6 
1878, ] 605 [LeConte. 
smaller than the 9th and 10th, and moreover, so little differ- 
ent in width and length from the 7th, that it seems more 
natural to view it as belonging rather to the stem than to 
the club, which would thus be properly designated as two- 
jointed. 
MYCETOPHAGUS Hellw.* 
The species known to occur in our fauna are eleven in number, three 
of which will now for the first time be described, two of these presenting 
characters worthy of special mention, 
M. comfusus departs remarkably in sculpture from the other species, 
to a degree that one of the generic characteristics becomes lost. There is 
no arrangement of punctures in striz except very feebly at middle near 
the base, while the punctures of the intervals become so numerous and 
large that the punctuation becomes confused as in Triphyllus, 
M. temuifasciatus has a peculiar male sexual character, consisting 
of a transverse row of fine silken hairs on the first abdominal segment. 
No other species in our fauna has any other male character than that af- 
forded by the anterior tarsi which are three-jointed, in the female four- 
jointed. 
In the vast majority of our species the antenne are either somewhat fu- 
siform or gradually thickened to tip; two, however, have the last three 
joints of equal width and rather suddenly wider than the preceding. Other 
characters of less importance are made use of in the following synoptic 
table. 
Table of species of MyCETOPHAGUS. 
Elytra striato-punctate....... SDI C.CODUSC ou Odo cot GOUUDOOSDHO Ob OOo iL; 
ELyirarGonen sea lys PUNCUIFEG .j.\sj4s seis smloe tele  w sislcinvele Molelein o sidierniele ale 6. 
1. Antenne gradually broader externally or sub-fusiform............ ates 
Antenne with last three joints rather suddenly larger.............. “o8 
pi) ThorasrOgder ain basetes ails"... Bela tith aoa ote. Vetted Sgoacogadooe 3. 
Mhoraxnarrowerats basethanrat middle: .y.%.1js << ens iets osteo stein os 4. 
3. Abdomen moderately shining, punctuation less dense : 
Prosternum coarsely punctured. Antenne longer than head and 
[OQ 1g7B-6 Leet dic UO price cis Oe of OU SA DORE BR Der punctatus. 
Prosternum nearly smooth. Antenne not longer than head and 
W)INO EE a res coe Bk ro nero SiC AiG Bo OF OAT HOCEE californicus. 
Abdomen densely and finely punctured, sub-opaque. 
Prosternum nearly smooth at middle................ ...flexuosus. 
Prosternum densely and coarsely punctured......... bipustulatus. 
* For this synopsis of Mycetophagide, and the descriptions of the new species 
belonging to the family, I am indebted to the kindness of Dr. G. H. HoRN. 
