the New Hebrides, in the Pacific, and off the Canary Islands, in 

 the Atlantic Ocean. 



The annotated discussion of the species is presented with refer- 

 ence to their systematic classification. A list of the species ob- 

 tained in each archipelago, or other major locality is also given. 



Published records evidence a deplorable paucity of Indo- 

 Pacific Crustacea in the collections of American museums. Prof. 

 Dana's great collection was mostly destroyed, or badly injured 

 by drying and varnishing. Mr. Stimpson's invaluable types and 

 collections, given the Smithsonian Institute, are vanished or inac- 

 cessible. The great majority of the "Alva" Crustacea are not 

 represented in any other American museum. In addition to a 

 number of very rare specimens, hitherto known only from one 

 or two specimens in Asiatic or European museums, the "Alva" 

 collection has one new genus and eleven new species. The new 

 genus and species, Vanderbiltia rosamondae, from Tahiti, is re- 

 markably interesting, possessing most unusual specialization in 

 adaptation to its life in the coral crevices. Three new species 

 of the family Apheidae are described. Athanas gracilis Boone, 

 from Raiatea Island, adds another species to this small genus 

 of snapping shrimps with well developed eyes. Alphetis expLora- 

 tor Boone from Flores Strait, Dutch East Indies, depth 14U 

 fathoms, is closely related to the rare Alpheus makrosceles Al- 

 cock and Anderson, a nearly blind deep-sea species from the l^ay 

 of Bengal, but differs in having well developed ocular lobes. 

 Alpheus braschi Boone, from Samoa, belongs to the Macrochirus 

 group of reef-dwelling Alpheus. Two more new species of Alpheus 

 are included in the collection from Bali, but unfortunately are im- 

 perfect specimens. Leptochela pellucida Boone, from the Durian 

 Straits, adds another member to this primitive genus. Corallio- 

 caris tahitoei Boone, from Rariatea Island, is the seventh Indo- 

 Pacific member of this unique coral reef-dwelling genus; four 

 species of which are included in the "Alva" collection. Pontophilus 

 vanderbilti Boone, from Durian Straits, is one of the most ex- 

 quisitely sculptured species of this genus of beautiful Crangonids, 

 some species of which spend their lives in the sunlit tropic 

 shallows, their fragile translucent bodies as evanescent as the 

 shadow of a ripple, while others have their being in the icy 

 darkness over two thousand fathoms down. Euphausia alvae 

 Boone, from Flores Straits, and E. consuelae Boone, from off 

 the New Hebrides, are each new deep-sea species, founded 

 upon an extensive type series. Stylocheiron longicorne G. 0. Sars 



