38 Journal New York Entomological Society. [Vol. xiv. 



Cyrtophyllus perspicillatus Fabricius (PI. I, Figs. 3, 4, 7). 

 Locusta perspicillata Fabr., Ent. Syst., II, 36 (1793). 

 Cyrtophyllus perspicillatus Burin., Handb. Ent., ii, 697 (1838). 

 Pterophylla concava Harr. , Encycl. Americana, viii, 42 (1835). 

 Cyrtophyllus zimtnermanni Sauss., Rev. Mag. Zoo]., 1859, 206 (1859). 

 Cyrtophyllus concavus Scudd., Journ. Bost. Soc. Nat. Hist., 1862, 272 (1862). 



Considerably less robust than Paracyrtophyllus robustus. Thorax usually a little 

 longer than broad, sometimes quadrate, the disk transversely convex, longitudinally 

 flat or sometimes considerably elevated posteriorly ; the anterior margin straight, the 

 posterior margin rounded or subangulate ; transverse sulci, at" least the anterior one, 

 very distinct and well defined ; lateral carinre indicated only behind the principal 

 sulcus and there usually quite rounded. Elytra broad and strongly concave, of the 

 same structure as those of P. robustus but more elongate than those of that species, 

 those of the female being about two and one half times as long as broad ; wings 

 ample, not as long as the elytra, but considerably longer than those of P. robustus. 

 Supraanal plate of both sexes somewhat longer than broad, flat or nonsulcate or con- 

 vex and longitudinally sulcate only in the basal fourth or little more, often more dis- 

 tinctly so in the female, apically broadly rounded or subtruncate ; subgenital plate of 

 the male two or more times as long as the pronotum, the projecting portion somewhat 

 hastate, the two halves of the divided apex generally more or less connate ; cerci of 

 female round, six or seven times as long as the basal breadth and slightly curved up- 

 wards, the tip usually very inconspicuously notched; cerci of the male forked, 

 the two branches divergent and incurved, the lower branch simple, with a minute 

 subapical denticle on the lower side and usually a little shorter than the upper one, 

 the incurving apical portion not quite as long as the scarcely tapering basal portion. 

 Ovipositor three or more times as long as the pronotum, microscopically serrate below 

 near the tip, the serrations sometimes very inconspicuous, armed laterally, as in P. 

 robustus, with two or three short transverse subapical ridges. 



Length, pronotum, male, 5.5-6; female, 5.5-6; elytra, male, 

 35—38; female, 37 ; posterior femora, male, 20-21.5 > female, 20-23 ; 

 subgenital plate, male, 12-14. 5; ovipositor, 18-20 mm.; width, pro- 

 notum, male, 6-6.5 3 female, 6.25-6.5 ; elytra, male, 18-21, female, 

 16; subgenital plate, male, 2.5-2.75 ; ovipositor, 3.25 mm. 



This species extends south to South Carolina, west to Kansas and 

 north into Canada. I have specimens before me from Massachusetts, 

 New York, New Jersey, Maryland, District of Columbia, North Caro- 

 lina, Missouri, Kansas and Iowa. 



There are a number of minor variations present in the structure 

 of this and the following species. The tip of the upper branch of 

 the cerci of the male is sometimes simply acute and sometimes with 

 the point subapical. The ventral subapical dentical of the lower 

 branch is sometimes obsolete and there is a little variation in the shape 

 of the elytra, of the posterior border of the pronotum and in the dis- 



