112 Records of the Indian Museum. [Voi,. VI, 1911.] 



Fabatus servus, Dist. 



Female specimens were taken on the shore of Ross I., Anda- 

 mans, in March, 1911, by Mr. C. A. Paiva. The body in the adult 

 of this sex is somewhat elongate, the length being 5 mm. and the 

 maximum breadth about i"5 mm. The sides of the thorax are 

 straight and nearly parallel, except that the collar is much narrower 

 than the posterior part, the anterior angles of which are broadly 

 rounded. A deep mid-dorsal groove runs along the whole length 

 of the thorax. The coloration is very characteristic. The dorsal 

 surface of the head is leaden grey, edged with chocolate-brown 

 and with a pale line running parallel to the margin of each eye 

 posteriorly ; that of the pronotum is deep chocolate-brown, with a 

 large transverse oval spot of leaden grey on each side of the mid- 

 dorsal groove on the collar, a much larger and more elongate 

 longitudinal spot of the same colour on each side of the posterior 

 part and, posterior to this spot, a sinuous transverse bar of the 

 same colour running from near the lateral margin to near the mid- 

 dorsal groove a short distance in front of the insertion of each leg 

 of the 3rd pair. The dorsal surface of the legs and abdomen is 

 piceous, but the segments of the latter are edged with silvery grey 

 posteriorly. The ventral surface of the head, thorax and abdomen 

 is yellow, with a streak of leaden grey directed obliquely forwards 

 and inwards in front of the insertion of each leg of the 2nd pair. 

 The ventral surface of the limbs is dark, except that the base of 

 the femora of the anterior legs is tinged with yellow. The eyes, 

 antennae and rostrum are black. 



Only the wingless form of the following species has hitherto 

 been described : — 



Perittopus rufus, Dist. 



The apterous form of this species was originally described 

 from the Siamese Malay States and Tenasserim {Faun. Brit. Ind. 

 — Rhynchota, ii, p. 175, fig. 128). I found this form not uncom- 

 mon in March, 1908, on the surface of pools in jungle streamlets 

 flovv^ing down the western slopes of the Dawna Hills near Kawka- 

 reik in the interior of the Amherst district (Tenasserim) at alti- 

 tudes of from 2,000 to 3,000 feet, and Mr. C. G.Rogers, I.F.S., has 

 recently (Jan., 191 1) taken a winged specimen on a small tributary 

 of the Rangoon River, in Pegu. 



The winged form has a pronotum resembling that of Micro- 

 velia, the postero-lateral angles being subprominent and the po,s- 

 terior part extensive and produced to a point at the extremity. 

 The hemelytra reach the end of the body and are of an intense 

 black colour. The membrane, which is of relatively great extent, 

 is opaque and has a matt surface devoid of hairs, but the rest of 

 the hemelytron is translucent and minutely and sparsely pilose. 

 The veins are not prominent. 



N. Annandai^e. 



