1854.] . 183 



caudals right angled triangular ; wings very short ; inguinal plate long and 

 narrow, not joining the axillary. 



Length 4.4, breadth 3.0, height 2.3, sternum length 4.2, tail 1.4. 



Shaw's figure and description referred to above are both very bad. 



K. integrum. Testa fusca, regulari-ovali, convexa, carinata, declivi, margine 

 postice dispanso, laterali perpendiculari, sterno magno bivalvi, cistam omnino 

 occludente, antice rotundato, postice paulo emarginato. Cauda brevissima 

 mutica. 



Habitat. Mexico. 



Head and neck brown spotted with yellow ; front pale brown, a large orange 

 spot behind the eye, somewhat varied with black. Jaws yellow, upper one very 

 slightly hooked. Chin with four small warts. Legs above dusky, beneath pale 

 brown ; fore legs with two folds on the upper side ; hind legs beneath squamose 

 with four folds. Tail very short, unarmed. Shell brown, regularly oval, very 

 convex and elevated, without any carina, very declivous on the sides and behind, 

 the lateral margin perpendicular, the posterior expanded. Vertebral plates im- 

 bricate ; the first triangular with the apex truncate, applied to the nuchal the 

 first marginal and half the second ; second, third, and fourth urceolate ; the 

 second and third hexagonal; the fourth four-sided, the anterior side one-third the 

 length of the base, which is rounded; the fifth triangular, the apex broadly trun- 

 cate, the base angled, and applied only to the last marginal. First lateral une- 

 qually four-sided, the base rounded, with four facets, second and third pentagonal, 

 fourth four-sided, the posterior basal angle deeply and roundly emarginate by 

 the penultimate marginal. Nuchal plate small, linear, all the other marginals 

 oblong and four-sided, those on the sides perpendicular, the four last on each 

 side wider and expanded, the penultimate one being higher than all the rest, and 

 rounded on the upper side. Sternum yellow, varied with dark brown, with nu- 

 merous diverging striae on the hinder plates, and concentric ones on the anterior, 

 rounded at both ends and a little emarginate behind ; bivalved, entirely closing 

 the box. Gular plate small, triangular, nearly equilateral ; pectorals irregularly 

 four-sided, the anterior face very short ; brachials four-sided, the interior side 

 half the length of the exterior ; abdominals exactly quadrate, wings short, axil- 

 lary scutum long and narrow, joining by a point to the inguinal, which is likewise 

 very long but much wider ; femorals four-sided, the interior side one-third the 

 length of the exterior ; caudals right angled triangular, with the base rounded. 



Length 4.6, breadth 3.0, height 1.7, tail 1.3, sternum length 3.0, breadth 2.0. 



Brought by Mr. Pease from Mexieo. 



K. leueostomum. Testa elliptica, convexa, postice subcarinata. Scutis ver- 

 tebralibus elongatis, primo ad nuchale, primum marginale et secundi partem 

 apposito, quinto ad marginale postremum solo apposito; margine medio subcom- 

 presso, postice dispanso. Sterno intes;ro medio paulo angustato, cistam paene 

 occludente. Cauda late et obtuse unguiculata, maxillis albidis superiore valde 

 hamata. 



Habitat. . A fine specimen in the collection of the Academy, received 



from the Jardin des Plantes of Paris. It is described under the name of leueosto- 

 mum by Dumeril, Cat. Reptil. Mus. I. des. 



Group II. Anterior valve of the sternum joined to the abdominal portion 

 partly by a ligament and partly by a suture, the posterior by suture alone ; wings 

 tolerably long, with a deep and wide groove on the anterior part. 



K. pe?insylvanic?im. Testa elliptica, convexa, dorso depressiuscula, postice 

 retusa ; margine angusto, minime dispanso. Scutis vertebralibus subimbricatis, 

 primoad nuchale et primum marginale apposito, quinto ad marginale postremum 

 solum apposito ; scuto marginali penultimo multo caeteris latiore et altiore. 

 Sterno testa angustiore, postice emarginato. Cauda acute unguiculata. 



Hab. From Canada to Florida. Has a musky odor. 



A young one of this species, about an inch long, had the shell perfectly round, 

 dark brown, with a yellow spot on each of the marginal scuta, scuta of the shell 

 a little roughened with transverse wrinkles and short elevated spots. Sternum 

 yellowish, black in the middle. Another one much younger and smaller was of 

 an oval form, with three very obscure and slightly developed carinae. 



16 



