192 CARNEGIE INSTITUTION OF WASHINGTON. 



It is intended that the collection, which I have both pinned and in alcohol, 

 shall be further worked out with a view to determining how many species 

 are able to pass by wing from the mainland to the Dry Tortugas; how many, 

 like Aplopus mayeri, are new, and how many appear to have been introduced. 

 In the latter regard, it is interesting to note the following possibilities: 

 Schooner loads of soil taken to Loggerhead Key from New Jersey, between 

 1909 and 1912, undoubtedly contained the eggs of some of the Orthoptera 

 and possibly of other orders. Stores brought to the island certainly carry 

 several species of Diptera. Probably many insects are carried on the boats 

 themselves. One cerambycid beetle was discovered on the awning of the 

 yacht Anton Dohrn. 



Since East Key, a small island on the northeast, is the most isolated of 

 the group. Dr. Mayer kindly made it possible, on July 18, for me to spend a 

 day there in order to determine how the insect fauna compared with that on 

 Loggerhead Key. It was his belief that on East Key would be found onl}' the 

 species which came by their own locomotion. As a matter of fact, however, 

 three cages of rats had been landed on the island in June; in the straw which 

 the cages contained I found a single cockroach and several crickets and 

 beetles. Whether the latter two were introduced in the boxes or had entered 

 after their arrival I can not say. I saw several of the crickets in other parts 

 of the island, but none of the Coleoptera and no roaches. A fairly thorough 

 search of East Key yielded 33 species, as follows: Odonata, 1; Orthoptera, 4; 

 Hemiptera, 9; Lepidoptera, 1; Coleoptera, 5; Diptera, 8; Hymenoptera, 5. 



Of these, 2 Coleoptera and 1 species each of Orthoptera and Diptera were 

 not taken on Loggerhead Key. 



Birds Observed on the Florida Keys from April 20 to April 30, 1914, 



by Paul Bartsch. 



Last year a list of the birds observed, between April 25 and May 9, on the 

 various keys between Miami and the Tortugas was published in the annual 

 report of the Department of Marine Biology, pp. 172-175. Since these have 

 proved of interest to ornithologists, and especially to students of bird migra- 

 tion, it was deemed wise to continue these observations this year, and I there- 

 fore offer the following journal extracts upon the subject. Our cruise this 

 year was of shorter duration and somewhat earlier than that of last year, 

 which gave the avifauna of these keys quite a different aspect from that observed 

 then. Only 46 species were noted, while last 3'ear the total reached 57; but 

 19 of the 46 are additions to last year's list, which raised the whole so far 

 observed in this region to 76. 



April 20. — While walking about Miami, at ^^ 30'" p. m., the following were 

 observed: Black-poll warbler, black-throated blue warbler, redstart, mocking 

 bird, Florida cardinal, night hawk, turkej^ buzzard. Many of the warblers 

 were too high in the trees to be positively determined without a glass. No 

 doubt a much larger list of these might have been secured with the aid of a 

 glass. 



April 21. — Left our anchorage at 6 a. m., steaming down the channel 

 between Miami and Cape Florida. Birds did not seem nearly as abundant as 

 thej'' were a year ago. We saw only a single yellow-palm warbler, 2 cormorants, 

 and 3 royal terns flying about. Last year all the stakes marking the channel 

 were occupied by roj'^al terns. Rounding Cape Florida and going down 

 Hawk Channel, we observed many flocks of small birds, all coming from the 

 south and flying due north toward the small keys. The sky was heavily over- 



