184 University of California Publications in Zoology [Vol. 23 



Genus Homola Leach, Aleoek 



Carapace deep, longer than broad, more or less quadrilateral, or urn-shaped, 

 with deep vertical sides; gastric region well demarcated and occupying the 

 anterior half of the carapace; hepatic region well developed, hepatic (or antero- 

 lateral) spine some distance behind the level of the supra-orbital spine; linea 

 anomurica distinct and dorsal; front narrow, forming a rostrum, which is either 

 entire or bifid, and has a spine, often of large size, on either side of its base. 

 Propodus of last pair of legs dilated near basal end and never twice the length 

 of the dactyl. 



Homola faxoni sp. no v. 



Plate 31, figure 7 



Description. — Carapace more or less quadrilateral, exclusive of rostral spine, 

 a little longer than broad, greatest width at about posterior fourth of carapace ; 

 entire surface more or less' obscured by a rather thick, short pubescence. 



The supraorbital spines, one on either side of the base of the rostrum, are 

 quite stout, surpassing the rostrum both in size and length, and each on its upper 

 or posterior margin is provided with two small, hooked spines. Behind and a 

 little closer together than the supraorbital spines there are two much less promi- 

 nent ones on the anterior part of the gastric region. External to each of these 

 there is a spine of like size, about in line with the tubercle on the apex of the 

 gastric convexity and the superior hepatic spine at the anterolateral angle of the 

 carapace ; a tubercle also between the median gastric tubercle and the outermost of 

 the anterior gastric spines, one on each side. The hepatic region is well developed 

 and below the stout spine at anterolateral angle of the carapace there is a smaller, 

 inferior hepatic spine. Marking the lateral margin of the dorsal surface of the 

 carapace behind the superior hepatic spine is a row of four slightly smaller spines 

 on the branchial region, paralleling the linea anomurica, and decreasing in size 

 from before backward. There are sundry other tubercles rather regularly 

 arranged in more or less definite groups on the various regions of the carapace. 



Hairs covering chelipeds and legs longer than those on carapace; row of sharp, 

 hooked spines on upper margin of merus of all except the last pair of legs, the 

 largest of the series overhanging the articulation with the carpus at the superior 

 distal angle of the joint; a spine, similarly placed, occurs on the merus of the 

 last pair of legs; fingers of chelipeds one-third the entire length of the hand, 

 and dark colored. 



Abdomen also thickly pubescent, two basal segments, each armed with a sharp 

 median tubercle. 



Dimensions. — Type, female (Oat. No. 53331, U. S. N. M.) : length of carapace, 

 including rostrum 45 mm., of rostrum 5 mm., greatest width of carapace 36 mm., 

 length of last leg to distal extremity of propodus 66 mm., of next preceding leg 

 to distal extremity of merus 47 mm. 



Type Locality. — Off Point Loma, 67 to 73 fathoms ("Albatross" station 

 4309). 



Distribution. — Only known from off Point Loma, about southwest eight to ten 

 miles, 67 to 135 fathoms. 



BemarJcs. — This species is most closely related to Homola cuvieri (Risso) (see 

 Roux, Crust. Medit., p. 86, pi. vii, 1828, and Milne Edwards and Bouvier, Exped. 

 Sci. du Travailleur et Talisman, Crustaces decapodes, pt. 1, p. 10, 1910) of the 



