48 ENTOMOLOGICAL NEWS. [Feb., '06 



W. Horn as a subspecies of tranquebarica. It is described 

 from Placer Co., California, and is reported by Mr. Leng as 

 occuring also in Oregon. Accepting Dr. Horn's dictum in 

 regard to the position of this form, my suggested arrangement 

 of the tranquebarica series would be as follows : 

 Cicindela tranquebarica Herbst. 



Syn. vulgaris Say, obliqiiata Dej., Kby., kirbyi Lee., 

 horiconensis Leng. 



Subsp. mbex Horn. 



Syn. roguensis Harris. 

 Aber. vibex aut. post. 



Subsp. sierra Leng. 



Subsp. plutonica Casey. 



From what has been written concerning the various geogra- 

 phical races and local forms, it will be noticed at once that the 

 species as a whole is more homogeneous in the northern parts 

 of the range, while to the south it tends to split into many 

 imperfectly differentiated assemblages of less than specific 

 value. A nice problem is offered to some student who will 

 undertake to work out the details of probable origin and dif- 

 fusion of the many types of Cicindela in North America. 



A New Tabanus Related to punctifer. 



BY D. W. COQUILLETT. 



Tabanus subniger n. sp. Near punctifer but larger, base of front tibia? 

 not whitish, abdomen with while hairs along the sides and apex, etc. 

 Black, with a tinge of 'brown, the mesonotum and scutellum brownish 

 yellow, gray pruinose and covered with white hairs ; elsewhere the hairs 

 are chiefly black except along the sides and apex of the abdomen wheie 

 there are many white ones which become more numerous posteriorly ; 

 front calypteres also fringed with while hairs. Front very bread above 

 the subcallus with parallel sides, this portion being about two and a half 

 times as long as wide, subcallus opaque, grayish pruinose, callus pol- 

 ished, transversely oval and with an indistinct, linear prolongation above. 

 Eyes bare. Wings gray; costal cell and stigma pale brown, a brown 

 cloud at base of second stibmarginal and of the posterior cells. Length, 

 25 mm. 



Lake Forest, Illinois. A female collected March 27, 1904, 

 by Dr. J. G. Needham. Type No. 8301, U. S. Nat. Mus. 



