NO. 3 GARTH : SOME NEW SPECIES OF BRACHYURAN CRABS 65 



gestion of a third, found by Dr. Waldo L. Schmitt and 

 shown by a figure of the type. (See pi. 15, figs. 3 and 6.) 



(4) The middle of the three basal antennal spines is attenuated 

 and incurving instead of short and blunt. (See pi. 15, figs. 2 

 and 4.) 



(5) Both the infraorbital spines are as prominent as the outer an- 

 tennal. In sinensis one or both are reduced. (See pi. 15, figs. 

 2 and 4.) 



(6) The female chela is paved proximally with rounded granules 

 instead of being entirely smooth and bare. 



Genus MAGROGOELOMA Miers 



Macrocoeloma maccullochae, new species 



Plate 16, Figs. 1-4 



Type: Male, holotype. Cat. No. 372, Allan Hancock Foundation, 

 The University of Southern California, from Isabel Island, Mexico, 

 10-18 fathoms; April 2, 1937; collected by Allan Hancock Expedition 

 of 1937 at Velero Station 747-37. Two males, two females, and one 

 young, paratypes, same locality, 10-15 fathoms; March 8, 1938; col- 

 lected by Allan Hancock Expedition of 1938 at Velero Station 870-38. 



Measurements: Male holotype: length of carapace including ros- 

 tral spines 31.3 mm., branchial width including lateral spines 20.0 

 mm., excluding lateral spines 17.0 mm., width at level of preorbital 

 spines 10.6 mm., at level of hepatic region 9.9 mm., length of rostrum 

 9.2 mm., of cheliped 35.8 mm., of hand 15.2 mm. 



Diagnosis: Rostral horns cylindrical and contiguous almost to tips. 

 Postlateral spines acute, cylindrical, directed obliquely backward and 

 upward. Four tuberculate dorsal bosses arranged in a diamond. A boss 

 or tubercle anterior to the posterior median spine. Basal antennal spine 

 directed obliquely outward. Cheliped of male one and one-sixth times 

 length of carapace including rostrum. 



Description: Carapace distended, subpyriform, broadened anteri- 

 orly at the orbital level and covered with a dense, wooly pile inter- 

 spersed with longer, yellow, hooked hairs. Gastric, cardiac, and branchial 

 regions swollen, each surmounted by a large boss or tubercle, the four 

 forming a perfect diamond. Carapace constricted at the hepatic level; 

 two small epigastric tubercles. Two strong, cylindrical, acuminate post- 

 lateral spines, directed obliquely outward, backward, and upward, the 



