brues: parasitic hvmenoptera. 41 



Cryptinae. 



This part of the Ichneumonidae is more poorly represented than 

 any of the other subfamilies, only three genera, Phygadeuon, Hemi- 

 teles, and Cryptus appearing in the present collection. In a previous 

 paper ('06) I have described a species of Mesostenus from Florissant, 

 and there are numerous records of the group from European deposits. 



Brischke ('86) mentions the presence of Pezomachus in Baltic Amber, 

 and there are in the Scudder collection now before me a couple of speci- 

 mens which are possibly males of this genus. 



Ichneumonit.es bellus, Heer ('67) is probably a cryptine. Heer has 

 also described an Hemiteles from Radoboj and Brischke includes this 

 genus in his list of Amber Hymenoptera ('86). 



Cryptus has presumably been found a number of times, but all 

 records except those of Gravenhorst ('35) and Brischke ('86) on 

 Amber fauna are rather doubtful, even Heer's C. antiquus ('49) to 

 judge from his figure which shows an insect with broadly sessile abdo- 

 men. 



Phygadeuon sp. 



There is a single specimen in the Scudder collection, No. 600, No. 

 2123, M. C. Z., Florissant, Col., which belongs without much doubt to 

 this genus, but it is not in a sufficiently good state of preservation to 

 describe. It is dark colored, with hyaline wings, and about 6 mm. in 

 length. 



Hemiteles Gravenhorst. 



Four species belonging to this genus are contained in the present 

 series. 



Key to the Florissant species of Hemiteles. 



1. Stigma narrow, lanceolate, nearly four times as long as its greatest 



width on a line perpendicular to the eosta; large species, 9- 



10 mm H. prisons, sp. nov. 



Stigma wide, subtriangular, marginal cell less than three times as 

 long as wide; smaller species, not over 6 mm. ..... 2. 



2. First section of the radius distinctly shorter than the upper side of 



the second discoidal cell; antennae slender at base. 



H. lapidescens, sp. nov. 



First section of the radius as long or nearly as long as the upper side 



of the second discoidal cell 3. 



