360 STUDIES IN THE ISCHNOPTERITES (oRTHOPTERa) 



Characters of cf . — Size somewhat variable but averaging smaller than in 

 S. capitata, form a little more slender. Head with eyes no larger than in 

 capitata; interocular space distinctly narrower than interocellar space, slightly 

 more than three-fifths as wide. Ocelli much as in lila but slightly smaller.'* 

 Maxillary palpi with third joint rather elongate, fourth slightly shorter, fifth 

 (distal) joint slightly shorter than fourth. Tegmina and wings as given in 

 generic description, fuUy developed. Dorsal surface of abdomen with median 

 segment distinctly specialized as in <S. morsei, sixth and eighth segments greatly 

 speciaUzed as in that species, supra-anal plate of similar character but some- 

 what more produced mesad with margin evenly convex, this portion not aa 

 strongly defined, as the emarginate angulation of the margins at the bases of 

 the cerci are weaker. Cerci slender, with twelve distinct joints. Subgenital 

 plate asj'mmetrical : dextral free margin weakly obhque produced and weakly 

 convex to mesal point, there the plate is suddenly produced in a smaU delicate 

 scute, shghtly broader than long with surface concave, this scute terminating 

 disto-dextrad in a small chitiuous thorn directed sinistrad, and terminated 

 disto-sinistrad in a longer process with aciculate chitinous apex directed dor- 

 sad, sinistral free margin weakly obhque produced nearly straight to base of 

 mesal scute. Limbs and armament of same as given in generic description. 



Allotypehy elimination. — 9 ; [Port Antonio,] Portland [Parish], 

 Jamaica. [Acad. Nat. Sci. Phila.] 



Characters of 9 . — Similar to type in ambisexual characters, differing in 

 the following features. In form not distinctly broader than male. Inter- 

 ocular width nearly equal to that between oceUi. Dorsal surface of abdo- 

 men unspeciaUzed. Supra-anal plate twice as broad as long, triangularly 

 produced with immediate apex angulato-emarginate. Subgenital plate con- 

 vex, brief, with free margin brieflj^ but decidedly convex proximad then 

 distinctly concave at base of cerci, thence weakly convex to mesal point, 

 which is shallowly angulato-emarginate. 



Measurements (in miXlimeters) 



cf ^ 



Jamaica, type 10 . 7 



Montego Baj% Ja- 

 maica (3) 10.7-11 



Palm Beach, Jamaica 11.5 

 9 



Port Antonio, Ja- 

 maica, allotype .... 10^" 



Little Cayman Island 11.4 



" The pale ocellar color is frequently obliterated in specimens when drjnng 

 and in consequence the ocellar spots appear obsolete in such examples. 

 *" Abdomen drawn up. 



