48 EDWARD P. VAN DUZEE. 



spots or along the borders of streiuiis or other bodies of water. It 

 may be distinguislied from the foregoing by tlie calloused ruga con- 

 necting the humeri which are more produced than in variolarins, 

 and the genital segment of the male wants the black spot found in 

 that species. 



EiiNChistus CrHS!<iU!« Dallns. 



This seems to be a southern form. I have one specimen taken in 

 Georgia by Prof. W. F. Scott, and another from Florida kindly 

 given me by Mr. Heidemann. It is a})parently a rare species. Its 

 thick convex form with the short acute humeri pointing well for- 

 ward will distinguish it from all our other species. 



EiiscliiNtiis zopiioteii$<»i«<» Distant. 



Desei'ibed from Mexico. I have an example from Galveston, 

 Texas, that differs only in having the humeri subacute. It has the 

 convex elongated form of strenus, but the upper surface is more 

 regularly punctured and not so roughly sculptured. 



EuschiNlns crenator Falir. 



This common South American species has been recorded from 

 Texas and Arizona, and Mrs. Slosson has sent me an example 

 labelled " California." It may be distinguished by its small size, 

 broad somewhat depressed form, acute pi'ominent humeri and the 

 narrow male genital segment which has a feeble sinus at apex. The 

 upper surface is dotted with smooth pale points, and the edges of 

 the pronotum are usually blackish and strongly serrated. 



Enscltii^tii!^ bifibiilus P. B. 



I have received examples of this species taken in Florida by INIrs. 

 Annie Trumbull Slosson and Prof. W. S. Blatchley. It has about 

 the size and f )rm of variolarius, but the pale immaculate antennae 

 and legs and the undotted membrane will distinguish it. The pro- 

 notum has a somewhat indefinite callou.sed ruga between the humeri. 



' En<«<*histus <*omptu»« Walker. 



Some time ago Mr. Heidemann kindly sent for my inspection an 

 exaniple of this species that was taken in Texas. According to Stal 

 it may be distinguished from all our other species by the pale cal- 

 loused margin of the abdomen. A good figure is given by Distant, 

 PI. I, fig. 11, of the Biologia. 



