1921] Schmitt: The Marine Decapod Crustacea of California 183 



Family Dromiidae 



Carapace subglobular, rarely flattened; no lineae anomuricae (a pair of longi- 

 tudinal suture lines on the earapaee) ; sternum of female traversed for more or 

 less of its extent by two obliquely longitudinal grooves. Eyes and antennules 

 almost always retractile into common orbito-antennulary pits. External maxilli- 

 peds generally opereuliform. Legs of moderate size, fourth and fifth pairs short, 

 subdorsal in position, and furnished with a small, hook-like nail. Sixth segment 

 of abdomen generally with rudimentary uropods. 



Genus Dromidia Stimpson 



Carapace convex and pilose, the hair being often of considerable length; front 

 narrow, hepatic regions more or less concave, or excavated anteriorly. Sternal 

 sulci in the female approximated at their extremities in either a single or more 

 or less bifurcated tuberculiform projection, situated between the bases of the 

 ehelipeds. 



Dromidia larraburei Kathbun 



Plate 33, figure 1 



Dromidia sarraburei Eathbun, Proc. U. S. Nat. Mus., 38, 553, pi. 48, fig. 4, 

 1910 (error for larraburei; named for Senor Don Carlos Larrabure y 

 Correa). 

 Dromidia segnipes Weymouth, Stanford Univ. Publ., Univ. Ser., no. 4, p. 15, 

 pi. 1, figs. 1-2, 1910. 

 Characters. — Densely covered with fur except ends of fingers and dactyli. 

 Carapace high, subglobular; anterolateral margins directed toward the buccal 

 angles and armed with four to six small teeth or tubercles; from the last tooth 

 an oblique furrow runs across the branchial region; front vertical, tridentate. 

 Chelipeds short, stout, equal; fingers deeply channeled inside, gaping at base. 

 First and second pairs of ambulatory legs broad, dactyli with curved horny tip 

 and a row of spines beneath; third and fourth pairs narrower, subdorsal, and 

 prehensile, fourth shorter, dactyli strongly curved, fifth recurved, both folding 

 against a spinous process on the propodus. 



Dimensions. — Type, ovigerous female: length of carapace 28.2 mm., width 

 30 mm. Of specimens taken in Monterey Bay, by "Weymouth, male: length of 

 carapace 15 mm., width 15.7 mm., length of antennal flagellum 11 mm.; female: 

 length of earapaee 15.7 mm., width 16.3 mm., length of antennal flagellum 10 mm. 

 Color. — In alcohol yellowish tan, tips of chelipeds flesh color; color in life 

 similar (Weymouth). 



Type locality. — Bay of Sechura, west of Matacaballa, Peru, depth about 

 5 fathoms. 



Distribution. — Also from Monterey Bay and Long Beach, California, Magda- 

 lena Bay, Lower California, and the Galapagos Islands, shallow water. 



Family Homolidae 



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

 lineae anomuricae (a pair of longitudinal suture lines on the carapace) usually 

 present; sternum of female not longitudinally grooved. Eyes not retractile into 

 orbits nor antennules into pits. External maxillipeds pediform or subpediform. 

 Legs long and slender, only fifth pair dorsal and reduced in size. Uropods wholly 

 absent. 



