6 Trans. Acad, of St. Louis 



an enormous nnmlior of malos of that species \vere out 

 at that time, Tlie hirvae of Cicnulela were again ahun- 

 dant, ])ut I eould see D. zclhi do iiau,i,Hit hut walk or fly 

 ahout the low stul)l)h\ 



Pscudomcthoca canadinsrs Bike, f R, A. TJolnver.] Tliis 

 ])air of juutillids was found in copulo on .June 28. They 

 were walkin^]^ slowly along the clayey margin of a clover 

 field, the male riding llic female lit", hcing nnieh 

 smaller, covered onlv the rear half of her hotlv. The hodv 

 of the female, at a ])oint where the ahdomen joins the 

 thorax, is narrowly contracted. At this point the male 

 grasped her firmly with his jaws in order to hold his 

 position. The real union lasted foi* only a very few 

 seconds. This momentary mating was repeated so many 

 times that I concluded that this was the nonnal metliod. 

 Many of thcjn were to be seen among the new wlieat 

 stubble in a tield skirting the woods, where also Cicin- 

 dela holes were abundant. 



Dasi/mutilla acrubinata. [S. A. Rohwer]. Ono female 

 was taken July 3, on a path in the forest. 



DasymutiUa allardi Koh. [S. A. Rohwer]. This cow- 

 killer was seen on August 29, on a hard-packed baseball 

 diamond in a city lot. It was prowling about in the im- 

 mediate vicinity of several burrows of aculeate TTymen- 

 optera. 



Dasymutdla blauana Roll. [S. A. Rowlier]. At Lake 

 View, Kansas, two females were found walking ahout in 

 a sandy area by the roadside, and lurking about a hole. 

 When we inserted a pro])e into this hole, one of these 

 wasps jumped out, but upon opening the burrow we 

 found nothing but a colony of reil ants. At Creve Coeur 

 Lake, Mo., one s])ecimen was taken on a sandy area where 

 bees and some Pomi)ilid wasps were at work and where 

 Ciritidrla beetles abounded. 



DasymutiUa ferrugata Fabr. | S. A. Rohwer]. Some 

 half-dozen of these cow-killers were observed on the 

 sandv beach of the Kaw River at Lake View, Kansas, 



