ZOOLOGY OF FERNANDO NORONHA. 557 



It corresponds closely to the figure given by Humbert, excepting 

 that it is only 10 millim. in length instead of 22 millim., and 

 that the antennse are as hispid as those of I, solifuga, Halliday. 

 In Humbert's figure the antennge are quite glabrous, but as he 

 does not mention this among the difterences between his species 

 and I. solifuga, it is possibly an error of the dranghtsman. The 

 number of joints in the anteunse is almost equal to that of 

 I. Saitssurii, and more than that of /. solifuga ; but the animal 

 is but little larger than the type specimens of I. solifuga in the 

 British Museum. Another point of diflPerence, though very 

 slight, is in the forceps. In both the above quoted species there 

 is a secondary tooth on the inner edge of each chela, besides 

 several smaller rounded papillae ; now in the specimen from 

 Fernando Noronha this secondary tooth is nearer the apex 

 of the chela than is either of the others. 



Distrihution. The distribution of the whole genus is very little 

 known at present, as specimens are not often collected. I. soli- 

 fuga occurs in South Europe, Algeria, and Madeira (the var. 

 JVolIasto7i{). I. Saussurii was obtained iu Mexico at Orizaba. 

 Species are also recorded, but not described, from the United 

 States and Calcutta. 



Dr. Grassi, in p. 1 of " Progenitori degli Insetti e dei Miria- 

 podi," gives I. Saussurii as from Brazil ; but does not say whether 

 he has seen Brazilian specimens ; and in his list of species mentions 

 it merely from Mexico, evidently using " Brasili " as a synonym 

 for Mexico. It is more than probable that, if sought for, it will 

 be found to occur also on the mainland of Brazil. 



Lepisma Leai, n. sp. 



Though it was to be expected that house-inliabiting Lepismas 

 would occur liere, I sought for them in vain until just as we were 

 leaving, when a single large Lepisma^ perhaps disturbed by the 

 packing-operations, appeared. The specimen was somewhat 

 damaged in capturing it ; but as it seems to be undescribed, and 

 is a very curious animal, I describe it as it is. 



Corpus 19 millim. longum (setis exclusis), griseum. Caput 

 parvura, subrotundatum. Antennae filiformes (fractae). Oculi 

 minimi, nigri, pone basin antennarum positi. Prothorax 3 mm. 

 longus, margine superiore recto, iufcriore excavato, marginibus 

 lateralibus productls ; mesothorax et metathorax similes sed 

 breviores. Pedes coxis valde crassis, brevibus, oblongo-ovalibus, 



