92 CRUSTACEA. 



spind crassd mediocri armatd aliisque tubercidis pai-vulis arnatd. 

 Pedes ant id longi, brachio trigono, margines spimiloso; carpo polygo- 

 nato, margines spinuloso ; manu subcarinatd, subtilissimd tomentosd. 



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

 third the greatest breadth of carapax ; anterior orbital acanthus 

 very slender, acute; superior orbital margin with a single small 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; postero-lateral 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 tornentose coat. 



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

 larged two diameters ; c, side view, enlarged four diameters ; d, 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 maxillipeds is broader than long. 



Chorilia lonyipes, DANA, Silliman's Ainer. Jour. Sci., 2d Ser., xi. 209. . 



GENUS LAHAINA, Dana. 



Choriliae quoad pedes antennasque externas celatas affinis. Carapax 

 elongatd ovatus, tumidus, parce armatus ; rostri cornubus elonyatis, 



