NO. 1981. NE ARCTIC SPECIES OF SAWELIES—ROHWER. 279 



original description of caeruleiceps and comes from approximately 

 the same locality differs from the original description of Isevis in 

 having the clypeus truncate. Konow describes the clypeus of Isevis 

 thus: "Brevi, punctato, apice late emarginato." 



The following characters may be useful in the determination of 

 this species: Supraclypeal area rectangular in outline, flat; middle 

 fovea large, walls sloping, quadrate in outline; frontal fovese small, 

 punctiform, circular in outhne; antennal furrows ending in puncti- 

 form foveas just above and inside of the frontal fovese; a deep, 

 large depression in front of the anterior ocellus, a furrow from ante- 

 rior ocellus to the poorly defined postocellar furrow; sheath broad, 

 straight above, broadly rounded apically, sharply tapering below. 



STROMBOCEROS (NEOSTROMBOCEROS) ASSAMENSIS, new species. 



In Enshn's table of the Oriental species of Sfromboceros this runs to 

 Isevis Konow and congener Konow. It differs from both of these in 

 having the apex of the femora yellowish and in the different confor- 

 mation of the head. 



Male. — Length 6.5 mm. Clypeus, truncate; supraclypeal area, 

 rectangular in outline, shghtly convex above; middle fovese, deep, 

 punctiform, circular in outhne; frontal foveee, punctiform, circular 

 in outline; antennal furrows, faint, shallow; ocellar basin represented 

 by a depression which is open below and V-d above; postocellar area 

 completely defined by furrows, about one and one-haK times as wide 

 as long; postocellar line a Uttle more than half as long as ocellocular; 

 pediceUum, longer than wide; third antennal joint, about one-third 

 longer than fourth ; stigma, gently rounded below, transverse radius, 

 nearly interstitial with the third transverse cubitus; first transverse 

 cubitus, obsolete; hypopygidium, narrowly rounded; tarsal claws, 

 cleft. Black; head with a faiut bluish tinge; labrum, posterior 

 margin of pronotum, first perapteron, apices of coxae, trochanters, 

 apices of f emara, and tibiae (except apex) yellowish white. Venation, 

 dark brown; wings, subhyaline. 



Khasi HiUs, Assam; one to three thousand feet. One male 

 collected March 17, 1907. Received from the Imperial Entomologist 

 of Pusa, India. 



Type.—€&t. No. 1676, U.S.N.M. 



Subfkmily N'EMLJk.TINJEJ. 



Genus PTERONIDEA Rohwer. 



PTERONIDEA PULCHELLA, new species. 



In Marlatt's revision of North American Nematinae this runs to 

 populi Marlatt. It is separated from that species in not having the 

 antennal furrows strongly depressed above the crest, in the shape of 

 the oceUar basin and other characters. 



