SARCOPHAGA AND AIXIES 145 



No. 65. Sarcophaga aculeata var. gavia n. var. 



Differs from the species only in the genitaha, 

 and in these principally in two respects: the lateral 

 lobes of the distal segment of the penis are much 

 larger, heavily chitinized, and spinose on the outer 

 side; while the apical processes are stout and much 

 more strongly divergent at their base than in acute- 

 ata, so that they form a U rather than a V. 



Five males; two (including the type) from 

 Koehler, N. M. (W. R. Walton, coll.) ; two old speci- 

 mens from the Bureau of Entomology are marked 

 only "6-1690"; a fifth from Ocean Grove, N. J., may 

 be another variety, but is not in very good condition 

 to identify. 



Holotype.— Male, No. 20527, U. S. N. M., from 

 Koehler, N. M. 



No. 66. Sarcophaga aculeata var. taediosa n. var. 



Males. Differs from aculeata in no measurable 

 way, except in having the characters of the penis set 

 forth in the table and shown in the figure; the for- 

 ceps also are in back view uncommonly thin and at 

 tip more broadly truncate than in the related forms; 

 the front of some specimens is a little narrower, the 

 width compared with the entire head being .158, .156, 

 .172, .181, .173, .151, and .161 (average .165). 



Seven males: five Brookings, S. D., two of these 

 dated May 30, 1891 (all collected by the writer) ; one 

 "12 miles northM^est of Lusk, Wyo., July, 1895," in 

 the Kansas collection; one Koehler, N. M. (W. R. 

 Walton). 



Three females, Brookings, S. D., are of the same 

 lot as the five males and presumably the same species, 

 but offer no distinctive characters; the width of the 

 front is .292, .285, .302 (average .293). 



Holotype.— Male, No. 20527, U. S. N. M., from 

 Brookings, S. D. Allotype, female, same number 

 and locality. 



