184 University of California Publications. [Entomology 



ILYTHEA Haliday. Type spilota. 



North American Species. 



1. Legs brownish black with yellow rings at the knees 



spilota Curtis. 



Legs yellow, the tip.s uf the tarsi brownish, .flaripes Williston. 



flavipes Will. 96W403, 97W4, 00C260, 05A625. St. 



Vincent, Porto Rico. 

 ?oscitans Wnlk. .■57W23:;. 780^202. 9GB2(,>8, 00C2G0, 



0.jA(;2."). United States. 

 See Ephydra and Scatella. 

 spilota Curt. (30L37, 78OS204, 0r)AG25. North America. 



European Species. 



2. spilota Cint. 32C413, r)3W2f)4, 04S263, 9GP.133. fiotala 

 44S186. North and Middle Europe. Silesia. 



PHILOTELMA I'.ockcr. Type aiiuuiuhi. 



anomala IUh k. '.t(nn(>4. 9GS291. Kolilfiirter iNloor 

 (Silesia I. 



BECK ERI ELLA Williston. Type bispinosa. 



bispinosa Thorns. 97W2, 97S265, Ephydia hi.siiiiiosa 

 G8TT.93, 70V442, 9GB27]. Rio de .Taneiro. 



G ASTRO PS Williston. Type nigcr. 

 1. Antennas red, third joint at tip and on upper ]iart black.... 



n igcr Williston. 



Antennae, except upper edge and sometimes bi-oad apex of third 

 joint yellow ucbnlo-svs Coquilleit. 



nebulosus Coq. 00C34. 0.5AG24. North Carolina. Georgia. 

 niger Will. 97W.3, 97S265,. 0dA624. Grenada ( W. L), 

 Rio Janeiro. 



APETAENUS Eaton. Type HtoraUs. 



litoralis Eaton. 7.5E58, 9GB272. Kerguelen Islands. 



CHAMAEBOSCA Speiser. Type microptcra. - 

 microptera Speis. 03S67. Chile. 



Note. — Mr. Coquillett seems to have recognized that the species oscitan.s 

 (Walker) belongs in this genus (00C2G0). In Smith's Catalog of New 

 Jersey species it is placed in Scatella. The original Walker descrijttion, 

 which places it in Ephydra, does not make the generic characters suffi- 

 ciently certain. It appears that Coquillett or Johnson (Smith's Catalog) 

 should give us a description of this species by which an agnvnicnl might 

 be reached in regard to its generic relations. If an llythea, oscifaits 

 differs from both spilota and flavipes in that the antennal a'ista is bare, 

 while in the former there are six to eight rays and in the latter eight. 



