THE EARWIGS OF CEYLON. 77 



is certainly very variable. The specimens which I have seen approach 

 nearer to PI. ge^troi, Dubr., except in size, I cannot regard them as distinct 

 from Ph tJioracica. 



ECHINOSOMA, Dohrn. 



Small, convex, pubescent. Antennse with nearly thirty segments, of which 

 the first and third are of equal length, and the remainder very short, scarcely 

 longer than broad. Pronotiim barely as broad as the head. Elytra twice as 

 long as the pronotum. Wings well developed. Abdomen short and broad, 

 broadest in the middle. Forceps short, simple and incurved, almost semi- 

 circular ; in the $ straight, or gently incurved in the $ . Feet short, not very 

 slender. 



EcJiinosoma, Dohrn., 1863, Stett. Ent, Zeit., xxiv., 63, 

 Borm. 1900. Forf. 26. 



This genus may be recognised by the small, rounded, fully-winged, hairy 

 insects. 



ECEINOSOMA PARVULUM, Dohrn. 



Dark ; the mouth parts, segments 2 and 16 of the antennse, and wings 

 sternum and feet pale ; the wings have a dark spot at the apex, and the 

 femora and tibiae are dark at the base. The body is covered with yellow- 

 ish pubescens. The head has the occipital suture very distinct and is 

 blackish-brown in colour ; the antennae are dark with the exception of the 

 second and sixteenth segments which are pale ; pronotum dark with a pale 

 central line and pale sides. The elytra are about twice as long, and are 

 thickly granulated. Abdomen granulated and warty, dark-brown with 

 indistinct reddish-brown specks. 



Length of the body 7 mm. 

 „ „ forceps 1 mm. 9 . 



Echinosoma parvulum , Dohrn, 1863, Stett. Ent, Zeit., xxiv., 66. 

 Borm. 1900. Forf. 29, 



This is the smallest species of the genus, and the only one known to occur 

 in Ceylon ; I know of no specimen other than the type of Dohrn in the 

 Berlin Museum except one in the B. M. The male is unknown. 



PSALIS, Serv. 



Body stout, antennse less than half the length of the body, with less than 

 twenty segments, the first segment as long as segments 4-5-6 inclusive. 

 Elytra and wings well developed. First tarsal segment equal to the other 

 two. Abdominal tubercles absent. Forceps simple, somewhat stout arcuate 

 remote at the base in the $ ; in the $ stout, conical, subcontiguous 

 incurved at the tip. 



Psalis, (part) Serv., 189, Orh., 1831, Ann. Sex. Nat., xxii., 34. 

 Borm. 1900. Forf. 36. 



This genus approaches more nearly to Lalidura. It may be distinguished 

 by its shorter antennse and shorter, simpler $ forceps. 



