4 THE CANADIAN ENTOMOLOGISt. 



3. Third joint of the antenna; not longer than the fourth ; second cubital 

 cell narrowed above ; antennae in female clavate, in male subfiliform, 

 the last joint more or less enclosed by the penultimate ; mandibles 

 3-dentate, the teeth acute, the outer tooth a little the 



longest (3) Sapyga, Latreille. 



(Type Apis clavicornis, Fabr.) 

 Third joint of the antenna; longer than the fourth ; second cubital cell 

 not much narrowed above ; antennai in female subfili- 

 form (4) Sapygina, Costa. 



(Type Sapyga decemguttata, J urine.) 



Family XXXV.- -Myzinidae. 



This family is usually classified with the Scoliidce. According to my 

 views, it is (luite distinct, although closely allied, and is easily separated 

 by the difference in the shape of the eyes in the females, and by the 

 totally different armature of the male genitalia. 



The eyes in a female Myzinid are always entire, never emarginate 

 within, as in the Scoliidce The males have the eyes emarginate or 

 sinuate within, much as in the Scoliidce, but are easily distinguished 

 by difference in venation and by the armature of the genitalia, the 

 tip of the abdomen always ending in a single upward curved aculeus. 



In the Scoliidce the abdomen in the males terminates in three 

 straight spines. 



The family is without doubt parasitic, Init nothing seems to be 

 known of llie habits of the many sjiecies already described. 



Many of our species are common in midsummer and early fall ; 

 tliey nre conspicuous and easil}' observed, and some of our younger 

 entomologists should make an effort toward unravelling their life- 

 histories. 



The genus Menisus, Du Buysson, I do not know ; it may be 

 Sapygid, but I am unable to place it from the description. 



The species in our catalogues, under the genus Myzine, do not 

 belong to it, but should be removed to the genus Plcsia, J urine. 



Table of Genera. 



1. Females : eyes entire, Jiot emarginate within 2. 



Males : eyes more or less emarginate within 11. 



2. Wings fully developed, normal 3. 



Wings much abbreviated, the apex pointed, incised or bilobed 9. 



