and as certainly belonging to the family. The Mycetophagide are very fragile insects 
and are but little collected. ‘Two genera allied to Zitargus from our region are not 
included in the above-mentioned Catalogue ; one of them has already been distinguished 
by Casey from North-American material. 
TRIPHYLLUS. 
Triphyllus, Latreille, Regn. Anim. 2nd ed. v. p. 98 (1829). 
This is a widely distributed genus, though it does not include many species. 
Although Leconte in his Synopsis of the Mycetophagide of North America does not 
mention any species of Zriphyllus, the genus is now well known as occurring there. 
Mycetophagus, which is well represented in the North-American fauna, has not yet 
been found in our region. 
1. Triphyllus perfectus, sp.n. (Tab. XIX. fig. 9.) 
Ferrugineus, antennarum clava, thorace elytrisque ex parte nigricantibus, his maculis numerosis testaceis. 
Long. 3-43 millim. 
Hab. Mexico, Cuernavaca 7000 feet (Flohr); Guaremara (Sallé), Volcan de Fuego 
6400 feet (Salvin), San Gerdnimo, Capetillo (Champion). 
Antenne red, with the club black, the last joint red at the extremity. Thorax 
strongly transverse, densely, somewhat finely rugose ; finely margined at the sides, not 
serrate, a small fovea in front of the base on each side of the middle. Elytra very 
finely punctate, blackish, with numerous yellow spots irregularly placed, most extensive 
about the base. 
* By D. Spare. 
