AMERICAN COLEOPTERA. 359 



Synopsis of the ENDOMYCHID.E of the United States. 



BY G. R. CROTCH, M. A., CANTAB. 



Tarsi subtetramerous or tetramerous, head narrowed behind the 

 eyes, clypeus distinct, antennae inserted on the front, generally elong- 

 ate ; maxillary palpi with the last joint subcylindrical ; thorax tri- 

 sulcate at the base, meso-epimera rhomboidal, nieta-episterna in part 

 obliquely truncate; anterior coxae globose, cavities open, femora not 

 grooved to receive the tibiae, claws simple ; larvae fungivorous. 



The species resemble Coccinellidse in their tarsal structure, but are 

 at once known by their cylindrical palpi and long antennae. The 

 family should follow Mycetophagidse in systematic position. 



Of the 9 genera composing the family 5 are common to Europe, and 

 one species, Mycetsea hirta, is identical. Two other species, Mycetina 

 perpulchra and Endomychvs biguttatus, are also closely allied to these 

 European representatives. Two genera, Phymaphora and Rhanis, are 

 peculiar to North America, Epipocus extends southward to New 

 Granada, Stenotarsvs is found everywhere in the tropics. The group 

 has been carefully monographed by Gerstaeeker in 1858. 



A. Tarsi sub-tetramerous, third joint very minute ENDOMYCHIDES. 



B. Ligula transverse, emarginate or truncate Dapsini. 



C. Anterior coxae contiguous Eycoperdina. 



C 2. Presternum extending behind the coxae. 

 D. Thorax with no lateral impressed line. 



E. Thorax with a deep transverse impression at the base. ..Mycetina. 



E 2. Thorax simple Epipocus. 



D 2. Thorax with an impressed lateral line Stenotarsus. 



B 2. Ligula oblong, apex rounded Endomychini. 



0. Maxillary palpi with the last joint broad Emlomychtis. 



A 2. Tarsi distinctly tetramerous..... MYCET^EIDEK. 



B. Anterior coxae contiguous Rhanis. 



B 2. Coxae separated by the prosternurn. 



0. Thorax narrow, sub-quadrate; antennae dilated in ^...Phymaphora. 

 2. Thorax transverse, with a lateral impressed line 



D 1. Antennae 11-jointed, form oval Myceta^a. 



D 2. Antennae 10-jointed, form globose Alexia. 



EYC©PEISI>IftA, Latr. (1807). (Type bovistce.) 

 E. ferruginea, Lee. Ann. Lye. i., p. 172; Proc. Phil, vi., p. 360, 1; Gerst. 

 Endom., p. 210, 1. — Pitchy-black, finely punctulate, antennae, head, legs, mar- 



