. Allan Hancock Pacific expeditions. Scientific expeditions. COMPLETE HAIG: EASTERN PACIFIC PORCELLANIDAE 65 tonio: Lund Univ. Chile Exped. (Haig). Tumbes: L. H. Plate (Lenz). Bahia de San Vicente: Lund Univ. Chile Exped. (Haig). Diagnosis: Carapace vi^ith a few large tubercles anteriorly, plicate posteriorly; no epibranchial spine; front strongly trilobate, lobes about equal in breadth, rounded at tips; carpus over twice as long as wide, proximal two-thirds of anterior margin produced into a strongly pro- jecting lobe, its edge cut into about eight uneven, serrate-edged teeth; merus of walkin
. Allan Hancock Pacific expeditions. Scientific expeditions. COMPLETE HAIG: EASTERN PACIFIC PORCELLANIDAE 65 tonio: Lund Univ. Chile Exped. (Haig). Tumbes: L. H. Plate (Lenz). Bahia de San Vicente: Lund Univ. Chile Exped. (Haig). Diagnosis: Carapace vi^ith a few large tubercles anteriorly, plicate posteriorly; no epibranchial spine; front strongly trilobate, lobes about equal in breadth, rounded at tips; carpus over twice as long as wide, proximal two-thirds of anterior margin produced into a strongly pro- jecting lobe, its edge cut into about eight uneven, serrate-edged teeth; merus of walking legs unarmed. Description: Carapace with a few large tubercles anteriorly, plicate posteriorly, finely pubescent. Front strongly trilobate, lobes about equal in breadth, narrow, rounded at tips, the median one more projecting, lateral ones diverging. Outer orbital angle produced into a strong, narrow tooth. No epibranchial Text-fig. 3. Basal segment of right antennule of 1, Petrolisthes tuberculatus, X 11; 2, P. tuberculosus, x 9. First movable segment of antenna with a strongly projecting, gran- ular lobe on anterior margin; second with scattered rough, projecting granules or small tubercles; third nearly smooth; flagellum naked or with vestigial hairs. Outer maxillipeds punctate or faintly rugose. Chelipeds granular, finely pubescent. Merus with a strongly pro- jecting pointed lobe on anterior margin. Carpus more than twice as long as wide; about the proximal two-thirds of anterior margin produced into a strongly projecting lamellar lobe, its edge cut into about eight uneven, serrate-edged teeth; surface with a longitudinal crest formed of large granules, flattened in adults and strongly projecting in young; a similar crest on posterior margin, ending distally in a large, strong tooth. Outer margin of manus thin-edged, with a fringe of hairs in young; surface with a longitudinal crest of large granules. Gape of fingers without a trace of Please note tha
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