INTRODUCTION. 
Ins. 3 
INTRODUCTION. 
The number of titles for this year — 1710 — is the largest yet recorded, 
being about 200 more than last year. A considerable number of memoirs 
are placed in the subject indexes without being mentioned in the list of 
titles, so that the total number of memoirs is about 2,000. This is not 
all ; there are very numerous brief notes that have had to be considered, 
many of them being also placed in the subject indexes. The annual crop 
of entomological literature steadily increases. 
The new classification of existing Insects proposed by Handlirsch 
(668) includes 34 Orders, arranged in 4 Classes, one of which consists of 
eleven sub-classes. 
A considerable number of important works have been published during 
the year. The monograph of Sphingidce by Rothschild & Jordan (1291) 
is probably the best monograph of a large family of Lepidoptera that has 
yet been produced. 
Theobald has given its a supplementary volume on mosquitoes, and 
Hampson the first part of Noctuidce in the Catalogue of Moths (662). 
Two or three volumes on British entomology have been published, 
Newstead having completed his work on Coccidce (1063), Barrett the 
Pyralid volume of British Lepidoptera (77), arid Morley (1033) a first 
volume on the IchneurAonidce. 
The less attractive groups of Insects have received much attention ; 
the Record of parasitic Hymenoptera is of considerable extent, and the 
Aphaniptera occupy a larger space than has ever been required before this. 
The Volume (527) on the Fauna of Sokotra must be noticed, though 
the duration of tne expedition was so short, and its field so wide that we 
may feel sure that only a small part of the entomology has been acquired. 
The Coleoptera Carciboidea of the Hawaiian Fauna, amounting to 
fully 200 species, has been dealt with, Sharp (1403). Mr. Elwes’ 
account (447) of the butterflies of Chili is of great interest to the general 
entomologist, and will no doubt lead to many reflections on our small 
acquaintance with the entomology of the Andean region of S. America. 
Apfelbeck has published the first volume of a Coleopterous fauna of the 
Balkan and East Mediterranean areas (30). It appears to be well 
executed, and presents one valuable and novel feature, inasmuch as 
pp. 401-405, contain a complete systematic summary of the hew matter 
included in the volume. 
Lepidopterists are fortunate in the popular works they obtain at a low 
price — in America. A conspicuous example of this is Dr Holland’s 
moth book (712), in which entomologists have a work at an extraordinarily 
low price that will enable them to determine nearly all the N. American 
Macro - lepidoptera , Hetcrocera. It is a companion Volume to the butterfly 
book by the same author we noticed in 1899. 
Other important faunistic works are MelicIiar (1000) on Ceylon 
Homoptcra , and Distant (393) Fauna of British India, Rhynchota. 
Austen’s monograph of Tsetse flies is remarkable for the excellence of its 
illustrations (55). 
In Morphology Verhoeff has discussed the external structure, with 
the exception of that of the head, in a series of memoirs (1594 to 1599). 
Meek (990) gives a good paper on the Kansas trophi of Cicada , and Zander 
(1705) one oti the male genital structures of Lepidoptera. Biedermann 
(126) makes a contribution to our knowledge of the histology of the chiti- 
nous skeleton in Coleoptera. NuttAll & Shipley (1081) give an important 
