Vol. XXVli] ENTOMOLOGICAL NEWS. 441 



of antennae. Scutellum apically pointed. Fore legs slender; their 

 tibiae without extensor bristles or setulae. Middle and hind legs with 

 distinct bristles and claws well developed. All pulvilli wanting or 

 minute. Length 7.0 to 12.0 mm. 



Variations. Coquillett, in his paper previously mentioned, 

 considers latcralis a variety of altcrnata, but later relegated it 

 again to specific rank. It however has priority over alter- 

 nata. 



The amount of variation I cannot attempt to suggest with 

 the small series before me, but even this shows some worthy of 

 note. 



The color of the pile and tomentum will vary from white to 

 dark golden yellow. The yellow tomentum on the segments 

 3, 5, 6 may sometimes be absent, but it is always present on 2 

 and 4 and on 5 to 7 ; it may be apical, and apparently basal, de- 

 pending on the amount of extension of the segments. The 

 ground color of the basal angles of segments I to 2 is some- 

 times pale. In a few specimens the pile of the face, part of the 

 pleura and niore or less of the venter is black. In the males 

 the lateral marginal scales of segments 4 to 7 are mostly black, 

 but not in all cases. 



variety fulvipes. 



1887. Anthrax fulvipes Coquillett. Trans. Amer. Ent. Soc., xiv, 166 

 [Arizona]. 



This seems to be a good variety. The femora are, at least 

 basally and sometimes entirely, pale. 



variety compressor. 



1887. Anthrax compressor Coquillett, Trans. Amer. Ent. Soc., 165 

 [California]. 



I do not consider this a distinct species. It seems to be 

 based on the tomentum of segments 2-4 being lighter in color 

 than that on segments 5-6. 



variety perimele. 



1830. Anthrax pcrlmclc \Yiedemann, Aus. Zweifl. Ins., i, 583. 

 I have not seen this form to know it. Coquillett* records it 

 from California. He characterizes it as having the tomentose 



*i887. Trans. Am. Ent. Soc., xiv, 166. 



