CRUSTACEA. 



spina erased medmri annatd alnsqm tuberadis parvulis vrnatd 

 TL Lid longs hraeUo trigono, rmrgines spinuloto; carpo polyg* 



Not villous or pubescent. Trans-orbital breadth small hardly one- 

 third the greatest breadth of carapax; anterior orbital acan hus 

 very slender, acute; superior orbital margin with a smgle sural fis- 

 sure Beak long, pubescent, horns nearly straight and but slightly 

 divergent. Median region of carapax armed with four short spines 

 and a few others much smaller; cardiac region small, unarmed, but 

 bearing two to four small tubercles; posterolateral armed with a 

 strong spine, not long, along with some small tubercles. Anterior 

 feet long, arm trigonal, margins spinulous; carpus polygonal, mar- 

 gins spinulous; hand flattened, subcarinate, with a dense and very 

 short tomentose coat. 



Plate 1, fig. 5«, female, natural size; h, under view of head, en- 

 larged two diameters; C, side view, enlarged four diameters; tl, abdo- 

 men of female. 



Length of carapax, one inch and seven lines; greatest breadth, ten 

 lines; trans-orbital breadth, three and one-third lines; length of beak, 

 anterior to eyes, seven lines; length of anterior legs, one inch and six 

 lines; length of third pair of legs, two inches; length of second pair, 

 two inches and two and a half lines; length of posterior pair, one inch 

 and eight lines. 



The outer antennae with the flagellum extend very nearly to apex 

 of beak. There are a few short spinules at apex of peduncle of eye. 

 The pterygostomian region is denticulate. The female abdomen con- 

 sists of seven joints and is round-elliptical, the last joint the longest 

 The third joint of the outer maxiliipeds is broader than long. 



Chorilia lonyipcs, Dana, Sillimaii's Auier. Jour. Sci., 2d Ser.j si. 269, 



Genus LAHAINA, Dana. 



Chorilise quoad pedes antennasqiie extcrnas celatas qffinis. CurUjiax 

 elongate ovatus, tumidus, pane armatus; rostri oomubus elongatis, 



