270 Dr. E. P. Wright 07i the Dragonflies 



data, medio depressiuscula et rimula subtili (ssepe subra- 

 diante) fissa, intus cinerascentia ; sporse 8"*, incolores (de- 

 mum fuscescentes vel fuscas), ellipsoidese, simplices, longit. 

 0-018-0-025 millim., crassit. 0-01 1-0-016 millim. ; para- 

 physes gracilescentes, irregulares et ssepe ramosaj ; peri- 

 thecium (peridium) etiam supra nigrum, infra (hypotliecium) 

 fusco-nigricans. lodo gelatina liymenialis fulvo-rubens 

 (praicedente cajrulescentia levi). 



Supra saxa granitosa in Gallia, Haute Viemie (Ripart, 1865), 

 socia Lecanorce gihhosce. Etiam supra saxa calcarea in Scotia, 

 Braemar (Crombie). 



Genus peculiare novum, Mycojxjro quodam modo affine, sed 

 apotheciis supra demum rimula subradiosa vel simpliciore de- 

 liiscentibus. Inter Pyrenocarpeos hie Lichen locum obtinere 

 non potest, nam nullum habet ostiolum punctiforme. Cetero- 

 quin Mycojyorum et Rhnularia apothecii typum offerunt pro- 

 prium, qui nee apothecium discocarpum nee pyrenocarpum 

 sistit ; ab illo scilicet differt perithecio supra continuato totum- 

 que hymenium involvente ; ab hoc (pyrenio) differt ostiolo 

 non regulari contractoque nee anaphysibus intus munito, sed 

 rimula vel varie dehiscente. Adest hie per^c?m??^, fere sicut in 

 Fungis variis. Distinguenda est duobus generibus allatis, 

 tribus propria, quae dicatur Peridiei. 



XXXVI. — Notes on the Dragonjlies of the Seychelles. By E. 

 Perceval Weight, M.D., F.L.S., Professor of Botany and 

 Zoology in Trinity College, Dublin. With a List of the 

 Species and Descrij)tions of a new Genus and some new Sjpe- 

 cies ; by the Baron E. de Selys-Longchamps. 



DuEiNG my six months' residence at the Seychelles I was 

 very much struck by the apparent absence of insect-life. 

 Ants and musquitoes, indeed, abounded : the former were busy 

 everywhere, and nothing that could be carried oif was left 

 very long alone by them ; the latter were a constant source of 

 discomfort. To all appearance they contrived to live happily 

 while often rendering human life miserable. But there were 

 no butterflies to be seen flying by day ; and the cocoanut-oil 

 lamps were let burn uninterruptedly by night, there being no 

 big moths to flap over and extinguish them. This was espe- 

 cially the case during the months from June to September. 

 Towards October insects began to appear, the Cicadse were 

 heard in the trees, and I have little doubt that if I had stayed 

 at the islands for the whole of the rainy season I should 

 have collected or seen a fair proportion of species. A large 



