2O4 ENTOMOLOGICAL NEWS. [May, '09 



by the golden pubescence of the front, the different emargina- 

 tion of the eight ventral segments, etc. 



Tachytes calcaratiformis n. sp. 



$. Length 16 mm. Anterior margin of the clypeus in the middle 

 produced into a rather strong emarginate tooth ; sides of the clypeus 

 with three distinct lateral teeth. Except where mentioned, this species 

 species is like propinquus Roh. Metanotum hut very slightly sulcate, 

 with a distinct fovea at the apex ; dorsal abdominal segments more 

 coarsely sculptured ; ventral segments more strongly punctured ; pubes- 

 cence of the clypeus silvery or slightly golden. 



(j\ Length 17 mm. Slender. Anterior margin of the clypeus not pro- 

 duced in the middle, laterally with three rather small teeth. Except 

 these points it is different from the female ; middle sulcus of the vertex 

 stronger ; scutellum impressed, middle furrow of metanotum not quite as 

 strong ; the pygidium does not have a golden tint. Emargination of the 

 eight ventral segments rounded, perhaps a little deeper than brevivenlris 

 Cress., but very similar. 



Hab. Two males and one female, Van Cortlandt Park, N. 

 Y., September 12, '03, numbers 25902 and 932. Types in the 

 Public Museum of Milwaukee. 



The female is almost like Calcaratus Fox, differing only from 

 Fox's description in not having the scutellum impressed, and 

 having the pygidium more silvery. 



The male is also close to calcaratus Fox, but the teeth of the 

 clypeus are more distinct ; the lobes of the eight ventral seg- 

 ments are straight on the outer margin, and the emargination 

 is deeper more like breviventris Cress. From breviventris it 

 may be easily known by the longer spur of the hind tibiae 

 being longer than the basal joint of the hind tarsi. 



Calcaratus Fox, propinquus Roh., dubitatus Roh. and calca- 

 ratiformis Roh. are all closely related. They are not as dis- 

 tinct species as most of the other described Tachytes, yet I do 

 not think that they are varieties. They may be separated as 

 follows : 



Males i. 



Females 3. 



i. Emargination of the eight ventral plate narrow, not very deep, lobes 



broad ; front with golden pubescence dubitatus. 



Emargination of the eight ventral plate much broader ; front with sil- 

 very pubescence 2. 



