INDEX, 



All names of orders, suborders, tribes, families, genera and species in the two systematic Latin parts 

 (pp. 78 — 113 and pp. 143 — 157) have been inserted alphabetically in the index. The number of the page on 

 which the diagnoses, characterization or description of each of these groups or species will be found has 

 been printed with dark numerals. 



As to the zoological names in the English parts it has been deemed expedient to adoiit a diflfercnt 

 mode of proceeding. A mere enumeration of names without any statement of the structure discussed on 

 each page registered would in most cases have been of but slight value. In the description or discussion of 

 structural features the name of the genus or species examined or mentioned is very often of little or no 

 importance as compared with the name of the family or suborder to which the genus belongs, the genera 

 or species examined being often casually chosen representatives of the family. If then the names of the 

 families and suborders found in these parts had been omitted the value of the index would have been 

 seriously lessened ; on the other hand, if all names of genera and species mentioned in the text and also 

 families and suborders shoidd have been inserted together with statement of structure in each case, the index 

 would have been disproportionately lengthy. Under the influence of these considerations we adopted the 

 following principle. In the treatment of the order Opiliones detailed registering has been added to the names 

 of the suborders, Cyphophthalmi, Laniatores and Palpatores; with the names of the families mention only 

 of very characteristic features has been made; the names of the genera and species have been omitted unless 

 any special reason necessitated their insertion. We hope that by this arrangement all requisite information 

 on the structure of a form mentioned will be readily found under the name of the suborder. In a similar 

 way information on a structural feature in the two genera constituting the order Ricinulei, viz. Cryptostemma 

 and Cn/ptocellus, is to be looked for under Cryptostemmatoidce. We have also inserted such names as Amblypygi, 

 Arachnida, Condylopoda, in order to refer to some discussions. Names of authors have been altogether omitted 

 from the alphabetical list. 



Amblypygi, muscular depressions on abdomen, 118 (foot- Caponiidte, respiratory organs, 133 



note); posterior abdominal segments, the "tail," 121, Condyhipoda, discussion of organs of excretion (Mal- 



142 pighian tubes, "coxal glands"), 49-51 



Anepignathi,'A\<ga\'a&A,\\w,i; establishment of the name, Cryptocellus We.stwood, history of the genus, 114; an- 



4; synonymoius with Clyjihophthalmi, 4, 86 tennse, 123; copulatory organs, 134; characterization 



Anthracomarti, the order proposed by Karsch, his diag- of the genus, 154; conspectus of species, 155. — As to 



nosis, 138; Haase's critical study, 139 all other points see Vryptosteinmatoida; 



Apagosterni, criticism of, 76 fmdus Westwood, description of, 155 



Arachnida, rnovability of coxjb in various orders of, 27; Simonis nobis, antenna;, 123, 124; description of, 



lyriform organs, 42 ; place of eyes, 45 ; organs of 156 



excretion (Malpighian tubes, "coxal glands") in various Cryptostenumi Guerin, history of the genus, 114; antenna;, 

 orders of, 49-51; relationships of orders, 120; two 123; copulatory organs, 134; comparison with Polio- 

 different tj-pes of respiratory organs, 132, 133; fossil chera, 141; characterization of the genus, 146; con- 

 forms, 138; difficult)' of study of fossil forms, 141 spectus of species, 147. — As to all other points see 



micrura, proposal of the name for a group of orders, Cryptostemmatoidce 



120; description of " tail," 142; diagnosis of the group J /^e/ji Thorell, granules on the skin, 115; descrip- 



and synopsis of its orders, 143 tion of, 150 



Aranece, posterior abdominal segments, the "tail," 121, crassipalpe nobis, graiuiles and hairs on the integu- 



142 ments, 115; description of, 147 



23—2 



