[539 1 INVKirrKP.KATi: ANIMALS OF VINEYARD SOl'M), F/I'C. '1 \ f> 



AKTICULATA. 



INSECTA. 



The insects included in the following catalogue have mostly been .de- 

 termined by A. S. Packard, jr., M. D., and by George H. Horn, M. D., 

 LO have also kindly furnished descriptions of the new species. Our 

 tanks are also due to Dr. H. A. Hagen, who has identified some of the 

 icies. The Pycnogonids have been determined by Mr. S. I. Smith. 



DIPTERA. 



iONOMUS HALOPIIILUS Packard, sp. nov. (p 415.) 

 Full-grown larvae were dredged in 10 fathoms in Vineyard Sound, 

 jveral miles from land, among compound Ascidiaus, (A. E. V.;) and 

 iveral young larvre were dredged in 8 to 10 fathoms in Wood's 

 [ole Passage, September 10, (A. S. P.) 



"This is a true Chironomus, the body being long and slender, with 

 usual respiratory filaments at the end of the body. Head red as 

 lal, chitinous; autenure slender, ending in two unequal spines; eyes 

 ?k, forming conspicuous dots ; mandibles acute, three-toothed. 

 Froai lower side of antepenultimate segment arise two pairs of long 

 leshy filaments, twice as long as the diameter of body, not containing 

 tracheae, so far as I can see; and from the end of penultimate segment a 

 dorsal minute tubercle, forming a cylindrical papilla, giving rise to eight 

 respiratory hairs about as long as the segment is thick; anal legs long 

 and slender, with a crown of about twelve spines. Two prothoracic 

 feet, as usual. In one larva the semi-pupa was forming ; length, ll mm , 

 (.45 inch.) 



This species belongs in the same section of the genus with Chirono- 

 musplumosus, figured by Keaurner, (vol. iv, PI. 14, figs. 11 and 12; and 

 vol. v.)' 7 A. S. P. 



CHIRONOMUS OCEANICUS Packard, (p. 331.) 



Proceedings of the Essex Institute, vol. vi, p. 42, figs. 1-4, 1869. 



Specimens apparently belonging to this species have been obtained 

 near New Haven, at low-water mark, among confervas It occurs at Sa- 

 lem. Massachusetts; Casco Bay; and the Bay of Fundy, from low- water 

 mark to 20 fathoms. 



CULEX, species undetermined, (p. 4G6.) 



A species of mosquito is excessively abundant on the salt-marshes in 

 autumn, and the larvae inhabit the brackish waters of the ditches and 

 pools. 



