tween chelipeds ; abdomen with six free segments, 

 last two fused, proximal fixed segment with a 

 prominent median spine. 



Chelipeds somewhat longer than carapace, 

 spinulose; ischium with distal spine; hand slightly 

 compressed ; fingers nearly as long as palm, gap- 

 ing nearly whole length, a large tooth in middle 

 of immovable finger. First pair of walking legs 

 more than twice length of second pair, posterior 

 pairs short. 



Female. Carapace narrower behind and wider 

 in front than male, tuberculation more uniform, 

 spines less frequent. First walking leg little 

 longer than second, approximately 1.5 times 

 length of carapace. Abdomen tuberculate or 

 granulate, with five free segments, last three fused. 



Measurements. — Carapace: male and female, 

 length, 7 mm. ; width, 6 mm. 



Variations.— Rathbun (1925) stated that this 

 species exhibits wide variations from the type. 

 Some specimens have the elevated regions sur- 

 mounted by a spine, some have an abdominal 

 spine, others even lack tubercles on the elevated 

 regions. 



Habitat. — The species has been reported from 

 mud, sand of various grades, and broken-coral 

 and shell bottoms ; shore to 75 fathoms. 



Type locality.— South of Tortugas, [Fla.], lat. 

 24°36'40" N. long. 80°02'20" W., 16 fathoms. 



Known range. — Cape Hatteras, N.C., to south- 

 ern and western Florida; West Indies to Rio de 

 Janeiro, Brazil. Ovigerous females are known 

 from Tortugas in June (U.S. National Museum 

 records) . 



Genus Collodes Stimpson, 1860 



Rathbun, 1925, p. 105. 

 Collodes trispinosus Stimpson 



Figures 215, 223D 



Collodes trispinosus Stimpson, 1871a, p. 120. — Rathbun, 1925, 

 p. 107, text-figs. 32a, b; pi. 36, figs. 5-6 (rev.). 



Recognition characters. — Carapace ovate-tri- 

 angular, covered with coarse granules except on 

 front, anterior portion of gastric region, and 

 about bases of spines; a single, slender, erect, 

 capitate spine on gastric and cardiac regions, and 

 on first abdominal segment. Rostrum short, with 

 two minute and usually well-separated horns. 

 Eyes of moderate length, partially retractile; 

 postorbital tooth slender, a granule on upper 



Figure 215. — Collodes trispinosus Stimpson. Male in 

 dorsal view, legs of left side not shown, 5 mm. 

 indicated. 



orbital border. Antenna with first movable article 

 approximately as long as rostral horns; basal 

 article of antenna twisted, with four or five 

 spinules on outer border and with a laminate 

 crest on inner margin ending in a large tooth; 

 interantennular spine short. Merus of outer 

 maxilliped obcordate, deeply cut on distal margin, 

 strongly produced at inner and outer angles. 



Chelipeds of male moderately stout, palm thick, 

 smooth outside; surface of carpus and margins of 

 merus and palm spinulose ; fingers widely gaping, 

 with a triangular tooth near middle of immovable 

 finger and a low molariform tooth near base of 

 dactyl. Walking legs long ; first two pairs varia- 

 bly subequal ; third and fourth pairs successively 

 shorter ; dactyls as long as propodi. 



Measurements. — Carapace: male, length, 14 

 mm., width, 12 mm.; female, length, 12 mm., 

 width, 10 mm. 



Habitat,— Rathbun (1925) reported this species 

 from gray sands of varying coarseness, broken 

 shell, and gravel bottoms; 4 to 82 fathoms. 



Type localities. — Off the Quicksands, Carysfort 

 Reef, and French Reef, [Fla.], 34 to 50 fathoms. 



Known range. — Near Cape Hatteras, N.C., to 

 south and west Florida near Apalachicola. 



Remarks.— Rathbun (1925) reported ovigerous 

 females from North Carolina in October, and 

 they are known from Florida in July (U.S. Na- 

 tional Museum records). 



MARINE DECAPOD CRUSTACEANS OF THE CAROLINAS 



239 



