214 The Ohio Journal of Science [Vol. XVII, No. 6, 



KEY TO THE NEARCTIC SPECIES OF DOLICHOCYSTA. 



Size small (length, 2 to 2.21 mm.); hood strongly depressed behind; 

 membraneous pronotal margins narrow, biseriate, very strongly 

 reflected just in front of the middle; elytra with a small tumid 

 elevation, with the costal area uniseriate D. acuta n. sp. 



Size larger (length, 2.33 to 2.75 mm.); membraneous pronotal 

 margins broader, with three to four series of areolae; elytra 

 with a large tumid elevation, costal area biseriate in greater 

 part D. venusta Champion 



Dolichocysta venusta Champion. 

 Seven specimens, taken at Fort Collins, Colorado, July 23, 

 1898. The species is new to the fauna of United States. It 

 was described from three specimens, two of which were from 

 Guadalupe, Low^er California, the other being without a definite 

 locality. The Colorado specimens are slightly larger than the 

 measurements given by Dr. Champion, but I can find no 

 characters that will separate them from the original description 

 and the excellent figure of the species. It is not very closely 

 allied to D. acnta n. sp. described herein. 



Dolichocysta acuta spec. nov. 



FoiTTi ovate, the apiceS somewhat acute. Head with a blunt 

 jirocess on each side between eye and antenna, the bucculae very large. 

 Eyes large, prominent, granulate. Antennae moderately slender, 

 reaching a little beyond the middle of the pronotum ; first segment 

 more swollen and a little longer than the second; third segment slen- 

 derest, cylindrical; about twice as long as the fourth; fourth segment 

 swollen towards the tip, clothed with a few rather long hairs. Pronotum 

 not very coarsely 'punctate, tricarinate, the carinae arranged as follows: 

 median carina rhost strongly raised, extending from the apex of tri- 

 angular process to the hood- and conjoined with the median raised 

 nervure of the hood; the lateral carinae united with the outer margins 

 of triangular process and extending almost to the outer posterior margin 

 of the hood, sinuate. Membraneous pronotal margins not very broad, 

 thin, biseriate, very strongly reflected just in front of the middle and 

 at this place tangent or nearly tangent with the dorsal surface of the 

 pronotimi. Hood moderately large, rather flat, strongly depressed 

 behind, the posterior margin rounded. Rostral sulcus not very deep, 

 the rostrum reaching between the intennediate coxae. Elytra with 

 costal area composed of a single series of large, irregular areolae; dis- 

 coidal area quadriseriate and reaching slightly beyond the middle of 

 the elytra. Wings not visible. Claspers in the male strongly curved. 

 Length, 2 to 2.21 mm.; width, .9 to 1.1 mm. The outer margin of the 

 elytra is emarginate in the macropterous form and rounded in the 

 brachypterous individuals. 



