February 1S93.] 



PSYCHE. 



405 



2. The antennae of insects belong to the 

 rirst postoral segment and are entirely homol- 

 ogous with the remaining ventral extremities. 

 They do not correspond to the antennae of 

 Peripatus, but probably to the chelicerae of 

 spiders, and perhaps to the second pair of 

 antennae of Crustacea. 



3. Since the possibility that a number of 

 segments in the germinal streak of different 

 arthropods have disappeared is not excluded, 

 a homology of the mouth-parts of the different 

 classes of Arthropoda cannot at present be 

 set up. 



4. The abdominal appendages of the 

 insectan germinal streak (including the 

 cerci) are homologous with the thoracic legs. 

 Herein it makes no difference whether these 

 appendages are attached to the middle, at 

 the side, at the front, or hind margin (are 

 meso-, pleuro-, pro-, or opisthostatic, in the 

 terminology of Graber), provided only that 

 their cavity is immediately continuous with 

 that of the somite to which they belong. 

 The fact that the abdominal appendages 

 usually remain unsegmented in nowise tends 

 to show that they are not of the nature of 

 limbs, since, for instance, the mandibles also 

 are always unsegmented.* 



5. Many of the abdominal appendages of 

 larvae and perfect insects are homologous 

 with the thoracic legs, even when thev are 

 secondary in ontogeny. 



6. The primitive function of the first pair 

 of the abdominal appendages was ambulatory, 

 as also that of the remaining appendages. 

 The ancestors of the insects were therefore 

 undoubtedly homopod, not heteropod. 



7. The many-legged insect larvae are to 

 be derived from the six-legged just as little 

 as are, conversely, the hexapod iarvae from 

 the polypod ; both forms developed indepen- 

 dently of one another. 



8. The embryonic envelopes of the insects 

 probably correspond to the remains of a 

 trochosphere. 



* Whether the segmented branchial filaments of 

 Sisyra and Sialis belong to this category is doubtful, 

 but can only be decided by embryological investiga- 

 tions. 



Westwood and Stainton. 



The death on Jan. 2 of Prof. J. O. West- 

 wood of Oxford at the advanced age of 87 

 removes the most distinguished entomologist 

 of our time. For sixty-five years his contri- 

 butions to our science have been uninter- 

 rupted and have enriched and advanced every 

 branch of systematic entomology. No writer 

 has made known so many singular forms, 

 for which he seems to have had a remarkable 

 predeliction. He had a Latreillean eye for 

 structure and he depicted insects with rare 

 skill; of his published drawings there must 

 be many thousands, and they are of the ut- 

 most service to the systematist; yet his port- 

 folios are crowded with unpublished figures. 

 His Introduction to the classification of in- 

 sects, though half a century old, is a store- 

 house of fact and historical statement, ad- 

 mirably presented and still our best general 

 guide; but to do for the entomology of today 

 what he did for that of 1840 would require 

 treble the space he gave to it. No entomolo- 

 gist the world over has been held in such 

 reverent esteem by Americans as Westwood. 

 News comes from England of the death of 

 Mr. H. T. Stainton at the age of 70. His 

 studies of the Tineina are well known to all 

 American entomologists and he will be 

 remembered especially by them for his careful 

 collocation of the scattered papers of our own 

 Brackenridge Clemens on the subject. Stain- 

 ton did much to interest the young in entom- 

 ology and edited journals especially 

 intended for the tyro and collector. His 

 work on the Tineina was curiously published 

 in four different languages in parallel col- 

 umns. Most of us are glad to publish in one. 



Entomological Notes. — The firsl vol- 

 ume of Moore's gigantic undertaking upon 

 the Lepidoptera Indica is now completed 

 with the publication of Part 12. This fine 

 quarto volume, dedicated to the Empress of 

 India and begun in 1S90, contains 340 p 

 and 94 colored plates and yet deals with only 

 two subfamilies of Nymphalidae — the Eu- 

 ploeinae and Satyrinae. 



Early in 1891 Osten Sacken proposed a new 



