Dec, 1910.] GiRAULT : On THE FAMILY MyMARIDAE. 255 



vinces me that it belongs to Polynema Haliday and not to Stricho- 

 thrix Foerster. The species is a very striking one and should be 

 easily recognized. The specimens referred to were labelled " Cosmo- 

 coma n. sp." and the sets bore labels as follows: (a) "No. 860 e. — 

 from eggs of CE. nivcus in Raspberry (June 3, 1881, 2 J*'s, I J) 5 i^^ 

 resin-weed (June 3, 1881, i J*, i 5)- From resin-weed (June 7, 1881^ 

 I J*, 4 5's; June 10, 1881, 2 5's) ; proctotrupid from eggs of CEcan- 

 thus niveus, Fredonia, Kansas, May 31, 1881 (2 J^'s, i J)-" (^) 

 "33101.— 11-18-88— "; J 2. (c) " College Station, Texas, September. 

 Banks." I 5. (d) " Onaga, Kansas; Crevecoeur." 2 ^'s. 



On account of the fact that the original description of this species 

 was made from but two balsam-mounted female specimens, many 

 of its characters were not given, not being visible. I consider it im- 

 portant therefore with the present opportunity to add the following 

 supplementary descriptive details more for the purpose of adding to 

 a knowledge of the generic characters rather than to those of the 

 species. Also the male is described for the first time. 



Normal position. 



Female. — Length, 2 mm., more or less ; variable. 



The general color is rather yellowish-brown, not dark, the antennal club, 

 the five distal funicle joints and the tibiae dark, the club and funicle joints 

 5 and 6 the darkest of these ; body shining ; color of body uniform ; eyes with 

 a few short, minute, scattered hairs ; genas with some darker spots. 



(Dorsal aspect) face between the eyes concave, margined; vertex rec- 

 tangular, margined, the " vertexal carina " represented by a narrow margined 

 groove across the cephalic margin of the vertex, fuscous mesially, and along 

 the sides of the vertex near the eyes, also fuscous ; on the vertex caudad it is 

 present, crossing the occipital margin and proceeding into the occipital foram- 

 inal depression, ventro-mesad and there concolorous. The caudal or occipital 

 margin of the vertex is merely margined, not grooved. The ocelli in the 

 center of the occipital margin of the vertex, the lateral ocelli separated from 

 the cephalic ocellus by the margined occipital margin of the vertex and in 

 the dorso-caudal aspect, that is slightly within the occipital region, the cephalic 

 ocellus in the dorsal aspect ; ocelli distant from the round eyes, the lateral 

 ocelli slightly farther from each other than each is distant from, the eye 

 margin and slightly farther from the respective eye margins than each is from 

 the cephalic ocellus; antenna inserted above the middle of the face, widely 

 separated, near the eye margins and about a third the distance up the eye 

 margins. 



Pronotum with a narrow median carina, seen in certain lights only ; 

 genal sulcus absent. Parapsidal furrows nearly straight, oblique ; the meso- 

 scutum with a distinct median carina cephalad, its cephalic margin convexly 



