172 G. W. KIKKALDY, l'TlI.OCKl! liS OCHRACEUS MONTANDO^^ 



colour is brownish-yellow, the membrane rather browner, 

 without pale spots, and the veins are very narrowly margined 

 with blackish-brown (fig. 1). 



Montandon has not noted the form of the pronotum in the 

 various species ; in ocliraceiis, this is more pilose than in P. 

 f asms (judging by Westwood's figure), and the foliaceous ele- 

 vation posteriorly is much more prominent toward the middle 

 and covers a much larger space i). 



The trichome lo which Mr. Jacobson has drawn attention, 

 has not been described previously. 



On examining the ventral surface of the bug (fig. 2 and 3), 

 it is seen that the second segment (the apparent first) is 

 at first very much depressed, and that a little apical of the 

 middle there is a raised margin all round, Avhich gives the 

 impression of a fresh segment ; in profile (fig, 4) a large part 

 of the segment is vertical. In the depression just basal of the 

 raised margin is placed the trichome (a in fig. 3 and 4), a 

 tuft of flame-coloured hairs, which is very conspicuous as the 

 surrounding hairs are either pale tawny or blackish-brown. 



This tuft conceals an opening leading to a large special 

 gland which is situated ventrally and is quite different from 

 the usual odoriferous gland of the Het'îroptera. 



It is remarkable that the many Hemipterists who have 

 examined the Holoptilinae have never noticed this trichome, 

 as it is quite conspicuous in dried examples ; my collection 

 of these Hemiptera is very small, but in Ptilocnemidla lemur 

 also, I found a trichome, a little different though not much, 



•) It is surely in error that Montandon synoiiymises Maotijs fuscus Gray 

 (Aniyot «& Servillo, 1843 Hém., PI. 6. f. 4; with Gray's species. P. fuscus has 

 m:iny white spots on the membrane, while the latter is immaculate in Amyot's 

 specie?, except that there are two lateral black spots. The tufts on the hind 

 legs do not extend to near the apex in tlie latter, at-d the form ot the pronotum 

 is different. P. fuscus (Amyot & Servillc) clearly represents a species of Mon- 

 taiidon's divisions AA & K, diflering iVom the true ƒust•Ms as above. I propose 

 l'or it tlir' naiiiL' sundnuus. It is likely tliat Amyot's tyj)c is in the Paris Museum . 



