210 



ALBATROSS EXPLORATIONS, INSECTS HOWARD. 



A species which seems to live in great abundance on thrse islands is 

 the JEpeira cooksonii Butler; it is related to our domiciliorum, which 

 has undergone on the Pacific coast already a change in its form and col- 

 oratio:i,so that Dr. McJook has described it as new — Ep. vertebrate. 

 In Ep. cooksonii this change is increased, but still the relationship is 

 preserved by the structure of the epigynum. 



The following is a list of the material collected at the Galapagos 

 group: 



Charles Island — Continued. 



7. Filistata oceauea sp. uov. 



8. Heteropoda venatoria Lin. 

 Gasteracantha insulaua Tborell. 

 Epeira cooksonii Butler. 



d. Albemarle Island : 

 Epeira cooksonii Butler. 

 Heteropoda venatoria. 



e. Indefatigable Island : 



9. Meneiuerns galapagoensis sp. uov. 

 10. Latrodectus apicalis Butler. 



a. Cbatbain Island : 



1. Gasteracantha insulaua Tborell. 



2. Epeira cooksonii Butler. 



3. Segestria sequatoria sp. uov. 



b. James Island : 



Gasteracantha insulaua Tborell. 

 Epeira cooksonii Butler. 



c. Charles Island : 



4. Latrodectus scelio Tborell (Eat- 



ipo) (young). 



5. Agalena (immature). 



6. Loxosceles galapagoensis sp. uov. 



In the collection from Lower California we meet again with a majority 

 of well-known species, as our Epeira labyrinthea Hentz.; Gasteracantha 

 cancriformis , also found in the Southern States of the United States 

 and in California; Argiope argentata Fabr., frequently collected in 

 southern Florida, Texas, and California; Gasteracantha velitaris Koch, 

 the crab spider of the southern Atlantic States; Selenops aissa Walck., 

 found in Key West, Fla., and the West Indies ; Filistata hibernalis 

 Hentz., from Alabama. The two new species are Drassus pacificus and 

 Zora californica. 



a. Cerros Islands : 



1. Drassus pacificus sp. uov. 



2. Epeira labyrinthea Hentz. 



b. Balleuas Bay : 



3. Gasteracantha cancriformis Lin. 



4. Argiope argentata Fabr. 



St. Margarita Island: 

 5. Gasteracantha velitaris C. 

 (i. Seleuops a'issa Walck. 



7. Filistata hibernalis Hentz. 



8. Zora califoruica sp. uov. 

 Epeira labyrinthea. 

 Argiope argentata. 



Koch. 



The material from Clemente Island, California, comprises four species, 

 of which only one is new : 



1. Filistata capitata Hentz., a common form in tbe Southern States. 



2. Latrodectus mactans Walck., a species which bad been caught also 

 at the Straits of Magellan by the Albatross, and which is cosmopolitan. 



3. Argiope argentata, several times mentioned above, 



4. Lycosafallax, a new species. 



