SCUTATINA. 51 



Div. 1 -GYMlSrOCEHATA. 



Sub-Div. 1. — Geodromica. 



Section I.— SCUTATINA.'' 



Family L— CYDNIDJE. 



Genus 1. — Sehirus, Am. et Serv. 



Elliptic, more or less convex. 



Head short, 'o'idest just before the eyes: Face rounded in front, 

 concave tlirough the sides being recurved ; central lobe shorter than 

 the side lobes, which join and enclose it, but leaving a notch in 

 front. AntenncB : the tubercle generally near the eyes, the joints 

 after the 1st gradually thicher to the 4th ; the 2ud and 3rd vary 

 in relative length. Eyes small, rounded, projecting only a little 

 beyond the margins of the head. Ocelli small, distant. SonfruiJi 

 reaching to the middle or hinder coxse, base in a short channel ; 1st 

 and 4th joints shorter, 2nd and 3rd of about equal length. 



Thorax. — Fronotum transverse, subquadrangular, or subtrape- 

 zoidal, anterior angles much rounded ; anteriorly deflected, with the 

 margin very concave ; sides marginate ; hinder margin a little rounded, 

 more so at the posterior angles. Scutellum large, triangular, at its 

 base not so broad as the abdomen, and reaching beyond the inner 

 posterior angle of the corium, a little constricted just before the 

 rounded apex, which is suddenly deflected. Flijtra : Memhrane with 

 5 or G irregular, transparent nerves, which join together on the 

 disk, and form irregular cells. Sternum : — Prosternum with a more 

 or less deep rostral channel, and on each side a deep, transverse 

 channel ; Mesosfernuni with a slight, central keel. Let/s strong ; 

 hinder tibiae longest, all the tibicc with very strong spines placed in 

 rows ; tarsi, 2nd joint very small. 



Abdomen convex beneath ; Connexivum narrow. 



* Fao-e 11. 



