ZOOLOGY, AND BOTANY, MICROSCOPY, ETC. 300 



his results are the following : — Larva, pupa, and imago have ten abdo- 

 minal segments ; the sex is recognisable in the half-grown larva ; each 

 larval segment bis two rows of setae, except the last, which has one ; the 

 absence of eyes in the larvae is confirmed ; the larva has eight ganglia, 

 the female pupa has seven \ the absence of a hypopharynx is confirmed ; 

 there is a nervous connection between the last abdominal ganglion and 

 the " sensory plate " ; in the imago there are nerve-cells beneath the 

 sensory plate ; in the ninth and tenth segments there is a tergite and 

 sternite ; the last (tenth) stigma lies on the tergite of the eighth abdo- 

 minal segment ; there is a glandular organ to the anal side of the bursa 

 copulatrix ; the ovarioles are "panoistic," i.e. without special nutritive- 

 cells ; the terminal thread and terminal chamber are continuous ; the 

 indifferent cells of the terminal chamber give rise to ova, follicle-cells, 

 and the elements of the membrana propria ; the follicles are quite 

 separated from one another by the membrana propria ; the ovum shows 

 at the two flattened poles the primordia of micropyle canals. 



The Pulicidas have few relations with Diptera ; they form a special 

 order between Diptera and Coleoptera. 



New Flightless Fly.*— Giinther Enderlein describes Thripomorpha 

 paludicola g. et sp. n., one specimen of which he obtained near Berlin 

 when collecting Thrips (Thysanoptera). As its name suggests, this new 

 flightless fly has an extraordinarily close likeness to Thrips. The shape 

 of the body seen from above and the size and movements of the animal 

 recall a large Thysanopteron. It is however, one of the Bibionidre, with 

 a quite wingless thorax. 



Mosquitoes of Para.f — Emilio A. Goeldi gives an account of his 

 investigations on the mosquitoes of Para, with especial reference to the 

 species Stegomyia fasciata and Culex fatigans and their hygienic 

 importance. He has also many interesting communications to make on 

 their mode of life, their food, and their reproduction. 



Social Wasps of Para-J — -A. Ducke gives a synoptic table of the 

 South American genera of Vespidaj, and a particular account of the 

 social wasps of Para, with ethological notes. 



5. Arachnida. 



Auditory and Olfactory Sense of Spiders.§ — Annie H. Pritchett has 

 experimented with the two species, Geolycosa texana Montg., and 

 Pardosa mercuricdis Montg., with the following results. No responses 

 were obtained to tuning-forks of various vibrations, nor to the crashing 

 sound of metal plates struck with a bar. From this she concludes that 

 these spiders probably do not hear at all. All parts of the body are 

 extremely sensitive to touch, and the spider responds immediately if it 

 or the cage comes in contact with the tuning-fork. Experiments with 

 individuals variously mutilated yielded the conclusion that the ability to 



* Zool. Jahrb., xxi. (1005) pp. 447-50 (1 pi. and 4 figs.), 

 t Boll. Mus. GceWi. ix. (1904) pp. 129-97. 

 % Tom. cit., pp. 317-74 (2 pis. and 4 lit^s.). 

 § Amer. Nat., xxxviii. (1904) pp. 859-67. 



