60 Harry Scott Smith 
These two specimens differ somewhat in the sculpture of the 
metanotum, but otherwise they are identical. 
Tachysphex terminatus (F. Smith). 
1856. Larrada terminata F. Smith, Catalogue of Hymenoptera in the 
British Museum, iv, p. 291. 
1893. Tachysphex terminatus Fox, Proceedings of the Academy of 
Natural Sciences of Philadelphia, p. 520. 
Both sexes from West Point, Bridgeport, Indian Creek, and 
Glen during the month of August. 
Tachysphex consimilis Fox. 
1893. Tachysphex consimilis Fox, Proceedings of the Academy of 
Natural Sciences of Philadelphia, p. 526. 
A single male from Glen seems to belong here. I have also a 
related species which I am unable to identify on account of the 
fact that the abdomen is mutilated. 
Family BEMBICIDAE 
KEY TO THE GENERA 
Anterior ocellus round or reniform; maxillary palpi six-jointed, labial 
Pal piesfOUr-jOIMNLE" cin. cde cies hee Seek Oe seek acietios Breer Monedula 
Anterior ocellus linear, transversely arcuate. 
Metathorax flat or convex posteriorly, not compressed laterally; last 
ventral segment of male ending in a single spine. 
Mandibles not dentate; maxillary palpi three-jointed, labial palpi 
One=jomitedigns Joey. Bis oso wa clahore Serie ean ache eee vente Microbembex 
Mandibles dentate; maxillary palpi four-jointed, labial palpi two- 
HOME s eke cokes Oc bales aioe oe Sent O Ceca Orne aoa Bembex 
Metathorax excavated posteriorly, compressed laterally; last ventral 
segment of male ending in three spines; mandibles dentate; max- 
illary palpi six-jointed, labial palpi four-jointed.......... Bembidula 
Genus Monedula Latreille 
SYNOPSIS OF THE SPECIES 
Freial OS thc <5 ic stesso oc w aaolcteneeioiose etree, STAD aden mein eee oe eee iL 
Mialles: ls osvenca stl aritare naeolony fates ein fora ick TSS TRIG SIA Oran ete eC Eee 5 
1. Mesonotum with a U-shaped yellow mark; eyes convergent above; 
S176) AG-2S WEE aos saen A chang eee aimee Ne eterna speciosa 
1. Mesonotum at most with two longitudinal lines...............0.- 2 
2, Pulvilli datee and distiniet®.c.1. 5s sex be sch cates ties wee ee 3 
