186 BLIND VERTEBRATES AND THEIR EYES. 



Aside from obtaining young it was planned to build cages in a well-lighted cave 

 in which the adult would be compelled to carry and give birth to their young in the 

 light. The body walls in the majority of individuals would offer little or no obstacle 

 to the penetration of light to the embryos. 



Dr. J. W. Beede, of the Geological Department of Indiana University, acted as 

 volunteer assistant and rendered very valuable aid in collecting fishes, making the 

 cages, and taking the traverse to the various caves in the chief cave region about 

 Cahas. Only a single individual with young was obtained and one other with nearly 

 mature eggs. Two cages were built and fishes were confined in them and the cages 

 sunk in the Modesta, a well-lighted cave in which fishes were naturally abundant. 



On December i a few fishes were collected and sent me by Mr. F. Martinez, of 

 Cafias. Although these promised little better success than the ones collected in 

 October and early November, I started for Cuba again on December 18, 1903, 

 accompanied on this trip by Mr. John Haseman, as volunteer assistant. It was 

 again found that this was not the breeding season, as no fishes with young were 

 found at all. The cages were found intact and received a new supply of fishes. 



On May 1 a number of fishes were sent me by Mr. F. Martinez, and as these 

 promised no young the trip planned for May was abandoned. On June 1, when 

 Mr. Martinez was again to send me samples, he was unable to obtain any fishes on 

 account of high water. 



Between June and August I could not get away from my routine work, but this 

 period was later covered by Mr. Haseman. On August 15, 1904, I started again 

 for Cuba, accompanied by Mr. Hankinson as volunteer assistant. I returned Sep- 

 tember 7. On this trip, which was more extensive than the former, I obtained two 

 females with young, one a Lucifuga containing 10 young, and one a Stygicola con- 

 taining 1 young. On this occasion I visited two new localities. At one of these, 

 Jovellanos, from which Poey reported Stygicola, I obtained nothing. At the other, 

 the Carboneria farm, on the north coast near Matanzas, I obtained my first speci- 

 mens from the northern slope of Cuba. I am under many obligations to Dr. Felix 

 Garcia, the harbor health officer of Matanzas for the opportunity to visit the 

 Carboneria. 



At this time the cages in the Modesta were found to be entirely spoiled, the wire 

 screening having corroded in large pieces. I succeeded in bringing living fishes to 

 Indiana, but it was not possible to bring large numbers. There was great mor- 

 tality en route on account of the extreme sensitiveness to cool water, which rules 

 entirely out of court the idea of colonizing them in some of our northern caves. 



In June, 1905, two of my students, Mr. J. Haseman, who had accompanied me 

 on one of the trips, and Mr. Norman Mclndoo, made another tour of the caves, 

 but with no better success as far as embryos were concerned. They secured but 

 one female with young. 



The following papers have appeared on material gathered during the various 

 Cuban trips : 



1. The Blind Fish of Cuba. Science, N. S., xvi, p. 347. 



2. Eigenmann, C. H. The fresh-water fishes of western Cuba. Bull. U. S. Comm. Fish and Fisheries, 



1902, pp. 211-236, plates 10-21. 



3. The water supply of Havana. Science, N. S., xvm, pp. 281-282. Aug. 28, 1903. 



4. In search of Blind Fish in Cuba. World To-day, v, pp. 1129-1136. 



5. Auf der Suche nach blinden Fischen in Cuba. Die Umschau, vn, pp. 365-367. 



6. Hay, W. P. On a small collection of crustaceans from the island of Cuba. Proc. U. S. Nat. Mus., XXVI, 



pp. 429-435. Feb. 2, 1903. 



7. Lane, H. H. The ovarian structures of the viviparous blind fishes, Lucifuga and Stygicola. Biological 



Bulletin, VI, pp. 38-54, 1903. 



