400 ENTOMOLOGICAL NEWS. [March, 



Arrangement of the extra-American Species of Mutilla. 



(Described by Cresson and Blake) according to my classification 

 of the Genus. 



By William J. Fox. 

 In the synopsis entitled "The North American Mutillidae,"* 

 it was found necessary to exchide the Mexican, Central Ameri- 

 can and West Indian species of that family for want of suffi- 

 cient material from those regions. This want has not yet been 

 remedied, and the species noted in these pages practically form 

 the extra-American collection of the genus Mutilla of the 

 American Entomological Society. While an arrangement of 

 all the known species from the regions mentioned would be of 

 more value, the present limited one will, perhaps, be not en- 

 tirely useless. 



2. Group canadensis. 



M. izucar, chiapa, auripes, psammadroma, lerma, bisignata,^ 

 gothica, pdricola, minutissima, laticeps, xalapa, zapoteca, robin- 

 soni, all of Blake. 



3a, Group qaadridens nova. 



M. qiiadridens Blake, represents a group not found in the 

 United States, and is another link in the chain that proves the 

 unity of the species of Mutilla under one genus. In the large 

 spinose head and fiddle-shaped thorax it approaches group 

 canadensis, but it differs in pos.sessing a di.stinct pj'gidium, in 

 which characteri.stic it separates it.self from group simillijna ; 

 and in the nodose first abdominal segment it is different from 

 both of these groups. In the latter respect it shows its rela- 

 tion to groups Ji'aco and asopus, from both of which it differs in 

 the large spinose head. 



In shape, quadridetis and robiusoui are quite similar, hut the 

 latter has a sessile first segment. 



5a. Group gabbil nova. 

 In the almost edentate mandibles, gabbii Bl. differs from all 

 the preceding groups, but its relatioji to groups canadensis and 

 simillima is shown by the broad, sessile, first abdominal .seg- 

 ment. There is no distinct pygidiuni. 



• Trsnt. Am. Km. Soc. xxv, 10^99. 



t May possibly belong to 3. Group ilmilUwa. 



