246 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [540] 



MUSCIDJE. Larvae of an undetermined fly. (p. 415.) 



This larva was found living beneath the surface of the sand, at low- 

 water mark, on the shore of Great Egg Harbor, at Beesley's Point, New 

 Jersey, April 28, 1871. (A. E. V.) The same larva, or an allied spe- 

 cies, was found May 5, under stones below high- water mark. " Specimens 

 were brought to me from New Jersey, and kept living in sea-water for 

 some time. The following description is from the living specimens : 

 Body white, long, slender, cylindrical, tapering gradually from the pen til- 

 penultimate segment toward the head ; thirteen segments, counting the 

 head as one. Segments smooth, thickened at the hinder edge, the su- 

 tures being distinct; tegument very thin and transparent, allowing the 

 viscera to be easily distinguished. The terminal segment of the body is 

 conical; seen from beneath it is nearly a fourth longer than broad, the 

 end subacute and deeply cleft by a furrow which diminishes in size and 

 depth to beyond the middle of the segment, where it fades out. This 

 conical extension is flattened vertically above ; from the middle of the 

 same ring project the supra-anal, conical, fleshy tubercles, one-fourth the 

 length of the entire ring, which give rise to two main trachea3 running 

 to the head, and which separate and close together at the will of the 

 animal. When extended the prothoracic ring is considerably longer 

 than the others. Head one-third as large as prothorax, and a little 

 more than half as wide. Length, 9 Ilim . 



I cannot detect any spiracles on either of the thoracic rings. The 

 trachea are not nearly so regular as in the larva? of the Anthomyia ce- 

 parum, with living specimens of which I placed it side by side ; head 

 much the same, showing it may be of this family. Minute antennae 

 present ; no traces of them in Anthomyia, and their presence throws 

 a doubt whether it be a muscid." A. S. P. 



ERISTALIS, species undetermined. 



One large-sized larva was found in Vineyard Sound among alga3 in 

 April, by Mr. Yiual N. Edwards. 



EPHYDRA, species undetermined, (p. 4GG.) 



Packard, Proceedings Essex Institute, vol. vi, p. 50. 



Shores of Narragansett Bay, pupariuin found under sea- weeds by 

 Dr. T. d'Orexrnieul. According to Dr. Packard, " scarcely distinguish- 

 able from E. halophila Packard, which lives in salt brine at the salt- 

 works in Gallatin County, Illinois." 



COLEOPTERA.* 



A number of species of tiger-beetles (Cicindela) are common on the 

 sandy shores and beaches just above high- water mark, and some of 

 them are seldom found away from the sea-shore, while others are also 

 found far inland. The larvaB of some of these, and perhaps of all, live 

 below high, water, but this has not yet been observed in the case of several 



* The Coleoptera were mostly determined by Dr. George H. Horn. 



