106 "ENDEAVOUR" SCIENTIFIC RESULTS. 



Subfamily ACTJEIN^E. 

 ACT^A INSKIPENSIS, up. 110V. 



(Plate xxi., figs. 1-3.) 



Type-locality. Off Point Inskip, Great Sandy Strait, 

 Queensland, 10 fathoms; E.3186; one young male, holotype. 



Measurements. Male holotype, length of carapace 5.1, 

 width of same 7.7, fronto-orbital width 4 mm. 



Description. Carapace, chelipeds and legs furnished 

 with scanty hairs which do not conceal the surface and are 

 scarcely to be noticed. Carapace covered everywhere 

 except on the cardiac and intestinal regions with fine, sub- 

 equal granules; well, but not deeply areolated; areolations 

 but not granulations visible to the unaided eye. Each 

 protogastric region is divided by a shallow, longitudinal 

 sulcus which fades out posteriorly, into two unequal parts, 

 the inner part half as wide as the outer; epigastric and 

 autero-exterual protogastric lobes swollen. In the language 

 of Dana, 3 lobes 1 L and 2 L are scarcely separate, 3 L and 

 4 L are well marked, 5 L shows a tendency to subdivide, 

 6 L is faintly outlined behind, 1 R, 2 R and 3 R are con- 

 tinuous. Of the marginal lobes, N, T and S are prominent 

 and somewhat angled, E is nearly flat. Postero-lateral 

 margin concave ; above the posterior margin there is a 

 narrow, raised, bilobed and crenulated ridge. Frontal 

 lobes in front view with sinuous margins separated by a 

 median fissure; at the outer ends an independent, 

 triangular tooth bent downward. 



Chelipeds of immature male small; carpus granulous 

 like the carapace, and with a few shallow furrows. 

 Granules of palm arranged largely in longitudinal rows 

 especially on the lower half of the outer surface ; immovable 

 fingers with two outer furrows, the lower one leading from 

 the palm and tapering to a point, the upper one reaching 

 only to middle of finger, a tooth on prehensile edge near 

 its base; dactylus with a deep groove below the upper 

 margin, a small tooth near the base of that margin, a large 

 basal tooth or tubercle on the prehensile margin and a 

 shallow tooth further out and distad to that on the 

 immovable finger. 



Legs granulous, except on the posterior surface of the 

 merus joints, the granules more pointed than on carapace. 



Dana Crust. U.S. Expl. Exped., parti., 1852, p. 29. 



