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AMCS Bulletin 5 ReprintTWO NEW AMERICAN SPECIES OF SPELAEOMYSIS (CRUSTACEA: MYSIDACEA)FROM A MEXICAN CAVE AND LAND CRAB BURROWSThomas E, BowmanDivision of Crustacea, Smithsonian InstitutionFive species of mysids belonging to the familyLepidomysidae are known from underground habitatsin Zanzibar (Fage, 1925), Italy (Caroli, 1924),India (Pillai and Mariamma, 1964), Mexico (Villalobos,1951), and Cuba (Bacescu and Orghidan, 1971).All are blind, except the Zanzibar species, which, likeone of the new American species described below, hasa few ommatidia situated at the distolateral corner ofthe eyestalk. The 2 new species described below bringthe known forms to 7, 4 of which inhabit Central andSouth America.FAMILY LEPIDOMYSIDAE CLARKELepidophthalmidae Fage, 1924Lepidopidae Stammer, 1936Lepidopsidae Villalobos, 1951Lepidomysidae Clarke, 1961Type-genus-Lepidomysis Clarke, 1961.Genus Spelaeomysis Caroli, 1924Lepidophthalmus Fage, 1924 [Type-species, by monotypy,Lepidophthalmus servatus Fage. Preoccupiedby Lepidophthalmus Holmes, 1904, Callianassidael.Spelaeomysis Caroli, 1924.Lepidops Zimmer, 1927 [Replacement name forLepidophthalmus,' preoccupied by Lepidops Miers,1878, Albuneidael.Typhlolepidomysis Villalobos, 1951. [Type-species,by monotypy, Typhlolepidomysis quinterensisVillalobosl .Lepidomysis Clarke, 1961 [Replacement name forLepidops] .Keralomysis Pillai and Mariamma, 1963. [Typespecies,by monotypy, Keralomysis longipes Pillaiand Mariamma] .Type-species, by monotypy-Spelaeomysis bottazziiCaroli,1924.Diagnosis (modified from Gordon, 1960, and Pillaiand Mariamma, 1964)-Body somewhat depressed.Carapace relatively long; anterolateral lobes rounded,reaching beyond rostrum; posterolateral lobes reachingpereonite 7 or beyond; cervical groove absent.Pereonites 6 and 7 exposed dorsally; pleonite 6 produceddorsally into rounded triangular flap extendinganteriorly to overlap concave posterior margin ofcarapace. Pleon relatively long; pleonite 6 slightlylonger than pleonite 5. Telson subtriangular or linguiform,spinose on distal half or on entire margin. Eyestalkstruncate, without visual elements or with afew ommatidia on distolateral corner. Antenna 1,2nd segment of peduncle not shortened. Antennalscale with rounded apex, margin setose. Mandiblewith well developed incisor and molar; 2nd and 3rdsegments of palp each with row of strong spines.First maxilla with 2-merous reflexed palp ending inlong seta. Maxilliped quite setose; penultimate segmentof endopod with broad medial lobe; exopod anunsegmented oval plate; epipod rather long and narrow.Pereopod 1 with exopod longer than endopod;endopod prehensile. Pereopods 2-7 with slender ambulatoryendopods; penultimate segments of endopodsnot subdivided; pereopod 7 of male with internal13