INDEX 459 



PAGE 



Lakhmina linguloides, compared with Neoholus zvarthi 73 



lamborni, see Obolus. 



Lancaster, Pennsylvania, fossils from 304, 310, 340 



Langston formation, correlated 171 



defined ° 



Blacksmith Fork, section of 198-199 



House Range, section of 183, pi. 17 



Idaho, fossils in 56, 82 



L'Anse au Loup, fossils from 266, 310, 335 



Lapworth, Chas., bibUographic references 374. 375 



lapworthi, see Olenellus. 

 lapworthi elongatus, see Olenellus. 



Lateral areas, defined I57 



lateralis, see Syntrophia. 

 leda, see Obolus tetonensis. 



Leon, Spain, fossils from 78 



lepis, see Lingulella. 



Leperditia, stratigraphic position and association 183. 197, 211 



Leptembolon, see Lingulella (Leptembolon). 



Lesley, J. P.. bibliographic reference 375 



species named after no 



Icsleyi, see Huenella. 



Levis shales, Quebec, fossils in ; 85 



levis, see Zacanthoides. 

 levisensis, see Acrothele. 



Lewis and Clark Forest Reserve, Montana, fossils in 80, loi 



Liberty, Idaho, relative position and thickness of Cambrian formations 



near 6 



Liberty Canyon section, fossils from 26, 30 



liliana, see Crepicephalus. 



Limulus, Agassiz on the habits of the young of 241 



eye of compared with that of Apus 239 



Olenellus 327 



Olenellus gilberti 239 



trilobites 239 



habits of 241 



telson of compared with that of Olenellus 246, 312 



Limulus Polyphemus, eyes of compared with those of Olenellus gilberti. . . 327 



Lindstrom, Dr. G., bibliographic reference 375 



on the types of eyes in trilobites 239-240 



visual organs on the hypostomas of trilobites 240 



lindstromi, see Obolella and Trimerella. 

 linearis, see Scolithus. 



Lingula, evolution of pi. 11 (pp. 140-141) 



nature of shell substance 150 



shell compared with that of Obolus I49 



Lingula aciuiiinata Hall, mentioned 72 



Lingula (Glossina) acuminata Hall and Clarke, in synonymy 72 



