fHE CANAbtAl? ENTOMOLOGlSt. 



ON CUTEREBRA EMASCULATOR, WITH DESCRIPTIONS OF 

 SEVERAL ALLIED SPECIES. 



BY D. W. COQUILLETT, WASHINGTON, D. C. 



Cuterebra emasculator, Filch. — This species was supposed by Dr. 

 Brauer to be the same as his C. scidellaris, but an examination of Fitch's 

 type, now the property of the National Museum, discloses the fact that it 

 is identical with C. fontinella, Clark. When describing the hairs of the 

 thorax as yellowish, Dr. Fitch had evidently examined them in a very 

 bright light, under which conditions they have a deceptive yellowish 

 appearance, but in reality are altogether black. 



The following five species, which appear to be undescribed, belong 

 to the same group as font'uiella, in which the hairs of the middle of the 

 mesonotum are black. They may be tabulated as follows : 



t. Abdomen wholly polished, destitute of pollen 2. 



Abdomen partly opaque poUinose, hairs of pleura largely or wholly 

 yellowish 4. 



2. Hairs of pleura largely yellowish 3. 



Hairs of pleura wholly black tenebrosa. 



3. Pleura with a cluster of black hairs above the centre, front of male 



three times as wide as the distance between the two posterior 



ocelli iiitida. 



Pleura destitute of a cluster of black hairs, front of male six time^ as 

 wide, etc polita. 



4. With a cluster of black hairs above the centre of the pleura, front of 



male three times as wide as the distance between the two posterior 



ocelli lepivora. 



Without this cluster, front of male six times as wide, etc .... latifrons. 

 Cuterebra lepivora^ n. sp. — $. Head black, destitute of light- 

 coloured pollen, front at narrowest point three times as wide as distance 

 between the two posterior ocelli, subopaque, an opaque streak of brownish 

 pollen on each lower corner contiguous to the eyes, hairs of front black, 

 several above the antennae yellow ; antennas black, apical two-thirds of 

 the arista and its hairs yellow ; face and cheeks sub-shining, rugose, an 

 opaque spot on each side of the face contiguous to the eyes, the hairs and 

 those of the occiput pale yellow. Thorax black, subopaque, hairs of the 

 dorsum black, a cluster above each wing and those of the pleura yellowish- 

 white, a cluster of black hairs midway between the wing and the head ; 

 pleura opaque, two polished black spots above each front coxa ; scutellum 



