1931 ] Notes on Hippoboscidse 193 
piece” of the male genitalia of mazamse as figured by Ferris 
and Cole. 
So far as one can judge from Speiser’s description, his 
L. conifera is likewise a synonym of L. mazamse. The 
head is described as follows : “Der Kopf ist durch eine ganz 
ausserordentlich kurze Stirnstrieme charakterisiert, die 
wenig mehr ist als ein matter querer Spalt zwischen dem 
Scheiteldreieck und der sehr breiten Lunula.” The un- 
usually wide frontal lunule, with consequent shortening of 
the medio-vertex (or frontalia), must have been accidental, 
either due to the mode of preservation or to the incomplete 
retraction of the ptilinum within the lunule. 
There is also nothing in Bau’s description of his L. 
surinamensis , supposedly from Surinam, 1 that does not 
apply to our many specimens of L. mazamse from Yucatan, 
Guatemala, British Guiana, and Brazil. Bau writes: “In 
der Bildung des zweiten Abdominal-Tergits gleicht diese 
Form den amerikanischen Arten Lipoptena depressa Say, 
var. mexicana Townsend, mazamse Rondani und conifera 
Spieser. Die beiden ersteren haben auf dem membranosen 
Teil des Abdomens zwei kleine querliegende Chitinplatt- 
chen, welche der L. surinamensis fehlen. L. mazamse ist 
auch kleiner, nur 2*4 bis 2*4 mm. lang.” The length of 
dry specimens of L. surinamensis is given as 3.25 to 3.9 
mm. in the female and about 3 mm. in the male. I am 
unable to find any trace of transverse chitinous plates on 
the membranous portion of the abdomen (dorsally) in my 
several lots of L. mazamse (preserved in alcohol). In the 
Yucatan lot the females measure from 2.8 to 4 mm. Of 
course, in both sexes dry specimens give no correct idea of 
the size of a hippoboscid fly, and in the female the size also 
depends upon the condition of the larva contained in the 
abdomen. 
1 1 have been unable to locate a locality “Macaraibo” on any of 
the South American maps I have seen. Perhaps the locality was 
really “Maracaibo,” which, however, is in Venezuela. 
