558 



MR. F. K. RIDLEY ON" THE 



subtus duabus setis loiigis ; articulis secundis longioribus multo 

 tenuioribus pubesceutibus, supra spina crassa armatis ; tertiis 

 tenuioribus, sequilongis, subtus setiferis ; tarsis multo brevioribus 

 setiferis, uncis parvis duobus termiiialis. Inter coxas tres 

 squamae, ovales, obtusae, quam coxas minores. Abdominis 

 segmenta subaequalia, glabra. Segmentum ultimum breve. In 

 medio penultimi segment! appendices duae breves, complanatas, 

 acutae ; post eas duae laterales, breves, teretes, bispidae, tunc 

 duae longae multo longiores et tenues hispidae, tunc duae longae 

 graciles hispidae, et in medio appendix longissima unica, crassior, 

 setosa, articulata et annulata. 



The abdomen was filled with some bright green substance, 

 which was emitted from the mouth when touched — apparently 

 green paint nibbled off the shutters. 



The most nearly allied species to this which I have seen was 

 obtained in Socotra, and is now in the British Museum. The 

 breadth of tlie thorax is greater than in L. saccharina, but the 

 head is not concealed as in some species. 



Leptsma corticola, n. sp. 



Parva, 1 cm. longa, angusta, metallica plumbea, dorso arcuato 

 nec complanato. Caput parvum, rotundatum ; oculi ad basin an- 

 tennarum, rubri. Antennae graciles, annulatae, hispidae; articulus 

 basalis maximus, reliqui breves, plurimi, crassiusculi. Palpi 

 maxillares 5-articulati, articulis breviusculis. Palpi labiales 

 breves, clavati ; articulus basalis brevis sectus, secundus longior, 

 tertius brevissimus conicus, quartus rotundatus brevis. Thorax 

 angustus, quam abdomen vix latior. Prothorax quam meso- 

 thorax longior, metathorax brevior, marginibus omnium ciliis 

 rigidis munitis. Pedes longiusculi, hispidi ; coxae breves, latae 

 nec crassae ; secundo paullo angustior et brevior; tarsi longius- 

 culi, triunguiculati ; squama inter coxas prothoracis ovata acuta 

 magna, alterae minores. Abdomen breviusculum ; appendices 

 segmenti ultirai graciles, hispidae, breviu-culae, subaequales. 



In rotten wood and under stones in the Sapate and the' base 

 of the Peak. It also occurred on the mainland at Pernambuco 

 in similar localities. 



The chief peculiarity of this Le^isma is its very rounded back, 

 resembling that of a Machilis rather than that of a typical 

 JLejpisma. It is a small active species occurring singly, of a dark 

 leaden-grey colour. Tlie scales resemble those o£ L, saccJiarina 

 in outline, but are more notched at the upper edge, and seem 



