276 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I25 



a single region, a statement has been made to show its widespread 

 presence in the Municipality, but mention of specific streams has been 

 eliminated. The data have been presented in two lists. The first in- 

 cludes for each species the names of streams. Municipalities, and De- 

 partments ^^ in which it was collected ; before recording this informa- 

 tion, there is given the number (the nearest round number) of speci- 

 mens that has been collected of the particular species; larvae, and 

 adults caught while biting, are not included in the total. The second 

 list presents for each Department the species found therein. All 

 distribution data recorded below have been derived from the author's 

 personal collections unless otherwise credited. The distribution of the 

 species in relation to the endemic zones of onchocerciasis in Guatemala 

 has been shown graphically on maps 3 through 14. 



DEPARTMENTAL DISTRIBUTION ACCORDING TO SPECIES 



Cnephia aguirrei Dalmat, 1949 — 800 specimens 

 Department of Chimaltenango 



Rio Panacal, Finca Panacal, Acatenango 

 Rio San Vicente Pacum, Finca San Vicente P., Acatenango 

 Rio San Diego, Finca San Diego, Acatenango 

 Rio Seco, Finca Socorro, Acatenango 

 Rio Segunda Catarata, Finca Santa Emilia, Yepocapa 

 Department of El Quiche 



Stream between the town of San Miguel Uspantan and Rio Yesal, be- 

 tween kilometers 257 and 276 on National Route No. 7-W 

 Cnephia pacheco-lutiai (DeLeon), 1944 — 80 specimens 

 Department of Chimaltenango 



Rio Cipres, Aldea Los Pa j ales, Acatenango 

 Department of Solola 



Very small stream between Los Encuentros and Totonicapan on National 



Route No. I, about 4 miles from Los Encuentros 

 Another small stream along the same route, about 3 miles from Los 

 Encuentros 

 Department of El Quiche 



Stream between the town of San Miguel Uspantan and Rio Yesal (kilo- 

 meter 276), Route 7-W, Cunen 

 Cnephia roblesi (De Leon), 1943 — 150 specimens 

 Department of Solola 



Very small stream between Los Encuentros and Totonicapan on Na- 

 tional Route No. I, about 4 miles from Los Encuentros 

 Another small stream along the same route, about 3 miles from Los 

 Encuentros 

 Gigantodax aquamarensis (De Leon), 1944 — 750 specimens 

 Department of Quezaltenango 

 Rio Aguas Amargas, Zunil 



^1 A large political unit in Guatemala. 



