Vol. XXVl] ENTOMOLOGICAL NEWS. 253 



much information for this article, tells me that in 1882 he saw 

 a pair of humming birds, Riccordia ricordii ricordii (Gervais), 

 nesting in an unused chandelier in Gundlach's room at the 

 "Fermina" estate. The birds would fly in at the window, to 

 the table where Gundlach worked, taking bits of cotton and 

 tow to build their nest, such was his gentleness. 



Since 1866 Gundlach had been invited by the Jesuit priests 

 at San Juan, Porto Rico, to form a collection for their school 

 in that city, but his attendance at the Paris Exposition obliged 

 him to decline. He was again invited in 1870, this time by the 

 then German Vice-Consul at Mayagiiez, Herr Leopold Krug, 

 who shortly after left for Berlin, so Gundlach did not decide 

 to visit the Island till 1873, when, seeing that the revolution in 

 Cuba was not waning, he embarked at Havana on the 4th of 

 June of that year on the steamer "Manuela" for Mayagiiez, 

 where he got in contact with the amateur naturalists of the 

 Island, such as Dr. Domingo Bello Espinosa (botanist), of 

 Mayagiiez; Mr. Halmarson (ornithologist), of Arecibo, and, 

 on his second trip, with Dr. Agustin Stahl of Bayamon, well 

 known to all who have worked Porto Rico zoologically. It was 

 Dr. Bello Espinosa who, in 1871, first discovered that the genus 

 Eleutherodactylus (Hylodes) did not undergo all the trans- 

 formations usual with the frogs, and Gundlach, in 1881, made 

 further research on this same subject, sending his results to 

 Dr. Peters, of Berlin, who then described and figured eggs 

 and embryos of the Eleutherodactylus martinicensis (Tschu- 

 di). Gundlach remained in Porto Rico for six months, work- 

 ing over Aguadilla, Guanica, Lares, and LItuado in the interior, 

 as also Arecibo on the north coast and Ouebradillas, return- 

 ing to Havana, where he arrived on December 4th, 1873. 



His second Porto Rican trip was begun on the 4th of Sep- 

 tember, 1875, when he embarked on the steamer "Marsella." 

 His work on this occasion was for the most part about Vega 

 Baja, and Bayamon, where he was the guest of Dr. Stahl. Re- 

 turning, he arrived at Havana on the 25th of August, 1876, 

 making a third trip in 1881, remaining there for some time. 



Alternating with these trips he worked on the publication 

 of his writings on Cuba and Porto Rico. The former were 



